Search Results

Search found 10911 results on 437 pages for 'dynamically loaded xap'.

Page 419/437 | < Previous Page | 415 416 417 418 419 420 421 422 423 424 425 426  | Next Page >

• OpenVPN (HideMyAss) client on Ubuntu: Route only HTTP traffic

  - by Andersmith

  I want to use HideMyAss VPN (hidemyass.com) on Ubuntu Linux to route only HTTP (ports 80 & 443) traffic to the HideMyAss VPN server, and leave all the other traffic (MySQL, SSH, etc.) alone. I'm running Ubuntu on AWS EC2 instances. The problem is that when I try and run the default HMA script, I suddenly can't SSH into the Ubuntu instance anymore and have to reboot it from the AWS console. I suspect the Ubuntu instance will also have trouble connecting to the RDS MySQL database, but haven't confirmed it. HMA uses OpenVPN like this: sudo openvpn client.cfg The client configuration file (client.cfg) looks like this: ############################################## # Sample client-side OpenVPN 2.0 config file # # for connecting to multi-client server. # # # # This configuration can be used by multiple # # clients, however each client should have # # its own cert and key files. # # # # On Windows, you might want to rename this # # file so it has a .ovpn extension # ############################################## # Specify that we are a client and that we # will be pulling certain config file directives # from the server. client auth-user-pass #management-query-passwords #management-hold # Disable management port for debugging port issues #management 127.0.0.1 13010 ping 5 ping-exit 30 # Use the same setting as you are using on # the server. # On most systems, the VPN will not function # unless you partially or fully disable # the firewall for the TUN/TAP interface. #;dev tap dev tun # Windows needs the TAP-Win32 adapter name # from the Network Connections panel # if you have more than one. On XP SP2, # you may need to disable the firewall # for the TAP adapter. ;dev-node MyTap # Are we connecting to a TCP or # UDP server? Use the same setting as # on the server. proto tcp ;proto udp # The hostname/IP and port of the server. # You can have multiple remote entries # to load balance between the servers. # All VPN Servers are added at the very end ;remote my-server-2 1194 # Choose a random host from the remote # list for load-balancing. Otherwise # try hosts in the order specified. # We order the hosts according to number of connections. # So no need to randomize the list # remote-random # Keep trying indefinitely to resolve the # host name of the OpenVPN server. Very useful # on machines which are not permanently connected # to the internet such as laptops. resolv-retry infinite # Most clients don't need to bind to # a specific local port number. nobind # Downgrade privileges after initialization (non-Windows only) ;user nobody ;group nobody # Try to preserve some state across restarts. persist-key persist-tun # If you are connecting through an # HTTP proxy to reach the actual OpenVPN # server, put the proxy server/IP and # port number here. See the man page # if your proxy server requires # authentication. ;http-proxy-retry # retry on connection failures ;http-proxy [proxy server] [proxy port #] # Wireless networks often produce a lot # of duplicate packets. Set this flag # to silence duplicate packet warnings. ;mute-replay-warnings # SSL/TLS parms. # See the server config file for more # description. It's best to use # a separate .crt/.key file pair # for each client. A single ca # file can be used for all clients. ca ./keys/ca.crt cert ./keys/hmauser.crt key ./keys/hmauser.key # Verify server certificate by checking # that the certicate has the nsCertType # field set to "server". This is an # important precaution to protect against # a potential attack discussed here: # http://openvpn.net/howto.html#mitm # # To use this feature, you will need to generate # your server certificates with the nsCertType # field set to "server". The build-key-server # script in the easy-rsa folder will do this. ;ns-cert-type server # If a tls-auth key is used on the server # then every client must also have the key. ;tls-auth ta.key 1 # Select a cryptographic cipher. # If the cipher option is used on the server # then you must also specify it here. ;cipher x # Enable compression on the VPN link. # Don't enable this unless it is also # enabled in the server config file. #comp-lzo # Set log file verbosity. verb 3 # Silence repeating messages ;mute 20 # Detect proxy auto matically #auto-proxy # Need this for Vista connection issue route-metric 1 # Get rid of the cached password warning #auth-nocache #show-net-up #dhcp-renew #dhcp-release #route-delay 0 120 # added to prevent MITM attack ns-cert-type server # # Remote servers added dynamically by the master server # DO NOT CHANGE below this line # remote-random remote 173.242.116.200 443 # 0 remote 38.121.77.74 443 # 0 # etc... remote 67.23.177.5 443 # 0 remote 46.19.136.130 443 # 0 remote 173.254.207.2 443 # 0 # END

  Read the article

• What's a clean way to have the server return a JavaScript function which would then be invoked?

  - by Khnle

  My application is architected as a host of plug-ins that have not yet been written. There's a long reason for this, but with each new year, the business logic will be different and we don't know what it will be like (Think of TurboTax if that helps). The plug-ins consist of both server and client components. The server components deals with business logic and persisting the data into database tables which will be created at a later time as well. The JavaScript manipulates the DOM for the browsers to render afterward. Each plugin lives in a separate assembly, so that they won't disturb the main application, i.e., we don't want to recompile the main application. Long story short, I am looking for a way to return JavaScript functions to the client from an Ajax get request, and execute these JavaScript functions (which are just returned). Invoking a function in Javascript is easy. The hard part is how to organize or structure so that I won't have to deal with maintenance problem. So concat using StringBuilder to end up with JavaScript code as a result of calling toString() from the string builder object is out of the question. I want to have no difference between writing JavaScript codes normally and writing Javascript codes for this dynamic purpose. An alternative is to manipulate the DOM on the server side, but I doubt that it would be as elegantly as using jQuery on the client side. I am open for a C# library that supports chainable calls like jQuery that also manipulates the DOM too. Do you have any idea or is it too much to ask or are you too confused? Edit1: The point is to avoid recompiling, hence the plug-ins architecture. In some other parts of the program, I already use the concept of dynamically loading Javascript files. That works fine. What I am looking here is somewhere in the middle of the program when an Ajax request is sent to the server. Edit 2: To illustrate my question: Normally, you would see the following code. An Ajax request is sent to the server, a JSON result is returned to the client which then uses jQuery to manipulate the DOM (creating tag and adding to the container in this case). $.ajax({ type: 'get', url: someUrl, data: {'': ''}, success: function(data) { var ul = $('<ul>').appendTo(container); var decoded = $.parseJSON(data); $.each(decoded, function(i, e) { var li = $('<li>').text(e.FIELD1 + ',' + e.FIELD2 + ',' + e.FIELD3); ul.append(li); }); } }); The above is extremely simple. But next year, what the server returns is totally different and how the data to be rendered would also be different. In a way, this is what I want: var container = $('#some-existing-element-on-the-page'); $.ajax({ type: 'get', url: someUrl, data: {'': ''}, success: function(data) { var decoded = $.parseJSON(data); var fx = decoded.fx; var data = decode.data; //fx is the dynamic function that create the DOM from the data and append to the existing container fx(container, data); } }); I don't need to know, at this time what data would be like, but in the future I will, and I can then write fx accordingly.

  Read the article

• Iphone: controlling text with delay problem with UIWebView

  - by James B.

  Hi, I've opted to use UIWebView so I can control the layout of text I've got contained in a local html document in my bundle. I want the text to display within a UIWebView I've got contained within my view. So the text isn't the whole view, just part of it. Everything runs fine, but when the web page loads I get a blank screen for a second before the text appears. This looks really bad. can anyone give me an example of how to stop this happening? I'm assuming I have to somehow hide the web view until it has fully loaded? Could someone one tell me how to do this? At the moment I'm calling my code through the viewDidLoad like this: [myUIWebView loadRequest: [NSURLRequest requestWithURL:[NSURL fileURLWithPath:[[NSBundle mainBundle]pathForResource:@"localwebpage" ofType:@"html"] isDirectory:NO]]]; Any help is much appreciated. I've read round a few forums and not seen a good answer to this question, and it seems like it recurs a lot as an issue for beginners like myself. Thanks for taking the time to read this post! UPDATED info Thanks for your response. The suggestions below solves the problem but creates a new one for me as now when my view loads it is totally hidden until I click on my toggle switch. to understand this it's maybe most helpful if I post all my code. Before this though let me explain the setup of my view. I've got a standard view within which I've also got two web views, one on top of the other. each web view contains different text with different styling. the user flicks between views using a toggle switch, which hides/reveals the web views. I'm using the web views because I want to control the style/layout of the text. Below is my full .m code, I can't figure out where it's going wrong. My web views are called oxford & harvard I'm sure its something to do with how/when I'm hiding/revealing views. I've played around with this but can't seem to get it right. Maybe my approach is wrong. A bit of advice ironing this out would be really appreciated: @implementation ReferenceViewController @synthesize oxford; @synthesize harvard; // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { [super viewDidLoad]; [oxford loadRequest: [NSURLRequest requestWithURL:[NSURL fileURLWithPath:[[NSBundle mainBundle]pathForResource:@"Oxford" ofType:@"html"] isDirectory:NO]]]; [harvard loadRequest: [NSURLRequest requestWithURL:[NSURL fileURLWithPath:[[NSBundle mainBundle]pathForResource:@"Harvard" ofType:@"html"] isDirectory:NO]]]; [oxford setHidden:YES]; [harvard setHidden:YES]; } - (void)webViewDidFinishLoad:(UIWebView *)webView { if([webView hidden]) { [oxford setHidden:NO]; [harvard setHidden:NO]; } } //Toggle controls for toggle switch in UIView to swap between webviews - (IBAction)toggleControls:(id)sender { if ([sender selectedSegmentIndex] == kSwitchesSegmentIndex) { oxford.hidden = NO; harvard.hidden = YES; } else { oxford.hidden = YES; harvard.hidden = NO; } } - (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Release any cached data, images, etc that aren't in use. } - (void)viewDidUnload { [super viewDidUnload]; // Release any retained subviews of the main view. // e.g. self.myOutlet = nil; } - (void)dealloc { [super dealloc]; [oxford release]; [harvard release]; } @end

  Read the article

• Sporadic unspecific kernel panic

  - by koma

  I'm experiencing seldom (so far about once a month) hard crashes on our ubuntu server 10.04 LTS box. The box itself is quite old (Dell PowerEdge 750 from 2004, Pentium4 2.8 GHz). I set up netconsole after it crashed twice last thursday and was able to extract the following output: [ 9354.062473] invalid opcode: 0000 [#1] SMP [ 9354.062516] last sysfs file: /sys/devices/pci0000:00/0000:00:1d.0/usb2/2-2/2-2:1.0/uevent [ 9354.062555] Modules linked in: ppdev adm1026 hwmon_vid i2c_i801 bridge stp dcdbas psmouse serio_raw netconsole configfs shpchp lp parport usbhid hid e1000 [ 9354.062685] [ 9354.062704] Pid: 3988, comm: rsync Not tainted 2.6.38-12-generic-pae #51~lucid1-Ubuntu Dell Computer Corporation PowerEdge 750 /0R1479 [ 9354.062773] EIP: 0060:[<c104fef1>] EFLAGS: 00010046 CPU: 1 [ 9354.062802] EIP is at check_preempt_wakeup+0x181/0x250 [ 9354.062826] EAX: 00000002 EBX: f2a10ccc ECX: 00000000 EDX: 00000002 [ 9354.062850] ESI: f1db71cc EDI: f1db71a0 EBP: f1dbdea8 ESP: f1dbde8c [ 9354.062875] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 [ 9354.062900] Process rsync (pid: 3988, ti=f1dbc000 task=f1db71a0 task.ti=f1dbc000) [ 9354.062933] Stack: [ 9354.062951] 0053ea60 f7907680 f28da840 f2a10ca0 c153ea60 f7907680 c153ea60 f1dbdebc [ 9354.063019] c103f98a f2a10ca0 f7907680 00000001 f1dbdef8 c104f97f 00000000 f2f0bacc [ 9354.063088] f7904338 00000001 00000003 00000000 f2f0bacc 00000001 00000001 00000086 [ 9354.063157] Call Trace: [ 9354.063183] [<c103f98a>] check_preempt_curr+0x6a/0x80 [ 9354.063210] [<c104f97f>] try_to_wake_up+0x5f/0x3f0 [ 9354.063236] [<c1077a00>] ? hrtimer_wakeup+0x0/0x30 [ 9354.063261] [<c104fd64>] wake_up_process+0x14/0x20 [ 9354.063286] [<c1077a1d>] hrtimer_wakeup+0x1d/0x30 [ 9354.063310] [<c1077f4a>] __run_hrtimer+0x7a/0x1c0 [ 9354.063336] [<c107dbad>] ? ktime_get+0x6d/0x110 [ 9354.063360] [<c1078310>] hrtimer_interrupt+0x120/0x2b0 [ 9354.063390] [<c1535c36>] smp_apic_timer_interrupt+0x56/0x8a [ 9354.063418] [<c152f459>] apic_timer_interrupt+0x31/0x38 [ 9354.063446] [<c1520000>] ? mca_attach_bus+0x5/0xc0 [ 9354.063469] Code: 8b 9b 20 01 00 00 8b 86 24 01 00 00 3b 83 24 01 00 00 75 e6 85 db 0f 84 a3 00 00 00 89 da 89 f0 e8 75 f6 fe ff 83 f8 01 0f 85 00 <fe> ff ff 89 f8 e8 95 f9 fe ff 8b 5e 1c 85 db 0f 84 e4 fe ff ff [ 9354.063804] EIP: [<c104fef1>] check_preempt_wakeup+0x181/0x250 SS:ESP 0068:f1dbde8c [ 9354.064231] ---[ end trace 290689cea65aea7f ]--- [ 9354.064290] Kernel panic - not syncing: Fatal exception in interrupt [ 9354.064352] Pid: 3988, comm: rsync Tainted: G D 2.6.38-12-generic-pae #51~lucid1-Ubuntu [ 9354.064424] Call Trace: [ 9354.064481] [<c152c057>] ? panic+0x5c/0x15b [ 9354.064539] [<c15302bd>] ? oops_end+0xcd/0xd0 [ 9354.064539] [<c100d9e4>] ? die+0x54/0x80 [ 9354.064539] [<c152f926>] ? do_trap+0x96/0xc0 [ 9354.064539] [<c100ba00>] ? do_invalid_op+0x0/0xa0 [ 9354.064539] [<c100ba8b>] ? do_invalid_op+0x8b/0xa0 [ 9354.064539] [<c104fef1>] ? check_preempt_wakeup+0x181/0x250 [ 9354.064539] [<c144884d>] ? __kfree_skb+0x3d/0x90 [ 9354.064539] [<c1042ae7>] ? update_curr+0x247/0x2a0 [ 9354.064539] [<c10447bb>] ? update_cfs_load+0x11b/0x2d0 [ 9354.064539] [<c1042a25>] ? update_curr+0x185/0x2a0 [ 9354.064539] [<c152f6bf>] ? error_code+0x67/0x6c [ 9354.064539] [<c104fef1>] ? check_preempt_wakeup+0x181/0x250 [ 9354.064539] [<c103f98a>] ? check_preempt_curr+0x6a/0x80 [ 9354.064539] [<c104f97f>] ? try_to_wake_up+0x5f/0x3f0 [ 9354.064539] [<c1077a00>] ? hrtimer_wakeup+0x0/0x30 [ 9354.064539] [<c104fd64>] ? wake_up_process+0x14/0x20 [ 9354.064539] [<c1077a1d>] ? hrtimer_wakeup+0x1d/0x30 [ 9354.064539] [<c1077f4a>] ? __run_hrtimer+0x7a/0x1c0 [ 9354.064539] [<c107dbad>] ? ktime_get+0x6d/0x110 [ 9354.064539] [<c1078310>] ? hrtimer_interrupt+0x120/0x2b0 [ 9354.064539] [<c1535c36>] ? smp_apic_timer_interrupt+0x56/0x8a [ 9354.064539] [<c152f459>] ? apic_timer_interrupt+0x31/0x38 [ 9354.064539] [<c1520000>] ? mca_attach_bus+0x5/0xc0 Googling for this issue didn't really turn up anything useful (most stuff I found was related to btrfs, but I don't use that, although the module exists and is sometimes loaded). From experience it might have to do with relatively heavy I/O, as two of the panics happened during a backup procedure. Kernel is 2.6.38-12-generic-pae, but I'm pretty sure I also saw panics on 2.6.32. I meanwhile upgraded to 3.0.0-17-generic-pae and am waiting for the next crash ;-) I'm at a loss here, so any pointers where to look for the cause or what it could be would be great :-) Thanks !

  Read the article

• Help in building an 16 bit os

  - by Barshan Das

  I am trying to build an old 16 bit dos like os. My bootloader code: ; This is not my code. May be of Fritzos. I forgot the source. ORG 7c00h jmp Start drive db 0 msg db " Loader Initialization",0 msg2 db "ACos Loaded",0 print: lodsb cmp al, 0 je end mov ah, 0Eh int 10h jmp print end: ret Start: mov [ drive ], dl ; Get the floppy OS booted from ; Update the segment registers xor ax, ax ; XOR ax mov ds, ax ; Mov AX into DS mov si,msg call print ; Load Kernel. ResetFloppy: mov ax, 0x00 ; Select Floppy Reset BIOS Function mov dl, [ drive ] ; Select the floppy ADos booted from int 13h ; Reset the floppy drive jc ResetFloppy ; If there was a error, try again. ReadFloppy: mov bx, 0x9000 ; Load kernel at 9000h. mov ah, 0x02 ; Load disk data to ES:BX mov al, 17 ; Load two floppy head full's worth of data. mov ch, 0 ; First Cylinder mov cl, 2 ; Start at the 2nd Sector to load the Kernel mov dh, 0 ; Use first floppy head mov dl, [ drive ] ; Load from the drive kernel booted from. int 13h ; Read the floppy disk. jc ReadFloppy ; Error, try again. ; Clear text mode screen mov ax, 3 int 10h ;print starting message mov si,msg2 call print mov ax, 0x0 mov ss, ax mov sp, 0xFFFF jmp 9000h ; This part makes sure the bootsector is 512 bytes. times 510-($-$$) db 0 ;bootable sector signature dw 0xAA55 My example kernel code: asm(".code16\n"); void putchar(char); int main() { putchar('A'); return 0; } void putchar(char val) { asm("movb %0, %%al\n" "movb $0x0E, %%ah\n" "int $0x10\n" : :"r"(val) ) ; } This is how I compile it : nasm -f bin -o ./bin/boot.bin ./source/boot.asm gcc -nostdinc -fno-builtin -I./include -c -o ./bin/kernel.o ./source/kernel.c ld -Ttext=0x9000 -o ./bin/kernel.bin ./bin/kernel.o -e 0x0 dd if=/dev/zero of=./bin/empty.bin bs=1440K count=1 cat ./bin/boot.bin ./bin/kernel.bin ./bin/empty.bin|head -c 1440K > ./bin/os rm ./bin/empty.bin and I run it in virtual machine. When I make the putchar function ( in kernel code ) for constant value ....i.e like this: void putchar() { char val = 'A'; asm("movb %0, %%al\n" "movb $0x0E, %%ah\n" "int $0x10\n" : :"r"(val) ) ; } then it works fine. But when I pass argument to it ( That is in the previous code ) , then it prints a space for any character. What should I do?

  Read the article

• OpenGL texture misaligned on quad

  - by user308226

  I've been having trouble with this for a while now, and I haven't gotten any solutions that work yet. Here is the problem, and the specifics: I am loading a 256x256 uncompressed TGA into a simple OpenGL program that draws a quad on the screen, but when it shows up, it is shifted about two pixels to the left, with the cropped part appearing on the right side. It has been baffling me for the longest time, people have suggested clamping and such, but somehow I think my problem is probably something really simple, but I just can't figure out what it is! Here is a screenshot comparing the TGA (left) and how it appears running in the program (right) for clarity. Also take note that there's a tiny black pixel on the upper right corner, I'm hoping that's related to the same problem. Here's the code for the loader, I'm convinced that my problem lies in the way that I'm loading the texture. Thanks in advance to anyone who can fix my problem. bool TGA::LoadUncompressedTGA(char *filename,ifstream &texturestream) { cout << "G position status:" << texturestream.tellg() << endl; texturestream.read((char*)header, sizeof(header)); //read 6 bytes into the file to get the tga header width = (GLuint)header[1] * 256 + (GLuint)header[0]; //read and calculate width and save height = (GLuint)header[3] * 256 + (GLuint)header[2]; //read and calculate height and save bpp = (GLuint)header[4]; //read bpp and save cout << bpp << endl; if((width <= 0) || (height <= 0) || ((bpp != 24) && (bpp !=32))) //check to make sure the height, width, and bpp are valid { return false; } if(bpp == 24) { type = GL_RGB; } else { type = GL_RGBA; } imagesize = ((bpp/8) * width * height); //determine size in bytes of the image cout << imagesize << endl; imagedata = new GLubyte[imagesize]; //allocate memory for our imagedata variable texturestream.read((char*)imagedata,imagesize); //read according the the size of the image and save into imagedata for(GLuint cswap = 0; cswap < (GLuint)imagesize; cswap += (bpp/8)) //loop through and reverse the tga's BGR format to RGB { imagedata[cswap] ^= imagedata[cswap+2] ^= //1st Byte XOR 3rd Byte XOR 1st Byte XOR 3rd Byte imagedata[cswap] ^= imagedata[cswap+2]; } texturestream.close(); //close ifstream because we're done with it cout << "image loaded" << endl; glGenTextures(1, &texID); // Generate OpenGL texture IDs glBindTexture(GL_TEXTURE_2D, texID); glPixelStorei(GL_UNPACK_ALIGNMENT, 1); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); glTexImage2D(GL_TEXTURE_2D, 0, type, width, height, 0, type, GL_UNSIGNED_BYTE, imagedata); delete imagedata; return true; } //Public loading function for TGA images. Opens TGA file and determines //its type, if any, then loads it and calls the appropriate function. //Returns: TRUE on success, FALSE on failure bool TGA::loadTGA(char *filename) { cout << width << endl; ifstream texturestream; texturestream.open(filename,ios::binary); texturestream.read((char*)header,sizeof(header)); //read 6 bytes into the file, its the header. //if it matches the uncompressed header's first 6 bytes, load it as uncompressed LoadUncompressedTGA(filename,texturestream); return true; }

  Read the article

• hello-1.mod.c:14: warning: missing initializer (near initialization for '__this_module.arch.unw_sec_init')

  - by Sompom

  I am trying to write a module for an sbc1651. Since the device is ARM, this requires a cross-compile. As a start, I am trying to compile the "Hello Kernel" module found here. This compiles fine on my x86 development system, but when I try to cross-compile I get the below error. /home/developer/HelloKernel/hello-1.mod.c:14: warning: missing initializer /home/developer/HelloKernel/hello-1.mod.c:14: warning: (near initialization for '__this_module.arch.unw_sec_init') Since this is in the .mod.c file, which is autogenerated I have no idea what's going on. The mod.c file seems to be generated by the module.h file. As far as I can tell, the relevant parts are the same between my x86 system's module.h and the arm kernel header's module.h. Adding to my confusion, this problem is either not googleable (by me...) or hasn't happened to anyone before. Or I'm just doing something clueless that anyone with any sense wouldn't do. The cross-compiler I'm using was supplied by Freescale (I think). I suppose it could be a problem with the compiler. Would it be worth trying to build the toolchain myself? Obviously, since this is a warning, I could ignore it, but since it's so strange, I am worried about it, and would like to at least know the cause... Thanks very much, Sompom Here are the source files hello-1.mod.c #include <linux/module.h> #include <linux/vermagic.h> #include <linux/compiler.h> MODULE_INFO(vermagic, VERMAGIC_STRING); struct module __this_module __attribute__((section(".gnu.linkonce.this_module"))) = { .name = KBUILD_MODNAME, .init = init_module, #ifdef CONFIG_MODULE_UNLOAD .exit = cleanup_module, #endif .arch = MODULE_ARCH_INIT, }; static const struct modversion_info ____versions[] __used __attribute__((section("__versions"))) = { { 0x3972220f, "module_layout" }, { 0xefd6cf06, "__aeabi_unwind_cpp_pr0" }, { 0xea147363, "printk" }, }; static const char __module_depends[] __used __attribute__((section(".modinfo"))) = "depends="; hello-1.c (modified slightly from the given link) /* hello-1.c - The simplest kernel module. * * Copyright (C) 2001 by Peter Jay Salzman * * 08/02/2006 - Updated by Rodrigo Rubira Branco <[email protected]> */ /* Kernel Programming */ #ifndef MODULE #define MODULE #endif #ifndef LINUX #define LINUX #endif #ifndef __KERNEL__ #define __KERNEL__ #endif #include <linux/module.h> /* Needed by all modules */ #include <linux/kernel.h> /* Needed for KERN_ALERT */ static int hello_init_module(void) { printk(KERN_ALERT "Hello world 1.\n"); /* A non 0 return means init_module failed; module can't be loaded.*/ return 0; } static void hello_cleanup_module(void) { printk(KERN_ALERT "Goodbye world 1.\n"); } module_init(hello_init_module); module_exit(hello_cleanup_module); MODULE_LICENSE("GPL"); Makefile export ARCH:=arm export CCPREFIX:=/opt/freescale/usr/local/gcc-4.4.4-glibc-2.11.1-multilib-1.0/arm-fsl-linux-gnueabi/bin/arm-linux- export CROSS_COMPILE:=${CCPREFIX} TARGET := hello-1 WARN := -W -Wall -Wstrict-prototypes -Wmissing-prototypes -Wno-sign-compare -Wno-unused -Werror UNUSED_FLAGS := -std=c99 -pedantic EXTRA_CFLAGS := -O2 -DMODULE -D__KERNEL__ ${WARN} ${INCLUDE} KDIR ?= /home/developer/src/ltib-microsys/ltib/rpm/BUILD/linux-2.6.35.3 ifneq ($(KERNELRELEASE),) # kbuild part of makefile obj-m := $(TARGET).o else # normal makefile default: clean $(MAKE) -C $(KDIR) M=$$PWD .PHONY: clean clean: -rm built-in.o -rm $(TARGET).ko -rm $(TARGET).ko.unsigned -rm $(TARGET).mod.c -rm $(TARGET).mod.o -rm $(TARGET).o -rm modules.order -rm Module.symvers endif

  Read the article

• Output a php multi-dimensional array to a html table

  - by Fireflight

  I have been banging my head against the wall with this one for nearly a week now, and am no closer than I was the first day. I have a form that has 8 columns and a variable number of rows which I need to email to the client in a nicely formatted email. The form submits the needed fields as a multidimensional array. Rough example is below: <input name="order[0][topdiameter]" type="text" id="topdiameter0" value="1" size="5" /> <input name="order[0][bottomdiameter]" type="text" id="bottomdiameter0" value="1" size="5" /> <input name="order[0][slantheight]" type="text" id="slantheight0" value="1" size="5" /> <select name="order[0][fittertype]" id="fittertype0"> <option value="harp">Harp</option> <option value="euro">Euro</option> <option value="bulbclip">Regular</option> </select> <input name="order[0][washerdrop]" type="text" id="washerdrop0" value="1" size="5" /> <select name="order[0][fabrictype]" id="fabrictype"> <option value="linen">Linen</option> <option value="pleated">Pleated</option> </select> <select name="order[0][colours]" id="colours0"> <option value="beige">Beige</option> <option value="white">White</option> <option value="eggshell">Eggshell</option> <option value="parchment">Parchment</option> </select> <input name="order[0][quantity]" type="text" id="quantity0" value="1" size="5" /> This form is formatted in a table, and rows can be added to it dynamically. What I've been unable to do is get a properly formatted table out of the array. This is what I'm using now (grabbed from the net). <?php if (isset($_POST["submit"])) { $arr= $_POST['order'] echo '<table>'; foreach($arr as $arrs) { echo '<tr>'; foreach($arrs as $item) { echo "<td>$item</td>"; } echo '</tr>'; } echo '</table>; }; ?> This works perfectly for a single row of data. If I try submitting 2 or more rows from the form then one of the columns disappears. I'd like the table to be formatted as: | top | Bottom | Slant | Fitter | Washer | Fabric | Colours | Quantity | ------------------------------------------------------------------------ |value| value | value | value | value | value | value | value | with additional rows as needed. But, I can't find any examples that will generate that type of table! It seems like this should be something fairly straightforward, but I just can't locate an example that works the way I need it too.

  Read the article

• Loading multiple copies of a group of DLLs in the same process

  - by george

  Background I'm maintaining a plugin for an application. I'm Using Visual C++ 2003. The plugin is composed of several DLLs - there's the main DLL, that's the one that the application loads using LoadLibrary, and there are several utility DLLs that are used by the main DLL and by each other. Dependencies generally look like this: plugin.dll - utilA.dll, utilB.dll utilA.dll - utilB.dll utilB.dll - utilA.dll, utilC.dll You get the picture. Some of the dependencies between the DLLs are load-time and some run-time. All the DLL files are stored in the executable's directory (not a requirement, just how it works now). The problem There's a new requirement - running multiple instances of the plugin within the application. The application runs each instance of a plugin in its own thread, i.e. each thread calls The plugin's code, however, is nothing but thread-safe - lots of global variables etc.. Unfortunately, fixing the whole thing isn't currently an option, so I need a way to load multiple (at most 3) copies of the plugin's DLLs in the same process. Option 1: The distinct names approach Creating 3 copies of each DLL file, so that each file has a distinct name. e.g. plugin1.dll, plugin2.dll, plugin3.dll, utilA1.dll, utilA2.dll, utilA3.dll, utilB1.dll, etc.. The application will load plugin1.dll, plugin2.dll and plugin3.dll. The files will be in the executable's directory. For each group of DLLs to know each other by name (so the inter-dependencies work), the names need to be known at compilation time - meaning the DLLs need to be compiled multiple times, only each time with different output file names. Not very complicated, but I'd hate having 3 copies of the VS project files, and don't like having to compile the same files over and over. Option 2: The side-by-side assemblies approach Creating 3 copies of the DLL files, each group in its own directory, and defining each group as an assembly by putting an assembly manifest file in the directory, listing the plugin's DLLs. Each DLL will have an application manifest pointing to the assembly, so that the loader finds the copies of the utility DLLs that reside in the same directory. The manifest needs to be embedded for it to be found when a DLL is loaded using LoadLibrary. I'll use mt.exe from a later VS version for the job, since VS2003 has no built-in manifest embedding support. I've tried this approach with partial success - dependencies are found during load-time of the DLLs, but not when a DLL function is called that loads another DLL. This seems to be the expected behavior according to this article - A DLL's activation context is only used at the DLL's load-time, and afterwards it's deactivated and the process's activation context is used. I haven't yet tried working around this using ISOLATION_AWARE_ENABLED. Questions Got any other options? Any quick & dirty solution will do. :-) Will ISOLATION_AWARE_ENABLED even work with VS2003? Comments will be greatly appreciated. Thanks!

  Read the article

• How do you send a named pipe string from umnanaged to managed code space?

  - by billmcf

  I appear to have a named pipes 101 issue. I have a very simple set up to connect a simplex named pipe transmitting from a C++ unmanaged app to a C# managed app. The pipe connects, but I cannot send a "message" through the pipe unless I close the handle which appears to flush the buffer and pass the message through. It's like the message is blocked. I have tried reversing the roles of client/server and invoking them with different Flag combinations without any luck. I can easily send messages in the other direction from C# managed to C++ unmanaged. Does anyone have any insight. Can any of you guys successfully send messages from C++ unmanaged to C# managed? I can find plenty of examples of intra amanged or unmanaged pipes but not inter managed to/from unamanged - just claims to be able to do it. In the listings, I have omitted much of the wrapper stuff for clarity. The key bits I believe that are relevant are the pipe connection/creation/read and write methods. Don't worry too much about blocking/threading here. C# Server side // This runs in its own thread and so it is OK to block private void ConnectToClient() { // This server will listen to the sending client if (m_InPipeStream == null) { m_InPipeStream = new NamedPipeServerStream("TestPipe", PipeDirection.In, 1); } // Wait for client to connect to our server m_InPipeStream.WaitForConnection(); // Verify client is running if (!m_InPipeStream.IsConnected) { return; } // Start listening for messages on the client stream if (m_InPipeStream != null && m_InPipeStream.CanRead) { ReadThread = new Thread(new ParameterizedThreadStart(Read)); ReadThread.Start(m_InPipeStream); } } // This runs in its own thread and so it is OK to block private void Read(object serverObj) { NamedPipeServerStream pipeStream = (NamedPipeServerStream)serverObj; using (StreamReader sr = new StreamReader(pipeStream)) { while (true) { string buffer = "" ; try { // Blocks here until the handle is closed by the client-side!! buffer = sr.ReadLine(); // <<<<<<<<<<<<<< Sticks here } catch { // Read error break; } // Client has disconnected? if (buffer == null || buffer.Length == 0) break; // Fire message received event if message is non-empty if (MessageReceived != null && buffer != "") { MessageReceived(buffer); } } } } C++ client side // Static - running in its own thread. DWORD CNamedPipe::ListenForServer(LPVOID arg) { // The calling app (this) is passed as the parameter CNamedPipe* app = (CNamedPipe*)arg; // Out-Pipe: connect as a client to a waiting server app->m_hOutPipeHandle = CreateFile("\\\\.\\pipe\\TestPipe", GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); // Could not create handle if (app->m_hInPipeHandle == NULL || app->m_hInPipeHandle == INVALID_HANDLE_VALUE) { return 1; } return 0; } // Sends a message to the server BOOL CNamedPipe::SendMessage(CString message) { DWORD dwSent; if (m_hOutPipeHandle == NULL || m_hOutPipeHandle == INVALID_HANDLE_VALUE) { return FALSE; } else { BOOL bOK = WriteFile(m_hOutPipeHandle, message, message.GetLength()+1, &dwSent, NULL); //FlushFileBuffers(m_hOutPipeHandle); // <<<<<<< Tried this return (!bOK || (message.GetLength()+1) != dwSent) ? FALSE : TRUE; } } // Somewhere in the Windows C++/MFC code... ... // This write is non-blocking. It just passes through having loaded the pipe. m_pNamedPipe->SendMessage("Hi de hi"); ...

  Read the article

• optimizing the jquery in django

  - by sankar

  I have done the following code which actually dynamically generate the values in the third list box using ajax and jquery concepts. Thoug it works, i need to optimize it. Below is the code i am working on now. <html> <head> <title>Comparison based on ID Number</title> <script src="http://code.jquery.com/jquery-latest.js"></script> </head> <body> {% if form.errors %} <p style="color: red;"> Please correct the error{{ form.errors|pluralize }} below. </p> {% endif %} <form action="/idnumber/" method="post" align= "center">{% csrf_token %} <p>Select different id numbers and the name of the <b> Measurement Group </b>to start the comparison</p> <table align = "center"> <tr> <th><label for="id_criteria_1">Id Number 1:</label></th> <th> {{ form.idnumber_1 }} </th> </tr> <tr> <th><label for="id_criteria_2">Id Number 2:</label></th> <th> {{ form.idnumber_2 }} </th> </tr> <tr> <th><label for="group_name_list">Group Name:</label></th> <th><select name="group_name_list" id="id_group_name_list"> <option>Select</option> </select> </th> </tr> <script> $('#id_idnumber_2').change( function get_group_names() { var value1 = $('#id_idnumber_1').attr('value'); var value2 = $(this).attr('value'); alert(value1); alert(value2); var request = $.ajax({ url: "/getGroupnamesforIDnumber/", type: "GET", data: {idnumber_1 : value1,idnumber_2 : value2}, dataType: "json", success: function(data) { alert(data); var myselect = document.getElementById("group_name_list"); document.getElementById("group_name_list").options.length = 1; var length_of_data = data.length; alert(length_of_data); try{ for(var i = 0;i < length_of_data; i++) { myselect.add(new Option(data[i].group_name, "i"), myselect.options[i]) //add new option to beginning of "sample" } } catch(e){ //in IE, try the below version instead of add() for(var i = 0;i < length_of_data; i++) { myselect.add(new Option(data[i].group_name, data[i].group_name)) //add new option to end of "sample" } } } }); }); </script> <tr align = "center"><th><input type="submit" value="Submit"></th></tr> </table> </form> </body> </html> everything works fine but there is a little problem in my code. (ie) my ajax function calls only when there is a change in the select list 2 (ie) 'id_number_2'. I want to make it call in such a way that which ever select box, the third list box should be updated automatically. Can anyone please help me on this with a possible logical solution

  Read the article

• Do you know of a C macro to compute Unix time and date?

  - by Alexis Wilke

  I'm wondering if someone knows/has a C macro to compute a static Unix time from a hard coded date and time as in: time_t t = UNIX_TIMESTAMP(2012, 5, 10, 9, 26, 13); I'm looking into that because I want to have a numeric static timestamp. This will be done hundred of times throughout the software, each time with a different date, and I want to make sure it is fast because it will run hundreds of times every second. Converting dates that many times would definitively slow down things (i.e. calling mktime() is slower than having a static number compiled in place, right?) [made an update to try to render this paragraph clearer, Nov 23, 2012] Update I want to clarify the question with more information about the process being used. As my server receives requests, for each request, it starts a new process. That process is constantly updated with new plugins and quite often such updates require a database update. Those must be run only once. To know whether an update is necessary, I want to use a Unix date (which is better than using a counter because a counter is much more likely to break once in a while.) The plugins will thus receive an update signal and have their on_update() function called. There I want to do something like this: void some_plugin::on_update(time_t last_update) { if(last_update < UNIX_TIMESTAMP(2010, 3, 22, 20, 9, 26)) { ...run update... } if(last_update < UNIX_TIMESTAMP(2012, 5, 10, 9, 26, 13)) { ...run update... } // as many test as required... } As you can see, if I have to compute the unix timestamp each time, this could represent thousands of calls per process and if you receive 100 hits a second x 1000 calls, you wasted 100,000 calls when you could have had the compiler compute those numbers once at compile time. Putting the value in a static variable is of no interest because this code will run once per process run. Note that the last_update variable changes depending on the website being hit (it comes from the database.) Code Okay, I got the code now: // helper (Days in February) #define _SNAP_UNIX_TIMESTAMP_FDAY(year) \ (((year) % 400) == 0 ? 29LL : \ (((year) % 100) == 0 ? 28LL : \ (((year) % 4) == 0 ? 29LL : \ 28LL))) // helper (Days in the year) #define _SNAP_UNIX_TIMESTAMP_YDAY(year, month, day) \ ( \ /* January */ static_cast<qint64>(day) \ /* February */ + ((month) >= 2 ? 31LL : 0LL) \ /* March */ + ((month) >= 3 ? _SNAP_UNIX_TIMESTAMP_FDAY(year) : 0LL) \ /* April */ + ((month) >= 4 ? 31LL : 0LL) \ /* May */ + ((month) >= 5 ? 30LL : 0LL) \ /* June */ + ((month) >= 6 ? 31LL : 0LL) \ /* July */ + ((month) >= 7 ? 30LL : 0LL) \ /* August */ + ((month) >= 8 ? 31LL : 0LL) \ /* September */+ ((month) >= 9 ? 31LL : 0LL) \ /* October */ + ((month) >= 10 ? 30LL : 0LL) \ /* November */ + ((month) >= 11 ? 31LL : 0LL) \ /* December */ + ((month) >= 12 ? 30LL : 0LL) \ ) #define SNAP_UNIX_TIMESTAMP(year, month, day, hour, minute, second) \ ( /* time */ static_cast<qint64>(second) \ + static_cast<qint64>(minute) * 60LL \ + static_cast<qint64>(hour) * 3600LL \ + /* year day (month + day) */ (_SNAP_UNIX_TIMESTAMP_YDAY(year, month, day) - 1) * 86400LL \ + /* year */ (static_cast<qint64>(year) - 1970LL) * 31536000LL \ + ((static_cast<qint64>(year) - 1969LL) / 4LL) * 86400LL \ - ((static_cast<qint64>(year) - 1901LL) / 100LL) * 86400LL \ + ((static_cast<qint64>(year) - 1601LL) / 400LL) * 86400LL ) WARNING: Do not use these macros to dynamically compute a date. It is SLOWER than mktime(). This being said, if you have a hard coded date, then the compiler will compute the time_t value at compile time. Slower to compile, but faster to execute over and over again.

  Read the article

• css style "bottom:0" in dynamic <div>

  - by baruch

  I have an absolutely positioned element at the bottom of a container element. The problem is that the content of the container changes dynamically (javascript). In FF it still works fine, but IE7 (didn't test any others) seems to calculate the position of the element relative to the top of the container on page loading, and then doesn't update it. examples: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="he"> <head> </head> <body> <div style="position:relative;" onmouseover="document.getElementById('test').style.display='block'" onmouseout="document.getElementById('test').style.display='none'"> rufaurhf refhwrew regfnwreug wurwsuref erfbw rebvwsrefg</br> rufaurhf refhwrew regfnwreug wurwsuref erfbw rebvwsrefg</br> rufaurhf refhwrew regfnwreug wurwsuref erfbw rebvwsrefg</br> <div id="test" style="display:none;"> rufaurhf refhwrew regfnwreug wurwsuref erfbw rebvwsrefg</br> rufaurhf refhwrew regfnwreug wurwsuref erfbw rebvwsrefg</br> rufaurhf refhwrew regfnwreug wurwsuref erfbw rebvwsrefg</br> </div> <div style="position:absolute;bottom:0;background-color:blue;"> rufaurhf refhwrew regfnwreug wurwsuref erfbw rebvwsrefg</br> rufaurhf refhwrew regfnwreug wurwsuref erfbw rebvwsrefg</br> </div> </div> </body> </html> and the opposite: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="he"> <head> </head> <body> <div style="position:relative;" onmouseover="document.getElementById('test').style.display='none'" onmouseout="document.getElementById('test').style.display='block'"> rufaurhf refhwrew regfnwreug wurwsuref erfbw rebvwsrefg</br> rufaurhf refhwrew regfnwreug wurwsuref erfbw rebvwsrefg</br> rufaurhf refhwrew regfnwreug wurwsuref erfbw rebvwsrefg</br> <div id="test" style="display:block;"> rufaurhf refhwrew regfnwreug wurwsuref erfbw rebvwsrefg</br> rufaurhf refhwrew regfnwreug wurwsuref erfbw rebvwsrefg</br> rufaurhf refhwrew regfnwreug wurwsuref erfbw rebvwsrefg</br> </div> <div style="position:absolute;bottom:0;background-color:blue;"> rufaurhf refhwrew regfnwreug wurwsuref erfbw rebvwsrefg</br> rufaurhf refhwrew regfnwreug wurwsuref erfbw rebvwsrefg</br> </div> </div> </body> </html> Any ideas/workarounds?

  Read the article

• Why does this Java code not utilize all CPU cores?

  - by ReneS

  The attached simple Java code should load all available cpu core when starting it with the right parameters. So for instance, you start it with java VMTest 8 int 0 and it will start 8 threads that do nothing else than looping and adding 2 to an integer. Something that runs in registers and not even allocates new memory. The problem we are facing now is, that we do not get a 24 core machine loaded (AMD 2 sockets with 12 cores each), when running this simple program (with 24 threads of course). Similar things happen with 2 programs each 12 threads or smaller machines. So our suspicion is that the JVM (Sun JDK 6u20 on Linux x64) does not scale well. Did anyone see similar things or has the ability to run it and report whether or not it runs well on his/her machine (= 8 cores only please)? Ideas? I tried that on Amazon EC2 with 8 cores too, but the virtual machine seems to run different from a real box, so the loading behaves totally strange. package com.test; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; import java.util.concurrent.Future; import java.util.concurrent.TimeUnit; public class VMTest { public class IntTask implements Runnable { @Override public void run() { int i = 0; while (true) { i = i + 2; } } } public class StringTask implements Runnable { @Override public void run() { int i = 0; String s; while (true) { i++; s = "s" + Integer.valueOf(i); } } } public class ArrayTask implements Runnable { private final int size; public ArrayTask(int size) { this.size = size; } @Override public void run() { int i = 0; String[] s; while (true) { i++; s = new String[size]; } } } public void doIt(String[] args) throws InterruptedException { final String command = args[1].trim(); ExecutorService executor = Executors.newFixedThreadPool(Integer.valueOf(args[0])); for (int i = 0; i < Integer.valueOf(args[0]); i++) { Runnable runnable = null; if (command.equalsIgnoreCase("int")) { runnable = new IntTask(); } else if (command.equalsIgnoreCase("string")) { runnable = new StringTask(); } Future<?> submit = executor.submit(runnable); } executor.awaitTermination(1, TimeUnit.HOURS); } public static void main(String[] args) throws InterruptedException { if (args.length < 3) { System.err.println("Usage: VMTest threadCount taskDef size"); System.err.println("threadCount: Number 1..n"); System.err.println("taskDef: int string array"); System.err.println("size: size of memory allocation for array, "); System.exit(-1); } new VMTest().doIt(args); } }

  Read the article

• Reading a user input (character or string of letters) into ggplot command inside a switch statement or a nested ifelse (with functions in it)

  - by statisticalbeginner

  I have code like AA <- as.integer(readline("Select any number")) switch(AA, 1={ num <-as.integer(readline("Select any one of the options \n")) print('You have selected option 1') #reading user data var <- readline("enter the variable name \n") #aggregating the data based on required condition gg1 <- aggregate(cbind(get(var))~Mi+hours,a, FUN=mean) #Ploting ggplot(gg1, aes(x = hours, y = get(var), group = Mi, fill = Mi, color = Mi)) + geom_point() + geom_smooth(stat="smooth", alpha = I(0.01)) }, 2={ print('bar') }, { print('default') } ) The dataset is [dataset][1] I have loaded the dataset into object list a <- read.table(file.choose(), header=FALSE,col.names= c("Ei","Mi","hours","Nphy","Cphy","CHLphy","Nhet","Chet","Ndet","Cdet","DON","DOC","DIN","DIC","AT","dCCHO","TEPC","Ncocco","Ccocco","CHLcocco","PICcocco","par","Temp","Sal","co2atm","u10","dicfl","co2ppm","co2mol","pH")) I am getting error like source ("switch_statement_check.R") Select any one of the options 1 [1] "You have selected option 1" enter the variable name Nphy Error in eval(expr, envir, enclos) : (list) object cannot be coerced to type 'double' > gg1 is getting data that is fine. I dont know what to do to make the variable entered by user to work in that ggplot command. Please suggest any solution for this. The dput output structure(list(Ei = c(1L, 1L, 1L, 1L, 1L, 1L), Mi = c(1L, 1L, 1L, 1L, 1L, 1L), hours = 1:6, Nphy = c(0.1023488, 0.104524, 0.1064772, 0.1081702, 0.1095905, 0.110759), Cphy = c(0.6534707, 0.6448216, 0.6369597, 0.6299084, 0.6239005, 0.6191941), CHLphy = c(0.1053458, 0.110325, 0.1148174, 0.1187672, 0.122146, 0.1249877), Nhet = c(0.04994161, 0.04988347, 0.04982555, 0.04976784, 0.04971029, 0.04965285), Chet = c(0.3308593, 0.3304699, 0.3300819, 0.3296952, 0.3293089, 0.3289243), Ndet = c(0.04991916, 0.04984045, 0.04976363, 0.0496884, 0.04961446, 0.04954156), Cdet = c(0.3307085, 0.3301691, 0.3296314, 0.3290949, 0.3285598, 0.3280252), DON = c(0.05042275, 0.05085697, 0.05130091, 0.05175249, 0.05220978, 0.05267118 ), DOC = c(49.76304, 49.52745, 49.29323, 49.06034, 48.82878, 48.59851), DIN = c(14.9933, 14.98729, 14.98221, 14.9781, 14.97485, 14.97225), DIC = c(2050.132, 2050.264, 2050.396, 2050.524, 2050.641, 2050.758), AT = c(2150.007, 2150.007, 2150.007, 2150.007, 2150.007, 2150.007), dCCHO = c(0.964222, 0.930869, 0.8997098, 0.870544, 0.843196, 0.8175117), TEPC = c(0.1339044, 0.1652179, 0.1941872, 0.2210289, 0.2459341, 0.2690721), Ncocco = c(0.1040715, 0.1076058, 0.1104229, 0.1125141, 0.1140222, 0.1151228), Ccocco = c(0.6500288, 0.6386706, 0.6291149, 0.6213265, 0.6152447, 0.6108502), CHLcocco = c(0.1087667, 0.1164099, 0.1225822, 0.1273103, 0.1308843, 0.1336465), PICcocco = c(0.1000664, 0.1001396, 0.1007908, 0.101836, 0.1034179, 0.1055634), par = c(0, 0, 0.8695131, 1.551317, 2.777707, 4.814341), Temp = c(9.9, 9.9, 9.9, 9.9, 9.9, 9.9), Sal = c(31.31, 31.31, 31.31, 31.31, 31.31, 31.31), co2atm = c(370, 370, 370, 370, 370, 370), u10 = c(0.01, 0.01, 0.01, 0.01, 0.01, 0.01), dicfl = c(-2.963256, -2.971632, -2.980446, -2.989259, -2.997877, -3.005702), co2ppm = c(565.1855, 565.7373, 566.3179, 566.8983, 567.466, 567.9814), co2mol = c(0.02562326, 0.02564828, 0.0256746, 0.02570091, 0.02572665, 0.02575002 ), pH = c(7.879427, 7.879042, 7.878636, 7.878231, 7.877835, 7.877475)), .Names = c("Ei", "Mi", "hours", "Nphy", "Cphy", "CHLphy", "Nhet", "Chet", "Ndet", "Cdet", "DON", "DOC", "DIN", "DIC", "AT", "dCCHO", "TEPC", "Ncocco", "Ccocco", "CHLcocco", "PICcocco", "par", "Temp", "Sal", "co2atm", "u10", "dicfl", "co2ppm", "co2mol", "pH"), row.names = c(NA, 6L), class = "data.frame") As per the below suggestions I have tried a lot but it is not working. Summarizing I will say: var <- readline("enter a variable name") I cant use get(var) inside any command but not inside ggplot, it wont work. gg1$var it also doesnt work, even after changing the column names. Does it have a solution or should I just choose to import from an excel sheet, thats better? Tried with if else and functions fun1 <- function() { print('You have selected option 1') my <- as.character((readline("enter the variable name \n"))) gg1 <- aggregate(cbind(get(my))~Mi+hours,a, FUN=mean) names(gg1)[3] <- my #print(names(gg1)) ggplot (gg1,aes_string(x="hours",y=(my),group="Mi",color="Mi")) + geom_point() } my <- as.integer(readline("enter a number")) ifelse(my == 1,fun1(),"") ifelse(my == 2,print ("its 2"),"") ifelse(my == 3,print ("its 3"),"") ifelse(my != (1 || 2|| 3) ,print("wrong number"),"") Not working either...:(

  Read the article

• String Sharing/Reference issue with objects in Delphi

  - by jenakai123

  My application builds many objects in memory based on filenames (among other string based information). I was hoping to optimise memory usage by storing the path and filename separately, and then sharing the path between objects in the same path. I wasn't trying to look at using a string pool or anything, basically my objects are sorted so if I have 10 objects with the same path I want objects 2-10 to have their path "pointed" at object 1's path (eg object[2].Path=object[1].Path); I have a problem though, I don't believe that my objects are in fact sharing a reference to the same string after I think I am telling them to (by the object[2].Path=object[1].Path assignment). When I do an experiment with a string list and set all the values to point to the first value in the list I can see the "memory conservation" in action, but when I use objects I see absolutely no change at all, admittedly I am only using task manager (private working set) to watch for memory use changes. Here's a contrived example, I hope this makes sense. I have an object: TfileObject=class(Tobject) FpathPart: string; FfilePart: string; end; Now I create 1,000,000 instances of the object, using a new string for each one: var x: integer; MyFilePath: string; fo: TfileObject; begin for x := 1 to 1000000 do begin // create a new string for every iteration of the loop MyFilePath:=ExtractFilePath(Application.ExeName); fo:=TfileObject.Create; fo.FpathPart:=MyFilePath; FobjectList.Add(fo); end; end; Run this up and task manager says I am using 68MB of memory or something. (Note that if I allocated MyFilePath outside of the loop then I do save memory because of 1 instance of the string, but this is a contrived example and not actually how it would happen in the app). Now I want to "optimise" my memory usage by making all objects share the same instance of the path string, since it's the same value: var x: integer; begin for x:=1 to FobjectList.Count-1 do begin TfileObject(FobjectList[x]).FpathPart:=TfileObject(FobjectList[0]).FpathPart; end; end; Task Manager shows absouletly no change. However if I do something similar with a TstringList: var x: integer; begin for x := 1 to 1000000 do begin FstringList.Add(ExtractFilePath(Application.ExeName)); end; end; Task Manager says 60MB memory use. Now optimise with: var x: integer; begin for x := 1 to FstringList.Count - 1 do FstringList[x]:=FstringList[0]; end; Task Manager shows the drop in memory usage that I would expect, now 10MB. So I seem to be able to share strings in a string list, but not in objects. I am obviously missing something conceptually, in code or both! I hope this makes sense, I can really see the ability to conserve memory using this technique as I have a lot of objects all with lots of string information, that data is sorted in many different ways and I would like to be able to iterate over this data once it is loaded into memory and free some of that memory back up again by sharing strings in this way. Thanks in advance for any assistance you can offer.

  Read the article

• GDI+ & Delphi, PNG resource, DrawImage, ColorConversion -> Out of Memory

  - by Paul

  I have started to toy around with GDI+ in Delphi 2009. Among the things that I wanted to do was to load a PNG resource and apply a Color Conversion to it when drawing it to the Graphics object. I am using the code provided in http://www.bilsen.com/gdiplus/. To do that I just added a new constructor to TGPBitmap that uses the same code found in <www.codeproject.com>/KB/GDI-plus/cgdiplusbitmap.aspx (C++) or <www.masm32.com>/board/index.php?topic=10191.0 (MASM) converted to Delphi. For reference, the converted code is as follows: constructor TGPBitmap.Create(const Instance: HInst; const PngName: String; dummy : PngResource_t); const cPngType : string = 'PNG'; var hResource : HRSRC; imageSize : DWORD; pResourceData : Pointer; hBuffer : HGLOBAL; pBuffer : Pointer; pStream : IStream; begin inherited Create; hResource := FindResource(Instance, PWideChar(PngName), PWideChar(cPngType)); if hResource = 0 then Exit; imageSize := SizeofResource(Instance, hResource); if imageSize = 0 then Exit; pResourceData := LockResource(LoadResource(Instance, hResource)); if pResourceData = nil then Exit; hBuffer := GlobalAlloc(GMEM_MOVEABLE, imageSize); if hBuffer <> 0 then begin try pBuffer := GlobalLock(hBuffer); if pBuffer <> nil then begin try CopyMemory(pBuffer, pResourceData, imageSize); if CreateStreamOnHGlobal(hBuffer, FALSE, pStream) = S_OK then begin GdipCheck(GdipCreateBitmapFromStream(pStream, FNativeHandle)); end; finally GlobalUnlock(hBuffer); pStream := nil; end; end; finally GlobalFree(hBuffer); end; end; end; The code seems to work fine as I am able to draw the loaded image without any problems. However, if I try to apply a Color Conversion when drawing it, then I get a lovely error: (GDI+ Error) Out of Memory. If I load the bitmap from a file, or if I create a temporary to which I draw the initial bitmap and then use the temporary, then it works just fine. What bugs me is that if I take the C++ project from codeproject, add the same PNG as resource and use the same color conversion (in other words, do the exact same thing I am doing in Delphi in the same order and with the same function calls that happen to go to the same DLL), then it works. The C++ code looks like this: const Gdiplus::ColorMatrix cTrMatrix = { { {1.0, 0.0, 0.0, 0.0, 0.0}, {0.0, 1.0, 0.0, 0.0, 0.0}, {0.0, 0.0, 1.0, 0.0, 0.0}, {0.0, 0.0, 0.0, 0.5, 0.0}, {0.0, 0.0, 0.0, 0.0, 1.0} } }; Gdiplus::ImageAttributes imgAttrs; imgAttrs.SetColorMatrix(&cTrMatrix, Gdiplus::ColorMatrixFlagsDefault, Gdiplus::ColorAdjustTypeBitmap); graphics.DrawImage(*pBitmap, Gdiplus::Rect(0, 0, pBitmap->m_pBitmap->GetWidth(), pBitmap->m_pBitmap->GetHeight()), 0, 0, pBitmap->m_pBitmap->GetWidth(), pBitmap->m_pBitmap->GetHeight(), Gdiplus::UnitPixel, &imgAttrs); The Delphi counterpart is: const cTrMatrix: TGPColorMatrix = ( M: ((1.0, 0.0, 0.0, 0.0, 0.0), (0.0, 1.0, 0.0, 0.0, 0.0), (0.0, 0.0, 1.0, 0.0, 0.0), (0.0, 0.0, 0.0, 0.5, 0.0), (0.0, 0.0, 0.0, 0.0, 1.0))); var lImgAttrTr : IGPImageAttributes; lBitmap : IGPBitmap; begin // ... lImgAttrTr := TGPImageAttributes.Create; lImgAttrTr.SetColorMatrix(cTrMatrix, ColorMatrixFlagsDefault, ColorAdjustTypeBitmap); aGraphics.DrawImage ( lBitmap, TGPRect.Create ( 0, 0, lBitmap.Width, lBitmap.Height ), 0, 0, lBitmap.Width, lBitmap.Height, UnitPixel, lImgAttrTr ); I am completely clueless as to what may be causing the issue, and Google has not been of any help. Any ideas, comments and explanations are highly appreciated.

  Read the article

• Muti-Schema Privileges for a Table Trigger in an Oracle Database

  - by sisslack

  I'm trying to write a table trigger which queries another table that is outside the schema where the trigger will reside. Is this possible? It seems like I have no problem querying tables in my schema but I get: Error: ORA-00942: table or view does not exist when trying trying to query tables outside my schema. EDIT My apologies for not providing as much information as possible the first time around. I was under the impression this question was more simple. I'm trying create a trigger on a table that changes some fields on a newly inserted row based on the existence of some data that may or may not be in a table that is in another schema. The user account that I'm using to create the trigger does have the permissions to run the queries independently. In fact, I've had my trigger print the query I'm trying to run and was able to run it on it's own successfully. I should also note that I'm building the query dynamically by using the EXECUTE IMMEDIATE statement. Here's an example: CREATE OR REPLACE TRIGGER MAIN_SCHEMA.EVENTS BEFORE INSERT ON MAIN_SCHEMA.EVENTS REFERENCING OLD AS OLD NEW AS NEW FOR EACH ROW DECLARE rtn_count NUMBER := 0; table_name VARCHAR2(17) := :NEW.SOME_FIELD; key_field VARCHAR2(20) := :NEW.ANOTHER_FIELD; BEGIN CASE WHEN (key_field = 'condition_a') THEN EXECUTE IMMEDIATE 'select count(*) from OTHER_SCHEMA_A.'||table_name||' where KEY_FIELD='''||key_field||'''' INTO rtn_count; WHEN (key_field = 'condition_b') THEN EXECUTE IMMEDIATE 'select count(*) from OTHER_SCHEMA_B.'||table_name||' where KEY_FIELD='''||key_field||'''' INTO rtn_count; WHEN (key_field = 'condition_c') THEN EXECUTE IMMEDIATE 'select count(*) from OTHER_SCHEMA_C.'||table_name||' where KEY_FIELD='''||key_field||'''' INTO rtn_count; END CASE; IF (rtn_count > 0) THEN -- change some fields that are to be inserted END IF; END; The trigger seams to fail on the EXECUTE IMMEDIATE with the previously mentioned error. EDIT I have done some more research and I can offer more clarification. The user account I'm using to create this trigger is not MAIN_SCHEMA or any one of the OTHER_SCHEMA_Xs. The account I'm using (ME) is given privileges to the involved tables via the schema users themselves. For example (USER_TAB_PRIVS): GRANTOR GRANTEE TABLE_SCHEMA TABLE_NAME PRIVILEGE GRANTABLE HIERARCHY MAIN_SCHEMA ME MAIN_SCHEMA EVENTS DELETE NO NO MAIN_SCHEMA ME MAIN_SCHEMA EVENTS INSERT NO NO MAIN_SCHEMA ME MAIN_SCHEMA EVENTS SELECT NO NO MAIN_SCHEMA ME MAIN_SCHEMA EVENTS UPDATE NO NO OTHER_SCHEMA_X ME OTHER_SCHEMA_X TARGET_TBL SELECT NO NO And I have the following system privileges (USER_SYS_PRIVS): USERNAME PRIVILEGE ADMIN_OPTION ME ALTER ANY TRIGGER NO ME CREATE ANY TRIGGER NO ME UNLIMITED TABLESPACE NO And this is what I found in the Oracle documentation: To create a trigger in another user's schema, or to reference a table in another schema from a trigger in your schema, you must have the CREATE ANY TRIGGER system privilege. With this privilege, the trigger can be created in any schema and can be associated with any user's table. In addition, the user creating the trigger must also have EXECUTE privilege on the referenced procedures, functions, or packages. Here: Oracle Doc So it looks to me like this should work, but I'm not sure about the "EXECUTE privilege" it's referring to in the doc.

  Read the article

• Problem using delete[] (Heap corruption) when implementing operator+= (C++)

  - by Darel

  I've been trying to figure this out for hours now, and I'm at my wit's end. I would surely appreciate it if someone could tell me when I'm doing wrong. I have written a simple class to emulate basic functionality of strings. The class's members include a character pointer data (which points to a dynamically created char array) and an integer strSize (which holds the length of the string, sans terminator.) Since I'm using new and delete, I've implemented the copy constructor and destructor. My problem occurs when I try to implement the operator+=. The LHS object builds the new string correctly - I can even print it using cout - but the problem comes when I try to deallocate the data pointer in the destructor: I get a "Heap Corruption Detected after normal block" at the memory address pointed to by the data array the destructor is trying to deallocate. Here's my complete class and test program: #include <iostream> using namespace std; // Class to emulate string class Str { public: // Default constructor Str(): data(0), strSize(0) { } // Constructor from string literal Str(const char* cp) { data = new char[strlen(cp) + 1]; char *p = data; const char* q = cp; while (*q) *p++ = *q++; *p = '\0'; strSize = strlen(cp); } Str& operator+=(const Str& rhs) { // create new dynamic memory to hold concatenated string char* str = new char[strSize + rhs.strSize + 1]; char* p = str; // new data char* i = data; // old data const char* q = rhs.data; // data to append // append old string to new string in new dynamic memory while (*p++ = *i++) ; p--; while (*p++ = *q++) ; *p = '\0'; // assign new values to data and strSize delete[] data; data = str; strSize += rhs.strSize; return *this; } // Copy constructor Str(const Str& s) { data = new char[s.strSize + 1]; char *p = data; char *q = s.data; while (*q) *p++ = *q++; *p = '\0'; strSize = s.strSize; } // destructor ~Str() { delete[] data; } const char& operator[](int i) const { return data[i]; } int size() const { return strSize; } private: char *data; int strSize; }; ostream& operator<<(ostream& os, const Str& s) { for (int i = 0; i != s.size(); ++i) os << s[i]; return os; } // Test constructor, copy constructor, and += operator int main() { Str s = "hello"; // destructor for s works ok Str x = s; // destructor for x works ok s += "world!"; // destructor for s gives error cout << s << endl; cout << x << endl; return 0; }

  Read the article

• xts error - order.by requires an appropriate time-based object

  - by Samo

  I can not resolve why error in simple creation of xts object xts(rep(0, NROW(TICK.NYSE)), order.by = index(TICK.NYSE)) Error in xts(rep(0, NROW(TICK.NYSE)), order.by = index(TICK.NYSE)) : order.by requires an appropriate time-based object appeared while this was working perfectly 14 days ago when I last used the same code (since then the only difference is that TICK.NYSE grow in length since data was added since then). More details below: > Sys.getenv("TZ") [1] "EST" > tail(xts(rep(0, NROW(TICK.NYSE)), order.by = index(TICK.NYSE))) Error in xts(rep(0, NROW(TICK.NYSE)), order.by = index(TICK.NYSE)) : order.by requires an appropriate time-based object > class(index(TICK.NYSE["T09:30/T09:31"])) [1] "POSIXct" > tail(xts(rep(0, NROW(tail(TICK.NYSE))), order.by = index(tail(TICK.NYSE)))) Error in xts(rep(0, NROW(tail(TICK.NYSE))), order.by = index(tail(TICK.NYSE))) : order.by requires an appropriate time-based object > tail(TICK.NYSE) TICK-NYSE.Open TICK-NYSE.High TICK-NYSE.Low TICK-NYSE.Close 2012-03-15 14:54:00 -278 -89 -299 -89 2012-03-15 14:55:00 -89 427 -89 201 2012-03-15 14:56:00 201 318 30 234 2012-03-15 14:57:00 234 242 -222 -64 2012-03-15 14:58:00 -64 346 -82 346 2012-03-15 14:59:00 346 525 36 525 TICK-NYSE.Volume TICK-NYSE.WAP TICK-NYSE.hasGaps 2012-03-15 14:54:00 0 0 0 2012-03-15 14:55:00 0 0 0 2012-03-15 14:56:00 0 0 0 2012-03-15 14:57:00 0 0 0 2012-03-15 14:58:00 0 0 0 2012-03-15 14:59:00 0 0 0 TICK-NYSE.Count 2012-03-15 14:54:00 31 2012-03-15 14:55:00 31 2012-03-15 14:56:00 31 2012-03-15 14:57:00 31 2012-03-15 14:58:00 29 2012-03-15 14:59:00 30 > str(TICK.NYSE) An ‘xts’ object from 2011-01-18 09:30:00 to 2012-03-15 14:59:00 containing: Data: num [1:114090, 1:8] -5 -144 24 -148 -184 -77 20 121 111 -60 ... - attr(*, "dimnames")=List of 2 ..$ : NULL ..$ : chr [1:8] "TICK-NYSE.Open" "TICK-NYSE.High" "TICK-NYSE.Low" "TICK-NYSE.Close" ... Indexed by objects of class: [POSIXct,POSIXt] TZ: xts Attributes: List of 4 $ from : chr "20110119 23:59:59" $ to : chr "20110124 23:59:59" $ src : chr "IB" $ updated: POSIXct[1:1], format: "2012-01-19 02:34:52" > str(index(TICK.NYSE)) Class 'POSIXct' atomic [1:114090] 1.3e+09 1.3e+09 1.3e+09 1.3e+09 1.3e+09 ... ..- attr(*, "tzone")= chr "" ..- attr(*, "tclass")= chr [1:2] "POSIXct" "POSIXt" > Sys.getenv("TZ") [1] "EST" > tail(index(TICK.NYSE)) [1] "2012-03-15 14:54:00 EST" "2012-03-15 14:55:00 EST" [3] "2012-03-15 14:56:00 EST" "2012-03-15 14:57:00 EST" [5] "2012-03-15 14:58:00 EST" "2012-03-15 14:59:00 EST" > head(index(TICK.NYSE)) [1] "2011-01-18 09:30:00 EST" "2011-01-18 09:31:00 EST" [3] "2011-01-18 09:32:00 EST" "2011-01-18 09:33:00 EST" [5] "2011-01-18 09:34:00 EST" "2011-01-18 09:35:00 EST" > Sys.info() sysname "Linux" release "3.0.0-16-generic" version "#28-Ubuntu SMP Fri Jan 27 17:44:39 UTC 2012" > sessionInfo() R version 2.14.1 (2011-12-22) Platform: x86_64-pc-linux-gnu (64-bit) locale: [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C [3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8 [5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8 [7] LC_PAPER=en_US.UTF-8 LC_NAME=en_US.UTF-8 [9] LC_ADDRESS=en_US.UTF-8 LC_TELEPHONE=en_US.UTF-8 [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=en_US.UTF-8 attached base packages: [1] stats graphics grDevices utils datasets methods base other attached packages: [1] lattice_0.20-0 multicore_0.1-7 [3] doSNOW_1.0.5 snow_0.3-8 [5] doRedis_1.0.4 rredis_1.6.3 [7] foreach_1.3.2 codetools_0.2-8 [9] iterators_1.0.5 PerformanceAnalytics_1.0.3.3 [11] quantstrat_0.6.1 blotter_0.8.4 [13] twsInstrument_1.3-3 FinancialInstrument_0.10.6 [15] IBrokers_0.9-6 quantmod_0.3-18 [17] TTR_0.21-0 xts_0.8-4 [19] Defaults_1.1-1 strucchange_1.4-6 [21] sandwich_2.2-8 zoo_1.7-7 [23] rj_1.0.2-5 loaded via a namespace (and not attached): [1] grid_2.14.1 tools_2.14.1 > dput(tail(TICK.NYSE)) structure(c(-385, -213, -42, -334, -233, -111, -121, 20, -14, -125, -73, 265, -583, -269, -426, -520, -443, -440, -213, -42, -334, -233, -111, 119, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 31, 31, 30, 30, 31, 31), class = c("xts", "zoo" ), .indexCLASS = c("POSIXct", "POSIXt"), .indexTZ = "", from = "20110119 23:59:59", to = "20110124 23:59:59", src = "IB", updated = structure(1326958492.96405, class = c("POSIXct", "POSIXt")), index = structure(c(1331927640, 1331927700, 1331927760, 1331927820, 1331927880, 1331927940), tzone = "", tclass = c("POSIXct", "POSIXt")), .Dim = c(6L, 8L), .Dimnames = list(NULL, c("TICK-NYSE.Open", "TICK-NYSE.High", "TICK-NYSE.Low", "TICK-NYSE.Close", "TICK-NYSE.Volume", "TICK-NYSE.WAP", "TICK-NYSE.hasGaps", "TICK-NYSE.Count")))

  Read the article

• onDraw() triggered but results don't show

  - by Don

  I have the following routine in a subclass of view: It calculates an array of points that make up a line, then erases the previous lines, then draws the new lines (impact refers to the width in pixels drawn with multiple lines). The line is your basic bell curve, squeezed or stretched by variance and x-factor. Unfortunately, nothing shows on the screen. A previous version with drawPoint() and no array worked, and I've verified the array contents are being loaded correctly, and I can see that my onDraw() is being triggered. Any ideas why it might not be drawn? Thanks in advance! protected void drawNewLine( int maxx, int maxy, Canvas canvas, int impact, double variance, double xFactor, int color) { // impact = 2 to 8; xFactor between 4 and 20; variance between 0.2 and 5 double x = 0; double y = 0; int cx = maxx / 2; int cy = maxy / 2; int mu = cx; int index = 0; points[maxx<<1][1] = points[maxx<<1][0]; for (x = 0; x < maxx; x++) { points[index][1] = points[index][0]; points[index][0] = (float) x; Log.i(DEBUG_TAG, "x: " + x); index++; double root = 1.0 / (Math.sqrt(2 * Math.PI * variance)); double exponent = -1.0 * (Math.pow(((x - mu)/maxx*xFactor), 2) / (2 * variance)); double ePow = Math.exp(exponent); y = Math.round(cy * root * ePow); points[index][1] = points[index][0]; points[index][0] = (float) (maxy - y - OFFSET); index++; } points[maxx<<1][0] = (float) impact; for (int line = 0; line < points[maxx<<1][1]; line++) { for (int pt = 0; pt < (maxx<<1); pt++) { pointsToPaint[pt] = points[pt][1]; } for (int skip = 1; skip < (maxx<<1); skip = skip + 2) pointsToPaint[skip] = pointsToPaint[skip] + line; myLinePaint.setColor(Color.BLACK); canvas.drawLines(pointsToPaint, bLinePaint); // draw over old lines w/blk } for (int line = 0; line < points[maxx<<1][0]; line++) { for (int pt = 0; pt < maxx<<1; pt++) { pointsToPaint[pt] = points[pt][0]; } for (int skip = 1; skip < maxx<<1; skip = skip + 2) pointsToPaint[skip] = pointsToPaint[skip] + line; myLinePaint.setColor(color); canvas.drawLines(pointsToPaint, myLinePaint); / new color } } update: Replaced the drawLines() with drawPoint() in loop, still no joy for (int p = 0; p<pointsToPaint.length; p = p + 2) { Log.i(DEBUG_TAG, "x " + pointsToPaint[p] + " y " + pointsToPaint[p+1]); canvas.drawPoint(pointsToPaint[p], pointsToPaint[p+1], myLinePaint); } /// canvas.drawLines(pointsToPaint, myLinePaint);

  Read the article

• Is it normal that .Net combobox postback always contains data items?

  - by BlueFox

  I have a dynamically populated ComponentArt:ComboBox with Autopostback property set to true. So every time the selection changes, a postback to server would be fired. Everything seems to work fine except that the lists of all available items are also posted back to the server. from Firebug: ComboBox1_Data %3Cr%3E%3Cc%3E%3Cr%3E%3Cc%3E%3Cr%3E%3Cc%3EText%3C%2Fc%3E%3Cc%3E150%20Mile%20House%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3Cc%3E%3Cr%3E%3Cc%3E%3Cr%3E%3Cc%3EText%3C%2Fc%3E%3Cc%3EAach%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3Cc%3E%3Cr%3E%3Cc%3E%3Cr%3E%3Cc%3EText%3C%2Fc%3E%3Cc%3EAachen%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3Cc%3E%3Cr%3E%3Cc%3E%3Cr%3E%3Cc%3EText%3C%2Fc%3E%3Cc%3EAaheim%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3Cc%3E%3Cr%3E%3Cc%3E%3Cr%3E%3Cc%3EText%3C%2Fc%3E%3Cc%3EAakrehamn%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3Cc%3E%3Cr%3E%3Cc%3E%3Cr%3E%3Cc%3EText%3C%2Fc%3E%3Cc%3EAalbeke%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3Cc%3E%3Cr%3E%3Cc%3E%3Cr%3E%3Cc%3EText%3C%2Fc%3E%3Cc%3EAalen%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3Cc%3E%3Cr%3E%3Cc%3E%3Cr%3E%3Cc%3EText%3C%2Fc%3E%3Cc%3EAalst%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3Cc%3E%3Cr%3E%3Cc%3E%3Cr%3E%3Cc%3EText%3C%2Fc%3E%3Cc%3EAalter%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3Cc%3E%3Cr%3E%3Cc%3E%3Cr%3E%3Cc%3EText%3C%2Fc%3E%3Cc%3E%C3%84%C3%A4nekoski%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3Cc%3E%3Cr%3E%3Cc%3E%3Cr%3E%3Cc%3EText%3C%2Fc%3E%3Cc%3EAarau%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3Cc%3E%3Cr%3E%3Cc%3E%3Cr%3E%3Cc%3EText%3C%2Fc%3E%3Cc%3EAarberg%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3Cc%3E%3Cr%3E%3Cc%3E%3Cr%3E%3Cc%3EText%3C%2Fc%3E%3Cc%3EAarbergen%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3Cc%3E%3Cr%3E%3Cc%3E%3Cr%3E%3Cc%3EText%3C%2Fc%3E%3Cc%3EAarburg%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3Cc%3E%3Cr%3E%3Cc%3E%3Cr%3E%3Cc%3EText%3C%2Fc%3E%3Cc%3EAarebakken%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3Cc%3E%3Cr%3E%3Cc%3E%3Cr%3E%3Cc%3EText%3C%2Fc%3E%3Cc%3EAarschot%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3Cc%3E%3Cr%3E%3Cc%3E%3Cr%3E%3Cc%3EText%3C%2Fc%3E%3Cc%3EAarsele%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3Cc%3E%3Cr%3E%3Cc%3E%3Cr%3E%3Cc%3EText%3C%2Fc%3E%3Cc%3EAartrijke%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3Cc%3E%3Cr%3E%3Cc%3E%3Cr%3E%3Cc%3EText%3C%2Fc%3E%3Cc%3EAartselaar%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3Cc%3E%3Cr%3E%3Cc%3E%3Cr%3E%3Cc%3EText%3C%2Fc%3E%3Cc%3EAavasaksa%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3C%2Fr%3E%3C%2Fc%3E%3C%2Fr%3E ComboBox1_Input Aalst ComboBox1_SelectedIndex 7 As most my clients are using slow connections, this amount of postback has a huge impact on their user experience. Since I'm storing the viewstates in session already, there's really no need for any of the component to restore states from the client. So I'm wondering if this is normal for ComponentArt:ComboBox to do this and not other controls, or this is the normal way of doing things?

  Read the article

• Passing an address inside a WordPress post to a Google Map elsewhere on the Page

  - by ael_ecurai

  Background: My client is building their own WordPress site (using a purchased feature-rich theme), and I'm modifying a child theme as necessary to achieve customizations she wants. The theme comes with a Page template that includes a full-width Google Map across the top, which pulls its marker from a single address set within the Theme Options. It's meant to be used for one main "Contact Us" page. The client's business has several locations, and she wants each location's page to include such a map. (Example linked below.) It seems that the ideal solution would be the ability to specify an address within a shortcode in the Post, and have that set the map marker. Here's how the theme makes the map (where $mapAddress is the address from the Theme Options): <?php $mapAddress = ot_get_option( 'map_address' ); $mapHeight = ot_get_option( 'map_height' ); $mapContent = ot_get_option( 'map_content' ); ?> <section id="block-map-wrapper"> <div id="block-map" class="clearfix"> <script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?sensor=true"></script> <script> jQuery(document).ready(function(){ // Map Options var mapOptions = { zoom: 15, scrollwheel: false, zoomControl: true, zoomControlOptions: { style: google.maps.ZoomControlStyle.SMALL, position: google.maps.ControlPosition.TOP_LEFT }, mapTypeControl: true, scaleControl: false, panControl: false, mapTypeId: google.maps.MapTypeId.ROADMAP }; // The Map Object var map = new google.maps.Map(document.getElementById("map"), mapOptions); var address = ""; var geocoder = new google.maps.Geocoder(); geocoder.geocode({ "address" : "<?php echo $mapAddress; ?>" }, function (results, status) { if (status == google.maps.GeocoderStatus.OK) { address = results[0].geometry.location; map.setCenter(results[0].geometry.location); var marker = new google.maps.Marker({ position: address, map: map, clickable: true, animation: google.maps.Animation.DROP }); var infowindow = new google.maps.InfoWindow({ content: "<?php echo $mapContent; ?>" }); google.maps.event.addListener(marker, "click", function() { infowindow.open(map, marker); }); } }); }); </script> <div id="map" class = "map" style = "width: 100%; height: <?php echo $mapHeight; ?>px"></div> </div><!-- #block-map --> <div class="shadow-bottom"></div> </section><!-- #block-map-wrapper --> Here's a test page using a custom Page template I've created. Right now it's using the same map code as above. I've tried creating a shortcode that takes an address attribute and sets it as $mapAddress, but that didn't work. I believe it's because the map is already loaded by the time the Loop gets parsed. How can I tell Maps to "come back" to the post to get the proper address? My specialty lies in HTML & CSS, but Javascript befuddles me fairly easily, so please be explicit when explaining implementation. Bonus: A further goal is to have the locations' parent Page also include such a map, but have multiple markers representing the multiple locations. When taking more than one location, Google Maps only accepts latitude/longitude. I don't want my client to be concerned with coordinates, so I know there's got to be something I can do with the geocoding service so she can just input a list of addresses instead (into the same, or similar, shortcode solution developed for my main question). But I am extra-clueless about how to do that.

  Read the article

• Get item from spinner into url

  - by ShadowCrowe

  I searched for an answer but couldn't find it. The problem: Depending on the selected spinner-item the application should show a different image. At this moment I can't get it to work. The Url works like this: "my.site.com/images/" imc_met ".png" were imc_met is the filename. I can't get it to work. Btw the app isn't finished yet package example.myapplication; import java.io.IOException; import java.net.MalformedURLException; import java.net.URI; import java.net.URISyntaxException; import java.net.URL; import java.util.ArrayList; import java.util.List; import android.app.Activity; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.os.Bundle; import android.view.Menu; import android.view.View; import android.view.View.OnClickListener; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.ImageView; import android.widget.Spinner; public class itemsActivity extends Activity { private Spinner spinner1, spinner2; private Button btnSubmit; private Bitmap image; private ImageView imageView; private String imc_met, imc; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.items); addItemsOnSpinner2(); addListenerOnButton(); addListenerOnSpinnerItemSelection(); } // add items into spinner dynamically public void addItemsOnSpinner2() { spinner2 = (Spinner) findViewById(R.id.spinner2); List<String> list = new ArrayList<String>(); list.add("list 1"); list.add("list 2"); list.add("list 3"); ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, list); dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); spinner2.setAdapter(dataAdapter); } public void addListenerOnSpinnerItemSelection() { spinner1 = (Spinner) findViewById(R.id.spinner1); spinner1.setOnItemSelectedListener(new CustomOnItemSelectedListener()); } // get the selected dropdown list value public void addListenerOnButton() { spinner1 = (Spinner) findViewById(R.id.spinner1); spinner2 = (Spinner) findViewById(R.id.spinner2); btnSubmit = (Button) findViewById(R.id.btnSubmit); spinner1.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3) { if(spinner1.getSelectedItem()!=null){ imc_met = spinner1.getSelectedItem().toString(); } } @Override public void onNothingSelected(AdapterView<?> arg0) { // TODO Auto-generated method stub } }); imageView = (ImageView)findViewById(R.id.ImageView01); btnSubmit.setOnClickListener(new OnClickListener() { public void onClick(View v) { URL url = null; try { url = new URL("my.site.com"); //here should the right link appear. } catch (MalformedURLException e) { e.printStackTrace(); } try { if (url != null) { image = BitmapFactory.decodeStream(url.openStream()); } } catch (IOException e) { e.printStackTrace(); } imageView.setImageBitmap(image); } }); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } }

  Read the article

• saved image in the picturebox shows no preview

  - by Nivas

  Hi iam new to C# and have loaded the image in the picture box using menustrip and have displayed some text using picturebox_Paint and label. now i tried to save the image (with image and text) using save event from the menustrip. in the saved location the file shows as no preview avaliable and when i tried to open the file it shows out of memory. can any one say where iam going worng.... my coades private void openToolStripMenuItem_Click(object sender, EventArgs e) { string file = ""; OpenFD.FileName = ""; OpenFD.Title = "open image"; OpenFD.InitialDirectory = "C"; OpenFD.Filter = "JPEG|.jpg|Bmp|.bmp|All Files|..*"; if (OpenFD.ShowDialog() == DialogResult.OK) { file = OpenFD.FileName; pictureBox1.Image = Image.FromFile(file); sz = pictureBox1.Size; a=sz.Width; b= sz.Height; } private void pictureBox1_MouseMove(object sender, MouseEventArgs e) { switch (e.Button) { case MouseButtons.Left: { rect = new Rectangle(rect.Left, rect.Top, e.X - rect.Left, e.Y - rect.Top); this.Invalidate(); y = flag.e; Application.DoEvents(); break; } } } private void pictureBox1_MouseDown(object sender, MouseEventArgs e) { rect = new Rectangle(e.X, e.Y, 0, 0); this.Invalidate(); } private void pictureBox1_Paint(object sender, PaintEventArgs e) { using (Pen pen = new Pen(Color.Red, 2)) e.Graphics.DrawRectangle(pen, rect); //e.Graphics.DrawString(label1.Text, label1.Font, new // SolidBrush(label1.ForeColor), label1.Left - pictureBox1.Left, label1.Top - pictureBox1.Top); if (label1.TextAlign == ContentAlignment.TopLeft) { e.Graphics.DrawString(label1.Text, label1.Font, new SolidBrush(label1.ForeColor), label1.Bounds); } else if (label1.TextAlign == ContentAlignment.TopCenter) { SizeF size = e.Graphics.MeasureString(label1.Text, label1.Font); float left = ((float)this.Width + label1.Left) / 2 - size.Width / 2; RectangleF rect1 = new RectangleF(left, (float)label1.Top, size.Width, label1.Height); e.Graphics.DrawString(label1.Text, label1.Font, new SolidBrush(label1.ForeColor), rect1); } else { SizeF size = e.Graphics.MeasureString(label1.Text, label1.Font); float left = (float)label1.Width - size.Width + label1.Left; RectangleF rect1 = new RectangleF(left, (float)label1.Top, size.Width, label1.Height); e.Graphics.DrawString(label1.Text, label1.Font, new SolidBrush(label1.ForeColor), rect1); } label1.Top = rect.Top; label1.Left = rect.Left; label1.Width = rect.Width; label1.Height = rect.Height; } private void saveToolStripMenuItem_Click(object sender, EventArgs e) { SaveFileDialog SaveFD1 = new SaveFileDialog(); //string Sd_file = ""; SaveFD1.FileName = ""; SaveFD1.InitialDirectory = "C"; SaveFD1.Title = "save file Name"; SaveFD1.Filter= "JPG|.jpg|Bmp|.bmp"; if (SaveFD1.ShowDialog() != DialogResult.Cancel) { System.IO.Stream filename = (System.IO.FileStream)SaveFD1.OpenFile(); if (SaveFD1.Filter == "JPG") pictureBox1.Image.Save(SaveFD1.FileName); //pictureBox1.Image.Save (filename, System.Drawing.Imaging.ImageFormat.Jpeg); else if (SaveFD1.Filter == "Bmp") { //pictureBox1.Image.Save(filename, System.Drawing.Imaging.ImageFormat.Bmp); } filename.Close(); } }

  Read the article

< Previous Page | 415 416 417 418 419 420 421 422 423 424 425 426  | Next Page >