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  • "ztemtvcdromd: no process found" when removing crossplatformui

    - by ekaki.sam
    When I am doing sudo apt-get update or sudo apt-get install (any software) then this is showing in terminal Extracting templates from packages: 100% (Reading database ... 146237 files and directories currently installed.) Removing crossplatformui ... ztemtvcdromd: no process found dpkg: error processing crossplatformui (--remove): subprocess installed post-removal script returned error exit status 1 Errors were encountered while processing: crossplatformui E: Sub-process /usr/bin/dpkg returned an error code (1)

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  • How to texture voxel terrain without triplanar texturing?

    - by Thelvyn
    How can a voxel terrain (marching cubes) be textured without triplanar mapping ? The goal being to have more artistic freedom. I think, I could unwrap the mesh while extracting the isosurface then use projective painting. But I do not know how to handle terrain modifications without breaking the texture. I also guess that virtual texturing could help here. Links for these matters would be appreciated.

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  • How can I perform sentiment analysis on extracted text from online sources?

    - by aniket69
    I'm working on extracting the sentiment from YouTube comments, blogs, news content, Facebook wall posts, and Twitter feeds. I'm looking for an automated way to do this: the two third-party solutions I've found have been AlchemyAPI and RapidMiner. Are these the best way to approach this project, or should I be using something else? Is there a more efficient way to approach sentiment analysis? What techniques have worked for you in a project like this?

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  • Can not install Netbeans after upgrade version Ubuntu from 12.04 to 12.10

    - by Kannika
    This is message error from Terminal : coca@Bakorng:/var/www/shared$ sh netbeans-7.2-ml-php-linux.sh Configuring the installer... Searching for JVM on the system... Extracting installation data... Running the installer wizard... Can`t initialize UI Running in headless mode Exception: java.awt.HeadlessException thrown from the UncaughtExceptionHandler in thread "main" coca@Bakorng:/var/www/shared$ How to fixed this?

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  • How to Smooth the drawing Stroke?

    - by user1852420
    I am creating drawing.. i can undo, and put colors on it. but when i draw using my fingers the stroke is not that smooth and has edge lines,, here my codes. on which I can Paint on a view, Undo, change color, and the opacity. stroke.h #import <UIKit/UIKit.h> @interface stroke : UIView{ NSMutableArray *strokeArray; UIColor *strokeColor; int strokeSize; float strokeAlpha; int strokeAlpha2; IBOutlet UISlider *slides; float red; float green; float blue; CGPoint mid1; CGPoint mid2; CGPoint endingPoint,previousPoint1,previousPoint2; CGPoint currentTouch; } @property (nonatomic, retain) UIColor *strokeColor; @property (nonatomic) int strokeSize; @property (nonatomic, retain) NSMutableArray *strokeArray; - (IBAction)changeAlphaValue; -(void)loadSLider; -(void)blueColor; -(void)darkvioletColor; -(void)violetColor; -(void)pinkColor; -(void)darkbrownColor; -(void)redColor; -(void)magentaRedColor; -(void)lightBrownColor; -(void)lightOrangeColor; -(void)OrangeColor; -(void)YellowColor; -(void)greenColor; -(void)lightYellowColor; -(void)darkGreenColor; -(void)TurquioseColor; -(void)PaleTurquioseColor; -(void)skyBlueColor; -(void)whiteColor; -(void)DirtyWhiteColor; -(void)SilverColor; -(void)LightGrayColor; -(void)GrayColor; -(void)LightBlackColor; -(void)BlackColor; @end stroke.m #import "stroke.h" @implementation stroke @synthesize strokeColor; @synthesize strokeSize; @synthesize strokeArray; - (void) awakeFromNib{ self.strokeArray = [[NSMutableArray alloc] init]; self.strokeColor = [UIColor colorWithRed:0 green:0 blue:232 alpha:1]; self.strokeSize = 3; } - (void)drawRect:(CGRect)rect{ NSMutableArray *stroke; for (stroke in strokeArray) { CGContextRef contextRef = UIGraphicsGetCurrentContext(); CGContextSetLineWidth(contextRef, [[stroke objectAtIndex:1] intValue]); CGFloat *color = CGColorGetComponents([[stroke objectAtIndex:2] CGColor]); CGContextSetRGBStrokeColor(contextRef, color[0], color[1], color[2], color[3]); CGContextBeginPath(contextRef); CGPoint points[[stroke count]]; for (NSUInteger i = 3; i < [stroke count]; i++) { points[i-3] = [[stroke objectAtIndex:i] CGPointValue]; } CGContextAddLines(contextRef, points, [stroke count]-3); CGContextStrokePath(contextRef); } } -(void)loadSLider{ } - (IBAction)changeAlphaValue{ strokeAlpha2 =((int)slides.value); } -(void)blueColor{ red = 0/255.0; green = 0/255.0; blue = 255/255.0; } -(void)darkvioletColor{ red = 75/255.0; green = 0/255.0; blue = 130/255.0; } -(void)violetColor{ red = 128/255.0; green = 0/255.0; blue = 128/255.0; } -(void)pinkColor{ red = 255/255.0; green = 0/255.0; blue = 255/255.0; } -(void)darkbrownColor{ red = 0.200; green = 0.0; blue = 0.0; } -(void)redColor{ red = 255/255.0; green = 0/255.0; blue = 0/255.0; } -(void)magentaRedColor{ red = 0.350; green = 0.0; blue = 0.0; } -(void)lightBrownColor{ red = 0.480; green = 0.0; blue = 0.0; } -(void)lightOrangeColor{ red = 0.600; green = 0.200; blue = 0.0; } -(void)OrangeColor{ red = 1.0; green = 0.300; blue = 0.0; } -(void)YellowColor{ red = 0.950; green = 0.450; blue = 0.0; } -(void)greenColor{ red = 0.0; green = 1.0; blue = 0.0; } -(void)lightYellowColor{ red = 1.0; green = 1.0; blue = 0.0; } -(void)darkGreenColor{ red = 0.0; green = 0.500; blue = 0.0; } -(void)TurquioseColor{ red = 0.0; green = 0.700; blue = 0.200; } -(void)PaleTurquioseColor{ red = 0.0; green = 0.700; blue = 0.600; } -(void)skyBlueColor{ red = 0.0; green = 0.400; blue = 0.800; } -(void)whiteColor{ red = 1.0; green = 1.0; blue = 1.0; } -(void)DirtyWhiteColor{ red = 0.800; green = 0.800; blue = 0.800; } -(void)SilverColor{ red = 0.600; green = 0.600; blue = 0.600; } -(void)LightGrayColor{ red = 0.500; green = 0.500; blue = 0.500; } -(void)GrayColor{ red = 0.300; green = 0.300; blue = 0.300; } -(void)LightBlackColor{ red = 0.150; green = 0.150; blue = 0.150; } -(void)BlackColor{ red = 0.0; green = 0.0; blue = 0.0; } - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *touch; NSEnumerator *counter = [touches objectEnumerator]; while ((touch = (UITouch *)[counter nextObject])) { switch (strokeAlpha2) { case 1: strokeAlpha = .1; break; case 2: strokeAlpha = .2; break; case 3: strokeAlpha = .3; break; case 4: strokeAlpha = .4; break; case 5: strokeAlpha = .5; break; case 6: strokeAlpha = .6; break; case 7: strokeAlpha = .7; break; case 8: strokeAlpha = .8; break; case 9: strokeAlpha = .9; break; case 10: strokeAlpha = 1; break; default: strokeAlpha = 1; break; } self.strokeColor = [UIColor colorWithRed:red green:green blue:blue alpha:strokeAlpha]; NSValue *touchPos = [NSValue valueWithCGPoint:[touch locationInView:self]]; UIColor *color = [UIColor colorWithCGColor:strokeColor.CGColor]; NSNumber *size = [NSNumber numberWithInt:strokeSize]; NSMutableArray *stroke = [NSMutableArray arrayWithObjects: touch, size, color, touchPos, nil]; [strokeArray addObject:stroke]; } } - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { UITouch *touch; NSEnumerator *counter = [touches objectEnumerator]; while ((touch = (UITouch *)[counter nextObject])) { NSMutableArray *stroke; for (stroke in strokeArray) { if ([stroke objectAtIndex:0] == touch) { [stroke addObject:[NSValue valueWithCGPoint:[touch locationInView:self]]]; } [self setNeedsDisplay]; } } } @end

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  • Archive software for big files and fast index

    - by AkiRoss
    I'm currently using tar for archiving some files. Problem is: archives are pretty big, contains many data and tar is very slow when listing and extracting. I often need to extract single files or folders from the archive, but I don't currently have an external index of files. So, is there an alternative for Linux, allowing me to build uncompressed archive files, preserving the file attributes AND having fast access list table? I'm talking about archives of 10 to 100 GB, and it's pretty impractical to wait several minutes to access a single file. Anyway, any trick to solve this problem is welcome (but single archives are non-optional, so no rsync or similar). Thanks in advance! EDIT: I'm not compressing archives, and using tar I think they are too slow. To be precise about "slow", I'd like that: listing archive content should take time linear in files count inside the archive, but with very little constant (e.g. if a list of all the files is included at the head of the archive, it could be very fast). extraction of a target file/directory should (filesystem premitting) take time linear with the target size (e.g. if I'm extracting a 2MB PDF file in a 40GB directory, I'd really like it to take less than few minutes... If not seconds). Of course, this is just my idea and not a requirement. I guess such performances could be achievable if the archive contained an index of all the files with respective offset and such index is well organized (e.g. tree structure).

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  • ssl certificate for www.domain.com and domain.com

    - by user12145
    I used make-dummmy-cert that comes with apache 2.2 and ssl_mod to make a self-signed certificate, I tried www.domain.com domain.com *.domain.com, none of them would work for both www.domain.com and domain.com. The browser would say The certificate is only valid for domain.com( or www.domain.com or *.domain.com respectively) how do I make a self-signed cert that would work for both cases?

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  • Error upgrading Ubuntu server from Intrepid to Jaunty

    - by Martin
    I'm trying to upgrade an old ubuntu server from 8.10 (Intrepid) to 9.04 (Jaunty). But it fails. root@server1:/# do-release-upgrade Checking for a new ubuntu release Failed Upgrade tool signature Failed Upgrade tool Done downloading extracting 'jaunty.tar.gz' Failed to extract Extracting the upgrade failed. There may be a problem with the network or with the server. Does anyone have an idea why I get this error and how to fix it? UPDATE: I think i might have tracked the problem down. My /etc/update-manager/meta-release looks like this: [METARELEASE] URI = http://changelogs.ubuntu.com/meta-release URI_LTS = http://changelogs.ubuntu.com/meta-release-lts URI_UNSTABLE_POSTFIX = -development URI_PROPOSED_POSTFIX = -proposed If i go to http://changelogs.ubuntu.com/meta-release it has this info for Jaunty: Dist: jaunty Name: Jaunty Jackalope Version: 9.04 Date: Thu, 23 Apr 2009 12:00:00 UTC Supported: 0 Description: This is the 9.04 release Release-File: http://archive.ubuntu.com/ubuntu/dists/jaunty/Release ReleaseNotes: http://changelogs.ubuntu.com/EOLReleaseAnnouncement UpgradeTool: http://archive.ubuntu.com/ubuntu/dists/jaunty-proposed/main/dist-upgrader-all/0.111.8/jaunty.tar.gz UpgradeToolSignature: http://archive.ubuntu.com/ubuntu/dists/jaunty-proposed/main/dist-upgrader-all/0.111.8/jaunty.tar.gz.gpg Those links starting with archive.ubuntu.com are broken since jaunty is EOL. I guess i could fix this by copying this file, replacing "archive" with "old-releases", host the modified file somewhere and change the url in the meta-release file. Is this a good solution or will it make me run into worse problems?

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  • Custom MS-DOS / FreeDOS

    - by user1801387
    Goal : Build a custom DOS to boot into. To automate tasks like formating a drive, or doing recovery. I've been using Grub4DOS to boot into these images. So far I've looking into taking a windows repair disk ISO and extracting. I can't seem to find the autoexec.bat in the disk. I really don't know where to look for the startup configuration file to change or how to add an autoexec.bat. I've tried MS-DOS 6.22. But it lacks the diskpart tool I require. I've tried extracting the images and adding it. Then I got a boot failed. I assume that after i added it. All the files when to lower case names and I assume that the OS is case sensitive. Then I've looking into using FreeDOS. But I don't know how it works at all. Partially because I can't seem to grasp the help/wiki's information. I looked into getting a bearbones release with just the kernel and I think it's the config.sys file. But I don't have any idea on how the packaging system works to incorporate diskpart into it. So really I'm in general looking for a small bootable DOS to where I can incorporate diskpart and setup an autoexec.bat for the actual function to carry out and to boot into. Thanks :) This is just for personal use also.

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  • Is adding users to the group www-data safe on Debian?

    - by John
    Many PHP applications do self-configuration and self-updating. This requires apache to have write access to the PHP files. While chgrp'ing them all to www-data appears like a good practice to avoid making them world writable, I also wish to allow users to create new files and edit existing one. Is adding users to the group www-data safe on Debian? For example: 775 root www-data /var/www 644 john www-data /var/www/johns_php_application.php 660 john www-data /var/www/johns_php_applications_configuration_file

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  • Extract a section of a tgz file

    - by TRiG
    I have a 28.5 GB .tgz file which was created on the command line of a Linux computer, compressing one folder and all its many many subfolders. I now want to extract a single sub-sub folder from that .tgz file, using 7zip on Windows Vista. I can't see a way to do it. Opening the .tgz file in 7zip just shows the .tar file inside it. There doesn't seem to be any way to browse that .tar file and extract the section I want. I assume there is a way to do this, but I can't see it. Simply double-clicking on the .tar file brings up a progress bar which runs slowly till my computer complains it's running out of space; I imagine it's trying to extract the whole thing. Searching for "extract section of tgz" and "extract tgz subfolder" and similar found me a way to do it on the Linux command line, but no obvious way to do it on Windows. (Most results found were about extracting into a subfolder, not extracting a subfolder out of the archive.)

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  • How may I monitor all gestures of the entire system

    - by Jiulong Zhao
    I can make a view to accept touch event and receive detailed gesture event like this: [self setAcceptsTouchEvents:YES]; // NSSet *touches = [event touchesMatchingPhase:NSTouchPhaseBegan inView:self]; I can also receive global event by crate a monitor in this way: NSUInteger eventMasks = NSEventTypeBeginGesture | NSEventTypeEndGesture | NSEventMaskGesture; [NSEvent addGlobalMonitorForEventsMatchingMask:eventMasks handler:^(NSEvent *theevent) {//do something}]; But I can NOT get the detailed event from monitor by -touchesMatchingPhase How may I monitor all gestures of the entire system.

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  • Can ping between Host and Guest, but can't acces webserver with Virtualbox

    - by Gastoni
    How come I can ping back and forth between host and guest using VirtualBox, but I can't access from the host the web server installed in the guest. I'm using a host-only network. Host Ubuntu 10.10 vboxnet0 - 192.168.56.1 ping to self, works ping to guest, works access to web server in guest, FAILS Guest Fedora 13 eth1 - 192.168.56.101 ping to self, works ping to host, works access to web server in host, works

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  • moving files and directories between two machine, via a third, preserving permissions and usernames

    - by Jarmund
    The situation is as follows: Machine A has a file repository accessible via rsync Machine B needs the above mentioned files with all permissions and ownerships intact (including groups etc) Machine C has access to both A and B, but has a completely different set of users. Normally, i would just rsync everything over, directly between A and B, but due to severely limited bandwidth at the moment, i need something different, as rsync times out after building the list of the 430 files (49Mb uncompressed... can be compressed down to ~7Mb). What i've tried so far: rsync everything over from A to C, tar it, copy the tarball over, and then untar it, however, this messes up the ownership and/or the permissions. To rsync it from A to C, i run this command: rsync --numeric-ids --password-file=/root/rsync_pwd_file -oaPvu rsync://[email protected]/portal_2/ ./portal_2/ ...and from the looks of things, they do end up on C with the correct ownerships/permissions/flags/everything (not 100% sure, though.. are there any more switches i can throw in there? did i miss something?) copying the tarball over is simple enough (slow as a one-legged turtle due to the bandwidth, but it checksums out alright) What i'm unsure of is the flags and switches for creating and extracting the tarball, so could someone please provide the full commands for creating a tarball from /root/portal_2 on machine C (with everything intact) and extracting the tarball into /var/ex/portal_2 on machine B? ? Also, are there any other approaches worth mentioning that could allow me to perform this? I have root access to A and C, whereas i only have rsync access to B. PS: I'm running rsync v2.6.9 on machine B, and unfortunately i do not have the oportunity to upgrade to v3

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  • Installing mysql-server with python ssh connection

    - by mrbox
    I'm writing a script in Python, which is connecting to server via ssh, then installing some packages. But there is problem with dialogue box, where i can type in a root password- i don't know how to send data there. Once I tried to do this, my apt(using Debian Lenny) gone crazy. Here is some info: - Debian Lenny - Using PySSH with easier interface, code looks like this: clientSSH = SSHClient( self.ip, 'root', self.rootPassword, None ) clientSSH.login() clientSSH.run_command('apt-get install mysql-server mysql-client php5') clientSSH.run_command('Y') #I Don't know how send root passwd here clientSSH.logout()

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  • How (in terms of which parameters) is a "professional-grade" broadband connection different from a "consumer" one?

    - by odemarken
    By "professional" I mean here: The kind you can get at a datacenter for your server The kind you can get at an office that would be good enough for hosting web and mail server with low to medium traffic. (Please ignore other aspects of "the self-hosting problem" and focus only on broadband connection quality). Another way to frame this question would be "what parameters should office broadband have to compare to a datacenter-provided one for the purposes of self-hosting". The knowledge I have gathered so far is in answer format below.

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  • Application tried to present modally an active controller ios

    - by Matthew
    I was trying to set the ViewController with a parent view controller before it shows show that it can provide call backs, I done this using PrepareForSegue - (void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender { if ([segue.identifier isEqualToString:@"newQuarter"]) { [segue.destinationViewController setParentViewController:self]; } } It crashed giving me the error message: Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Application tried to present modally an active controller. So I tried using another method and set up a new view controller on the button touches up, - (IBAction) buttonClicked { NewViewController *newController = [[NewViewController alloc] init]; [newController setParentViewController:self]; [self presentViewController:newController animated:YES completion:nil]; } but with no luck it is still giving me the same error message, can anyone please advice? Thanks!

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  • Ipad UIImagePickerController and UIPopoverController error

    - by nishantcm
    Hi, I am using this code to open a popover with imagepicker -(IBAction)photosAction:(id)sender { // dismiss any left over popovers here UIImagePickerController* picker = [[UIImagePickerController alloc] init]; picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; picker.delegate = self; UIPopoverController *popover = [[UIPopoverController alloc] initWithContentViewController:picker]; self.popoverController = popover; popoverController.delegate = self; [popoverController presentPopoverFromBarButtonItem:sender permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES]; [picker release]; But this results in this error request for member 'popoverController' in something not a structure or union and this error 'popoverController' undeclared (first use in this function). Also I want to dismiss the popover when the image is selected. What code should I put in the following function to dismiss the popover once the image is selected. (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { Thanks for the help!

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  • getting at a UIButton with the tag property IPhone

    - by dubbeat
    Hey There, I'm having a little trouble using the tag property to access a UIButton UIButton *randomButton = [[UIButton buttonWithType:UIButtonTypeRoundedRect ]retain]; randomButton.frame = CGRectMake(205, 145, 90, 22); // size and position of button [randomButton setTitle:@"Random" forState:UIControlStateNormal]; randomButton.backgroundColor = [UIColor clearColor]; randomButton.adjustsImageWhenHighlighted = YES; [randomButton addTarget:self action:@selector(getrandom:) forControlEvents:UIControlEventTouchUpInside]; randomButton.reversesTitleShadowWhenHighlighted=YES; randomButton.toggleButton [self.view addSubview:randomButton]; [randomButton release]; randomButton.tag=333; Then later on in code I try to get at the button in the following manner which gives me an error saying Incompatible Objective-C types initializing 'struct UIView *', expected 'struct UIButton *' UIButton *random = [self.view viewWithTag:333]; random.highlighted=NO;

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  • NSLock deadlock

    - by twinkle
    I have an instance variable in class Foo @property (nonatomic, retain) NSLock *mLock; initialized as: self.mLock=[NSLock new]; Foo also has -(void)getLock { while (![self.mLock tryLock]) { NSLog(@"Trying to lock... sleep(1)"); sleep(1); } NSLog(@">>>>>>> Acquiring LOCK"); [self.mLock lock]; NSLog(@">>>>>>> LOCK acquired"); } From another method in the Foo class, I call [Foo getLock]. This immediately results in a deadlock. Log below: 2010-03-18 07:06:01.660 test[9816:207] >>>>>>> Acquiring LOCK 2010-03-18 07:06:01.665 test[9816:207] *** -[NSLock lock]: deadlock (<NSLock: 0x3c0f820> '(null)') 2010-03-18 07:06:01.666 test[9816:207] *** Break on _NSLockError() to debug. Thanks!

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  • WPF - simple relative path - FindAncestor

    - by user309392
    In the XAML below the ToolTip correctly binds to RelativeSource Self. However, I can't for the life of me work out how to get the TextBlock in the commented block to refer to SelectedItem.Description <Controls:RadComboBoxWithCommand x:Name="cmbPacking" Grid.Row="2" Grid.Column="5" ItemsSource="{Binding PackingComboSource}" DisplayMemberPath="DisplayMember" SelectedValuePath="SelectedValue" SelectedValue="{Binding ElementName=dataGrid1, Path=SelectedItem.PackingID}" ToolTip="{Binding RelativeSource={RelativeSource Self}, Path=SelectedItem.Description}" IsSynchronizedWithCurrentItem="True" Style="{StaticResource comboBox}"> <!-- <Controls:RadComboBoxWithCommand.ToolTip>--> <!-- <TextBlock Text="{Binding RelativeSource={RelativeSource Self}, Path=SelectedItem.Description}" TextWrapping="Wrap" Width="50"/>--> <!-- </Controls:RadComboBoxWithCommand.ToolTip>--> </Controls:RadComboBoxWithCommand> I would appreciate any suggestions Thanks - Jeremy

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  • video player with qt phonon (using python)

    - by cppb
    hi, I am working on Windows xp and am trying to get a simple video player running. I am trying to use Phonon::VideoPlayer module for this. I am connecting the signal as connect(self.player,SIGNAL("finished()"),self.player.deleteLater) and then , when the Play button is pressed, it makes the following call: self.player.play(Phonon.MediaSource("C:\vid.mp4")) But, this doesn't display the video in the video player widget. Neither can I hear audio. Can anyone help?? I tried using different video file formats but no luck.

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  • Showing Master/Detail UITableView inside UIPopOverController

    - by tilomitra
    I have a UIPopOverController that shows a UIViewController with a UITableview in its view. The cells in the table have a detailedView, but whenever that view gets pushed, the PopOverController increases in size, and I am left with all this white space inside it. Question is this: Can anyone show me how I can have a Master/Detail UITableview show inside a PopOverController whilst preserving its dimensions? Some of my code if it helps you: //Creating the PopOver with the UIViewController addTaskViewController = [[AddTaskViewController alloc] initWithNibName:@"AddTaskViewController" bundle:nil]; UINavigationController *addTaskNavController = [[UINavigationController alloc] initWithRootViewController:addTaskViewController]; UIPopoverController *addTaskPopOver = [[UIPopoverController alloc] initWithContentViewController:addTaskNavController]; self.addTaskPopOverController = addTaskPopOver; addTaskPopOverController.delegate = self; //...neccessary releases... //Showing the popover when a button is pressed - (void) addTasksButtonPressed:(id)sender { //Display the Popover containing a view from AddTaskViewController [self.addTaskPopOverController setPopoverContentSize:CGSizeMake(400, 700)]; [addTaskPopOverController presentPopoverFromBarButtonItem:sender permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES]; }

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  • iPhone Gameloop render update from a separate thread

    - by Rich
    Hi, I'm new to iPhone development. I have a game loop setup as follows. (void)CreateGameTick:(NSTimeInterval) in_time { [NSThread detachNewThreadSelector:@selector(GameTick) toTarget:self withObject:nil]; } My basic game tick/render looks like this (void)GameTick { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; CGRect wrect = [self bounds]; while( m_running ) { [self drawRect: wrect]; } [pool release]; } My render function gets called. However nothing gets drawn (I am using Core Graphics to draw some lines on a derived UIView). If I call my update via a timer then all is well and good. Can you tell me why the render fails when done via threads? And is it possible to make it work via threads? Thanks Rich

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  • Simple python oo issue

    - by Alex K
    Hello, Have a look a this simple example. I don't quite understand why o1 prints "Hello Alex" twice. I would think that because of the default self.a is always reset to the empty list. Could someone explain to me what's the rationale here? Thank you so much. class A(object): def __init__(self, a=[]): self.a = a o = A() o.a.append('Hello') o.a.append('Alex') print ' '.join(o.a) # >> prints Hello Alex o1 = A() o1.a.append('Hello') o1.a.append('Alex') print ' '.join(o1.a) # >> prints Hello Alex Hello Alex

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