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• Special case when calling InvokeScript with the winforms WebBrowser control does not work

  - by wang-min

  I am trying to use InvokeScript method on the WebBrowser control to execute a script on the web page that has been loaded into my WebBrowser control. If I am calling just a simple javascript function, this works properly. However, the javascript function that I am trying to call is nested within a variable like this: var holder = { DoA: function() { .... }, DoB: function() { ..... } } Calling holder.DoA works fine when called from within the javascript, but the function is not called successfully when I try to call it from within my C# code like this: object obj1 = m_webBrowser.Document.InvokeScript("holder.DoA"); Any ideas?

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• playing only part of a sound using FMOD

  - by carneades

  I'm trying to play only part of a sound using FMOD, say frames 50000-100000 of a 200000 frame file. I have found a couple of ways to seek forward (i.e. to start playback at frame 50000) but I have not found a way to make sure the sound stops playing at 100000. Is there any way FMOD can natively do this without having to add lbsndfile or the like into the picture? I should also mention that I am using the streaming option. I have to assume that these sounds are arbitrarily large and cannot be comfortably/quickly loaded into memory.

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• How load text into JavaStackTraceConsolePage programmatically?

  - by Marcel

  In my Eclipse plugin I'd like to send a Java console output (loaded from some other system) to the Java Stack Trace Console. I pseudo-code it'd be something like: get the console output from the other system obtain a reference to a JavaStackTraceConsolePage instance send the text to the console page display the console i.e. switch from my plugin's view to the Console view Step 1 is easy as it is specific to my plugin. As for the rest I'm pretty much clueless - Google and stackoverflow.com don't come up with useful references or how-tos. Since the class JavaStackTraceConsolePage is part of an internal Eclipse API (org.eclipse.jdt.internal.debug.ui.console) I'm not even sure whether it's doable at all.

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• xapian-full installed on mac os x snow leopard but failed with dlopen LoadError

  - by goodwill

  Since I have tried to install xapian but failed, I try another alternative with xapian-full. Installation seems goes well, but when I try to write code with that I got toasted with error message again: irb(main):001:0> require 'xapian' LoadError: dlopen(/opt/ruby-enterprise/lib/ruby/gems/1.8/gems/xapian-full-1.1.3.4/lib/_xapian.bundle, 9): Library not loaded: /usr/local/lib/libxapian-1.1.3.dylib Referenced from: /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/xapian-full-1.1.3.4/lib/_xapian.bundle Reason: image not found - /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/xapian-full-1.1.3.4/lib/_xapian.bundle from /opt/ruby-enterprise/lib/ruby/gems/1.8/gems/xapian-full-1.1.3.4/lib/_xapian.bundle from /opt/ruby-enterprise/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in `require' from /opt/ruby-enterprise/lib/ruby/site_ruby/1.8/xapian.rb:40 from /opt/ruby-enterprise/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require' from /opt/ruby-enterprise/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require' from (irb):1 Anyone know how to solve this?

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• Accessing a VSTO application-addin types from VBA (Excel)

  - by Kang Su

  We have a VSTO application-addin (not a document-addin) for Excel, and we want to expose an event to VBA code so that the VBA macro can do some action when this event fires in the addin. How can I get the VBA code to be able to subscribe to an event defined in the VSTO application-addin? I'd think that since the addin is loaded in the Excel process, this shouldn't be too tricky, but haven't found a way yet. BTW, using VS 2008 and Excel 2007. Thanks!

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• How do I free SQLServerCE's COM instance from the current running process?

  - by David Thornley

  It's been a while since I touched COM so be nice ;) This is under WindowsCE 5.0 with SQLServerCE 2.0. After calling this to load SQLServerCE 2.0 : - IDBInitialize *pIDBInitialize = NULL; CoCreateInstance(CLSID_SQLSERVERCE_2_0, NULL, CLSCTX_INPROC_SERVER, IID_IDBInitialize, (void**)&pIDBInitialize); Module load occurs for SSCE20.dll which obviously loads the SQLServerCE engine into the process space. What I don't understand is if I do this immediately after :- pIDBInitialize->Release(); I don't see a dll module unload, so that SSCE20.dll (and friends) are still loaded into my process. Now I tried CoFreeUnusedLibraries() which I figure forces COM to purge any unused libraries, but it doesn't seem to do the trick. At runtime I want to be able to completely unload the SQLServerCE 2.0 dll from the process to streamline an upgrade to 3.5SP1. I suspect this has something to do with the shared dll model that Microsoft use under WindowsCE... but, I might be wrong :) Thanks in advance, David.

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• How should I load a xib into a detail view for a split view iPad objective app?

  - by editor

  I've got a split view iPad app with table view in the master pane. After drilling down several levels, each time loading a new .xib, I'd like one of the cells to trigger a web page load in the detail pane. Right now I can only get the web page .xib to load in the master pane side -- which is a master pain in my side. The basic load call where "URLWindow" is a class loaded with initWithNibName: [[self navigationController] pushViewController:URLWindow animated:YES]; I want to do this, but it doesn't seem to work: @interface @property (nonatomic, retain) IBOutlet DetailViewController *detailViewController; ... @implementation [[self detailViewController] pushViewController:URLWindow animated:YES]; How should I be loading the URLWindow .xib into a detail view for a split view detail pane?

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• SSRS Email Subscription

  - by Lijo

  Hi Team, I have an report to be sent in email using SSRS 2005. I have created subscription through C# code, some time back. It used to send emails successfully. Now, it does not send. There is a message as "The delivery extension for this subscription could not be loaded." [The report is rendering properly when I try with Report Manager.] What all are the possible reasons for this? Please help... Thanks Lijo

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• GWT 2.X No resource found for key

  - by Han Fastolfe

  I've developed a GWT app using i18n internationalization. In Host/Dev mode it works fine, but launching GWT compile gives this error: No resource found for key xxx, like below. Compiling module ...rte.RTE Scanning for additional dependencies: file:/home/.../client/i18n/RTEValidationMessages.java Computing all possible rebind results for '...client.i18n.RTEMessages' Rebinding ...client.i18n.RTEMessages Invoking com.google.gwt.dev.javac.StandardGeneratorContext@e7dfd0 Processing interface ...client.i18n.RTEMessages Generating method body for txtIndirizzo3() [ERROR] No resource found for key 'txtIndirizzo3' Messages are loaded with late binding. public class RTEValidationMessages { private RTEMessages additionalMessages; public RTEValidationMessages() { additionalMessages = GWT.create(RTEMessages.class); } } Deleting the method which gives the error, results in another random method with error, say not the method before or after in the interface ...client.i18n.RTEMessages. Help is greatly appreciated.

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• Why is Apache seg faulting?

  - by Jamie Howard

  We have a production server that seems to Seg Fault a few times every day. The fault is picked up by Apache and logged in the error log - but there seems to be no traffic around the time. If it's a request generating the fault then it looks like it happens before any other logging is made so I can't see how it's happening so it's very hard to debug. Our setup is Linux 64 bit Centos 5.3 Apache is loaded with the following modules apachectl -t -D DUMP_MODULES | more Loaded Modules: core_module (static) mpm_prefork_module (static) http_module (static) so_module (static) auth_basic_module (shared) auth_digest_module (shared) authn_file_module (shared) authn_alias_module (shared) authn_anon_module (shared) authn_dbm_module (shared) authn_default_module (shared) authz_host_module (shared) authz_user_module (shared) authz_owner_module (shared) authz_groupfile_module (shared) authz_dbm_module (shared) authz_default_module (shared) ldap_module (shared) authnz_ldap_module (shared) include_module (shared) log_config_module (shared) logio_module (shared) env_module (shared) ext_filter_module (shared) mime_magic_module (shared) expires_module (shared) deflate_module (shared) headers_module (shared) usertrack_module (shared) setenvif_module (shared) mime_module (shared) dav_module (shared) status_module (shared) autoindex_module (shared) info_module (shared) dav_fs_module (shared) vhost_alias_module (shared) negotiation_module (shared) dir_module (shared) actions_module (shared) speling_module (shared) userdir_module (shared) alias_module (shared) rewrite_module (shared) proxy_module (shared) proxy_balancer_module (shared) proxy_ftp_module (shared) proxy_http_module (shared) proxy_connect_module (shared) cache_module (shared) suexec_module (shared) disk_cache_module (shared) file_cache_module (shared) mem_cache_module (shared) cgi_module (shared) version_module (shared) security2_module (shared) unique_id_module (shared) fcgid_module (shared) php5_module (shared) proxy_ajp_module (shared) ssl_module (shared) Here's an exert from the Apache error log: [Mon Mar 15 06:39:25 2010] [error] [client 213.246.222.74] client sent HTTP/1.1 request without hostname (see RFC2616 section 14.23): /w00tw00t.at.ISC.SANS.DFind:) [Mon Mar 15 07:41:31 2010] [error] [client 213.246.222.74] client sent HTTP/1.1 request without hostname (see RFC2616 section 14.23): /w00tw00t.at.ISC.SANS.DFind:) [Mon Mar 15 08:24:16 2010] [error] [client 67.19.250.146] client sent HTTP/1.1 request without hostname (see RFC2616 section 14.23): /w00tw00t.at.ISC.SANS.DFind:) [Mon Mar 15 08:43:46 2010] [error] [client 213.246.222.74] client sent HTTP/1.1 request without hostname (see RFC2616 section 14.23): /w00tw00t.at.ISC.SANS.DFind:) [Mon Mar 15 08:54:02 2010] [error] [client 74.208.123.71] client sent HTTP/1.1 request without hostname (see RFC2616 section 14.23): /w00tw00t.at.ISC.SANS.DFind:) [Mon Mar 15 09:09:51 2010] [notice] child pid 2138 exit signal Segmentation fault (11), possible coredump in /tmp [Mon Mar 15 09:45:27 2010] [error] [client 213.246.222.74] client sent HTTP/1.1 request without hostname (see RFC2616 section 14.23): /w00tw00t.at.ISC.SANS.DFind:) [Mon Mar 15 09:49:05 2010] [error] [client 190.12.113.196] File does not exist: /var/www/vhosts/default/htdocs/phpMyAdmin [Mon Mar 15 09:49:06 2010] [error] [client 190.12.113.196] File does not exist: /var/www/vhosts/default/htdocs/PMA And the Access log around the same time (09:09:51): 213.246.222.74 - - [15/Mar/2010:08:43:46 +0000] "GET /" 400 561 "-" "-" 208.80.193.28 - - [15/Mar/2010:08:52:20 +0000] "GET / HTTP/1.0" 301 313 "-" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; SU 2.009)" 74.208.123.71 - - [15/Mar/2010:08:54:02 +0000] "GET /w00tw00t.at.ISC.SANS.DFind:) HTTP/1.1" 400 298 "-" "-" 81.149.146.231 - - [15/Mar/2010:09:15:18 +0000] "GET /zabbix/ HTTP/1.1" 200 3565 "-" "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_2; en-us) AppleWebKit/531.21.8 (KHTML, like Gecko) Version/4.0.4 Safari/531.21.10" 81.158.71.196 - - [15/Mar/2010:09:16:06 +0000] "GET / HTTP/1.1" 301 313 "-" "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.4; en-US; rv:1.9.0.18) Gecko/2010020219 Firefox/3.0.18" 213.246.222.74 - - [15/Mar/2010:09:45:27 +0000] "GET /" 400 561 "-" "-" 213.246.222.74 - - [15/Mar/2010:09:45:27 +0000] "GET /w00tw00t.at.ISC.SANS.DFind:) HTTP/1.1" 400 298 "-" "-" 190.12.113.196 - - [15/Mar/2010:09:49:05 +0000] "GET /phpMyAdmin/main.php HTTP/1.0" 404 295 "-" "-" So As you can see, there's no access logged around the time of the fault!! How annoying :s I enabled core dumps and here is the backtrace: #0 0x00007f9c8c8a858b in memcpy () from /lib64/libc.so.6 No symbol table info available. #1 0x00007f9c8cfb066d in apr_pstrcat (a=<value optimized out>) at strings/apr_strings.c:165 cp = 0x1fa6b "\205¦H\211¦t`¦\003" argp = 0x7f9c9ad790e8 "Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Re"... res = 0x0 saved_lengths = {129643, 2, 43, 140310399395576, 0, 140310394592712} nargs = <value optimized out> len = <value optimized out> adummy = {{gp_offset = 16, fp_offset = 32668, overflow_arg_area = 0x7fff968a0ec0, reg_save_area = 0x7fff968a0de0}} #2 0x00007f9c8cfb1bf9 in apr_table_merge (t=0x7f9c8f83b148, key=0x7f9c85a465fe "Vary", val=0x7f9c9ad99070 "Referer, Referer, Referer, Referer, Referer") at tables/apr_tables.c:688 next_elt = (apr_table_entry_t *) 0x7f9c8f83b270 end_elt = (apr_table_entry_t *) 0x7f9c8f83b270 checksum = <value optimized out> hash = 22 #3 0x00007f9c85a42cfa in ?? () from /etc/httpd/modules/mod_rewrite.so No symbol table info available. #4 0x00007f9c85a44022 in ?? () from /etc/httpd/modules/mod_rewrite.so No symbol table info available. #5 0x00007f9c8e87bd1a in ap_run_fixups () from /usr/sbin/httpd No symbol table info available. #6 0x00007f9c8e88e8f8 in ap_process_request () from /usr/sbin/httpd No symbol table info available. #7 0x00007f9c8e88bb40 in ?? () from /usr/sbin/httpd No symbol table info available. #8 0x00007f9c8e887ca2 in ap_run_process_connection () from /usr/sbin/httpd No symbol table info available. #9 0x00007f9c8e892849 in ?? () from /usr/sbin/httpd No symbol table info available. #10 0x00007f9c8e892ada in ?? () from /usr/sbin/httpd No symbol table info available. #11 0x00007f9c8e892b90 in ?? () from /usr/sbin/httpd No symbol table info available. #12 0x00007f9c8e89387b in ap_mpm_run () from /usr/sbin/httpd No symbol table info available. #13 0x00007f9c8e86de48 in main () from /usr/sbin/httpd No symbol table info available. Can anyone shed any light on how to move forward with this? I can confirm that the server is operational and doesn't appear to be misbehaving - the failures are so infrequent that I haven't seen it do one while making a request myself. Really appreciate any help! Cheers!

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• ActiveXObject issue in javaScript

  - by shan.swf

  hi.. I wrote a javascript function in my html page to execute an .exe file. for this i used ActiveXObject. my function is: //~~~~~~~~~~~~~~~~~~~~~~~~~~~JavaScript~~~~~~~~~~~~~~~~ function openWin(url) { if (!document.all) { alert ("Available only with Internet Explorer."); return; } var ws = new ActiveXObject("WScript.Shell"); ws.Exec(url); } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ It works fine but there is a alert "An ActiveX control might be unsafe to interact with other parts of the page. Do you want to allow this interaction?" comes up to confirm. If i say YES only it will get loaded. Pls anyone help me on this how to avoid this pop-up coming every time when i reload my html page.

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• OCUnit testing an embedded framework

  - by d11wtq

  I've added a Unit Test target to my Xcode project but it fails to find my framework when it builds, saying: Test.octest could not be loaded because a link error occurred. It is likely that dyld cannot locate a framework framework or library that the the test bundle was linked against, possibly because the framework or library had an incorrect install path at link time. My framework (the main project target) is designed to be embedded and so has an install path of @executable_path/../Frameworks. I've marked the framework as a direct dependency of the test target and I've added it to the "Link Binary with Libraries" build phase. Additionally I've add a first step (after it's built the dependency) of "Copy Files" which simply copies the framework to the unit test bundle's Frameworks directory. Anyone got any experience on this? I'm not sure what I've missed.

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• Using jQuery to load Telerik MVC scripts.

  - by ProfK

  I'm busy building my first MVC app that uses the Telerik MVC components. Their docs specify that the ScriptRegistrar helper be called right at the bottom of a view, e.g. "at the end of the master page.". I assume this renders a script block that must only run when the page has loaded. I normally prefer to achieve this using jQuery, and keep all my script related stuff at the top of my master page, preferably in the <head> tag. Is there anything I can do to achieve this with the Telerik components and do away with the lone and forgotten helper call at the bottom of my master page?

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• Getting Started with Python: Attribute Error

  - by Nacari

  I am new to python and just downloaded it today. I am using it to work on a web spider, so to test it out and make sure everything was working, I downloaded a sample code. Unfortunately, it does not work and gives me the error: "AttributeError: 'MyShell' object has no attribute 'loaded' " I am not sure if the code its self has an error or I failed to do something correctly when installing python. Is there anything you have to do when installing python like adding environmental variables, etc.? And what does that error generally mean? Here is the sample code I used with imported spider class: import chilkat spider = chilkat.CkSpider() spider.Initialize("www.chilkatsoft.com") spider.AddUnspidered("http://www.chilkatsoft.com/") for i in range(0,10): success = spider.CrawlNext() if (success == True): print spider.lastUrl() else: if (spider.get_NumUnspidered() == 0): print "No more URLs to spider" else: print spider.lastErrorText() # Sleep 1 second before spidering the next URL. spider.SleepMs(1000)

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• Performance benefits of upgrading Richfaces to newer version

  - by peteDog

  I have a client that's running an application based on JBoss 4.0.5, Seam 1.2 and RichFaces 3.0.1. Their system is having performance problems due to the fact that a lot of data is coming back from the server to be displayed on screen and it seems like the rendering of that data is taking forever. The data brought back is displayed in a tabbed interface, but the tabs aren't currently being loaded individually, but all at once. I'm trying to build up a case to present to the client on the benefits of upgrading to never version of RichFaces, which, as I understand it, has added a great number of features related to tabbed panels and being able to use ajax to page the data and load the chunks you actually need to display at the moment, and not the rest that's in other tabs. The move to a newer version of RichFaces will also result in never versions of Jboss and Seam, as the current production build of RichFaces 3.2.1 requires JSF 1.2. IF anyone has some suggestions or experience on performance of current versions RichFaces, paging, etc, I would really appreciate some feedback.

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• Using IDataErrorInfo and setting Validation.HasError style

  - by Gaurav

  In WPF using IDataErrorInfo and Style I want to create form where I can provide end user three different status while validating data To make the scenario more clear 1) I have textbox next to it I have icon which provides end user what kind of input textbox expects - Initial status with information icon 2) As soon as user enter data it validates it and decides whether it is valid or not - most of the time it will show cross (X) icon saying invalid data 3) As it is validating on UpdateSourceTrigger="PropertyChanged" it will turn cross icon to green check mark as soon as it gets validated i.e [ ] i (tooltip- Any valid user name ) [Ga ] X (tooltip- Invalid user name. Must be 5 char long) [Gaurav ] * (it will show only correct icon, meaning valid value) How can I achieve this using IDataErrorInfo and Style, I tried doing that but as soon as my form gets loaded it invalidates all the data and shows cross icon at the first time. I want to show different tooltip and different icon for three states (Initial info, Invalid data, Valid data)

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• 32 bit dll importing in 64 bit .Net application

  - by scatterbraiin

  hello i'm having a problem, i try to solve it since yesterday but no luck. i have 32 bit delphi dll which i want to import in .NET Win Application. this application has to be built on ANY CPU mode. of course, there's BadImageFormatException coming, which means that in x64 application can't be loaded x86 dll.. i googled around and find solution, it said i have to do wrapper, but it wasn't clear for me. can anybody tell how to solve this problem, is there any possible way i can import 32bit Delphi dll in program builted Any CPU or x64 mode(maybe another solution).

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• Javascript top variable in IE8

  - by Jim Rootham

  I am trying to reference a javascript function in a .js file loaded in my main page from an iframe using the 'top' variable. It works in FF, Safari, and IE6 but not in IE8. The snippet is (assigned to onmouseover): top.set_image(this, 'images/login_h.png') Where set_image is my function. The error is "Object does not support this function" Also, I have been looking for the definition of top. I can't find it in the ECMAScript specification or the w3schools site and Google is unhelpful (who'da thunk top was a common word?).

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• UINavigationController from UIViewController

  - by 4thSpace

  I currently have this workflow in a tab based app: Tab1 loads... ViewOne : UIViewController >> PickerView : UIViewController >> DetailView : UIViewController "" means loads based on user action. I'd like navigation bars on PickerView and DetailView. PickerView just needs a cancel button in the top left of its nav bar. DetailView needs the normal navbar back button. I already have PickerView's nav bar wired up through IB and working. I'm not sure what to do with PickerView's nav bar. PickerView is also loaded from Tab2, who's main view starts as a UINavigationController. PickerView's nav bar works fine in that case. ViewOne should not have a navigation bar. Any ideas?

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• .NET 4.0 project reference 2.0 assembly

  - by jamone

  I have a project in which I'd like to use some of the .NET 4.0 features but a core requirement is that I can use the System.Data.SQLite framework which is compiled against 2.X. I see mention of this being possible such as the accepted answer here but I don't see how to actually achieve this. When I just try and run my 4.0 project while referencing the 2.X assembly I get: Mixed mode assembly is built against version 'v2.0.50727' of the runtime and cannot be loaded in the 4.0 runtime without additional configuration information. What "additional configuration" is necessary?

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• How do I retrieve the values entered in a nested control added dynamically to a webform?

  - by Front Runner

  I have a date range user control with two calendar controls: DateRange.ascx public partial class DateRange { public string FromDate { get { return calFromDate.Text; } set { calFromDate.Text = value; } } public string ToDate { get { return calToDate.Date; } set { calToDate.Text = value; } } } I have another user control in which DateRange control is loaded dynamically: ParamViewer.ascx public partial class ParamViewer { public void Setup(string sControlName) { //Load parameter control Control control = LoadControl("DateRange.ascx"); Controls.Add(control); DateRange dteFrom = (DateRange)control.FindControl("calFromDate"); DateRange dteTo = (DateRange)control.FindControl("calToDate"); } } I have a main page webForm1.aspx where ParamViewer.ascx is added When user enter the dates, they're set correctly in DateRange control. My question is how how do I retrieve the values entered in DateRange (FromDate and ToDate)control from btnSubmit_Click event in webForm1? Please advise. Thank you in advance.

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• [C#] GrayScale (by ColorMatrix) causes OutOfMemoryException. Why ?

  - by Tony

  I have 2 forms, A and B. On the Form A, I click a button and an Image is being loaded to a PictureBox located ona the Form B. And, I want to set GrayScale to this image by: public void SetGrayScale(PictureBox pb) { ColorMatrix matrix = new ColorMatrix(new float[][] { new float[] {0.299f, 0.299f, 0.299f, 0, 0}, new float[] {0.587f, 0.587f, 0.587f, 0, 0}, new float[] {0.114f, 0.114f, 0.114f, 0, 0}, new float[] { 0, 0, 0, 1, 0}, new float[] { 0, 0, 0, 0, 0} }); Image image = (Bitmap)pb.Image.Clone(); ImageAttributes attributes = new ImageAttributes(); attributes.SetColorMatrix(matrix); Graphics graphics = Graphics.FromImage(image); graphics.DrawImage(image, new Rectangle(0, 0, image.Width, image.Height), 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, attributes); graphics.Dispose(); pb.Image = image; } This code works properly when the PictureBox is on the same form (A). But, when it is on the Form B, the OutOfMemoryException is raised. Why ?

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• Hiding a dropdown menu without it flashing with prototype

  - by TenJack

  I have a number of dropdowns and divs that are hidden when the page loads and can be toggled with a click or mouseover, but some of them flash b/c the javascript does not run in time. I have their display initially set to block and then I use javascript/prototype to find the element and hide it. I have tried loading these "hider" functions using dom:loaded but there is still flashing. This is an example of a dropdown prototype initialization funtion. From http://www.makesites.cc/programming/by-makis/simple-drop-down-menu-with-prototype/: var DropDownMenu = Class.create(); DropDownMenu.prototype = { initialize: function(menuElement) { menuElement.childElements().each(function(node){ // if there is a submenu var submenu = $A(node.getElementsByTagName("ul")).first(); if(submenu != null){ // make sub-menu invisible Element.extend(submenu).setStyle({display: 'none'}); // toggle the visibility of the submenu node.onmouseover = node.onmouseout = function(){ Element.toggle(submenu); } } }); } }; Is there a better way to hide div's or dropdowns to avoid this flashing?

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• C-array to NSData and back

  - by Thor Frølich

  I'm attempting to save a c-style array of Vertex3D structs to an NSData object and get them back when reloading the app: NSData *vert = [NSData dataWithBytes:&vertices length:(sizeof(Vertex3D) * NUM_OF_VERTICES)]; This data is then saved and attempted to be read back into my c-array thusly: vertices = malloc(sizeof(Vertex3D) * NUM_OF_VERTICES); [vert getBytes:&vertices length:(sizeof(Vertex3D) * NUM_OF_VERTICES)]; The above results in “EXC_BAD_ACCESS” followed by: malloc: * error for object 0x48423c0: pointer being freed was not allocated I'm very new to programming so there's probably some fundamental memory management principle I'm unaware of. I have verified that the loaded NSData is identical to the saved one, but it's clear that the transition from c-array to NSData (and back) is not as I intended.

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• Python - do big doc strings waste memory?

  - by orokusaki

  I understand that in Python a string is simply an expression and a string by itself would be garbage collected immediately upon return of control to a code's caller, but... Large class/method doc strings in your code: do they waste memory by building the string objects up? Module level doc strings: are they stored infinitely by the interpreter? Does this even matter? My only concern came from the idea that if I'm using a large framework like Django, or multiple large open source libraries, they tend to be very well documented with potentially multiple megabytes of text. In these cases are the doc strings loaded into memory for code that's used along the way, and then kept there, or is it collected immediately like normal strings?

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