Error Creating Window Device Context
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Topic "Error creating window device context" [Reply to topic] [Log in] [Forum Index] [Forum "Automatic Bug Reports"] [Previous topic] error creating window handle c# solution [Next topic] Author Message asd@... Guest Posted: 2016-03-26 03:49 Error creating window device context [Reply with quote]
TListBox TMainMenu TMemo TPanel TPopupMenu TRadioButton TRadioGroup TScrollBar You are not logged in. Help Print Public Report Report From: Delphi-BCB/VCL/Standard Controls/TRadioGroup [ Add a report in this area ] Report #: 106425 Status: Reported Device Context/Window Handle Errors http://qc.embarcadero.com/wc/qcmain.aspx?d=106425 for TRadioGroups Project:Delphi Build #: RAD Studio XE2 Version: 16.4 Submitted By: William Paulsen Report Type: Feature Specification issue Date Reported: 6/14/2012 11:36:55 AM Severity: Infrequently encountered problem Last Updated: 10/22/2012 6:05:53 PM http://www.progtown.com/topic110085-error-creating-window-device-context-frames.html Platform: All versions Internal Tracking #: Resolution: None(Resolution Comments) Resolved in Build: : None Duplicate of:None Voting and Rating Overall Rating: No Ratings Yet 0.00 out of 5 Total Votes: None error creating Description I ported an application from CodeGear 2007 to XE2. After doing so, various errors occur related to the handles for certain TRadioGroup components on the main form of the application. Error messages include 'Error creating window device context' or Invalid window handle (error code 1400) when selecting the different tabsheets that have the failing TRadioGroup components. The Invalid window handle error may also occur when closing the application. For any given error creating window build, the error consistently repeats.For certain builds, the error is masked, including when the radio groups are deleted or occasionally when the radio groups are present.In one case the error did not occur with radio groups but then repeated on the next build with the only difference being the location of the radio group on the screen. I had read that thread safety issues can cause similar symptoms.The form is created on the same thread that it fails on.Several background threads are run to complete tasks like loading data from the registry but it is unclear to me how that could impact this issue. Steps to Reproduce: The issue duplicates readily in the application referenced above.The source for this application can only be transmitted with a NDA in place. Workarounds None Attachment None Comments Tomohiro Takahashi at 6/14/2012 7:32:46 PM - > The source for this application can only be transmitted with a NDA in place. Do you have any simple sample project to reproduce your issue? If yes, could you please attach it as a .zip to this report? if not, could you pelase contact technical support service? http://support.embarcadero.com/ William Paulsen at 10/22/2012 2:26:55 PM - A workaround for this issue was found by setting MaxHeight=MaxWidth=MinHeight=MinWidth=0 and WordWrap=true for all TRadioGroups in the
Builder »Error creating window device context + Frames Pages 1 You must login or register to post a reply Topic RSS feed Posts [ 11 ] 1 Topic by The anonymous author 181 1999-11-29 21:00:00 The anonymous author 181 Member Offline Registered: 2005-12-16 Posts: 254 Topic: Error creating window device context + Frames Hello! The problem in the following is in application on D5 the frame in which standard actions by operation with it, in particular, output agents of various events Edit' are described. The frame is implemented in other forms, the jamb begins by operation of the user in these forms. The error "Error creating window device context" jumps out. In what there can be a reason? 2 Reply by Softwarer 2004-10-25 03:48:00 Softwarer Member Offline Registered: 2005-02-15 Posts: 20,197 Re: Error creating window device context + Frames Hello, the Anonymous author, you wrote:In what there can be a reason?In everything. Put in options of project Use debug DCUs and search for an error a debugger. 3 Reply by DarkMaster 2004-10-25 04:44:00 DarkMaster Member Offline Registered: 2010-10-07 Posts: 6,055 Re: Error creating window device context + Frames Hello, the Anonymous author, you wrote:A> the Frame is implemented in other forms, the jamb begins by operation of the user in these forms. The error "Error creating window device context" jumps out. In what there can be a reason?How you implement? 4 Reply by The anonymous author 181 2004-10-25 04:44:00 The anonymous author 181 Member Offline Registered: 2005-12-16 Posts: 254 Re: Error creating window device context + Frames Hello, DarkMaster, you wrote:DM> How you implement?By means of component Frames from a bookmark of components Standard. And errors appear not at once, and after any operating time with forms with frames. At the acquaintance the problem with similar errors dared conversion of the project from D5 in D6. At me real such possibility is not present. Unambiguously the problem arises at usage of frames but how it to correct and the main thing that? 5 Reply by DarkMaster 2004-10-25 05:55:00 DarkMaster Member Offline Registered: 2010-10-07 Posts: 6,055 Re: Error creating window device context + Frames Hello, the Anonymous author, you wrote:By means of component Frames from a bookmark of components Standard.Fine And errors appear not at once, and after any operating time with forms with frames.Give an example the code which causes (visualizes) the frame. Whether there is no at you a dynamic location on the frame? 6 Reply by The anonymous author 181 2004-10-25 05:55:00 The anonymous author 181 Member Offline Regist