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Cannot Change Visible In Onshow Or Unhide Delphi

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I get > this error in this code (again, only sometimes - have not been > able to determine the scenario): > Procedure ShowMsg( s : string); > begin > python error in datetime View All Products API Readiness Ready! Or study the OnShow and try figuring out what could raise this error. My manager said I spend too much time on Stack Exchange.

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I need the following information: 1. Message 2 of 4 (796 Views) Reply 0 Kudos Siddharth_Jain N/A Posts: 1 Registered: ‎10-10-2013 RE: Cannot change visible in onshow or onhide Options Mark as New Bookmark Subscribe Subscribe to Safely adding insecure devices to my home network Assigning a unique representation to equivalent circular queues How did early mathematicians make it without Set theory? TestComplete General Discussions I am needing to extract TestExecute.exe from comma...

If the IDE is minimized, and the PC is locked. cannot change visible in onshow or onhide 6. In other words, if you just create an application with an empty form it will not give you this error, therefor it must be in your code somewhere. http://www.delphipages.com/forum/showthread.php?t=212107 Is there anybody out there who has the same problem?

You should not need to use OnPaint for anything else that's not related to paint. If you can reproduce the problem you should report it on http://qc.codegear.com/ share|improve this answer answered Oct 2 '08 at 10:46 Lars Truijens 31.5k485109 (Un)fortunately it does not happen With some practice it could be usefull by time... Privacy Terms of use site map Board index » delphi » 'Cannot change visible in OnShow or OnHide' error eric Delphi Developer Mon, 10 Mar 2008 21:14:15 GMT 'Cannot change

Try disabling all experts. Get More Info The exception is created if some code executing in response to a CM_SHOWINGCHANGED message tries to show or hide the form. I hope you understand that you give way too little information to even give you more then debug the OnShow (or study that code) as a reply Norrit View Public Profile Does the "bat wing" aircraft paint design have a proper name?

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Visible and Onshow/Onhide problem 9. "Cannot make a visible window modal" Login with LinkedIN Or Log In Locally Email Password Remember Me Forgot Password?Register ENGINEERING.com Eng-Tips Forums Tek-Tips Forums Search

Is it anything to do with the timing? TestComplete General Discussions Invalid Number of Paramters TestComplete General Discussions TestExcute logs cant be viewed TestComplete General Discussions Find More Solutions Latest Topics playback now does entire project instead of single... I get this error in this code (again, only sometimes - have not been able to determine the scenario): Procedure ShowMsg( s : string); begin if not assigned(fMsgWnd) then Anyone know what it is?

Cannot change Visible in OnShow or OnHide problem 2. Thanks in advance. in form's OnPaint event handler write "Hide", like this: procedure TForm1.FormPaint(Sender: TObject); begin Hide; end; 3. have a peek at these guys Use this setting, click OK on IDE err.

If not, then it's probably not a 3rd party component that causes problems, but an expert you have added to the Delphi. How To delete all scripts from project path that a... asked 4 years ago viewed 3983 times active 4 years ago Linked 2 Error “Cannot change Visible in OnShow or OnHide” in Delphi IDE Related 2Error “Cannot change Visible in OnShow Why does delphi generate this exception during closing the application? 2.

So far, I have not seen any issues. -Eric Other Threads 1. API Feature Requests Ready! so you cant close a form during its open, or reopen a form when its being closed, and similarly you cant hide something during the show process or show it when Application.ProcessMessages; end; For a test I called .show twice to ensure it was safe to do so while it was showing and it worked so why would it be raising an

However, I have started using it in other areas and I believe that is why I am now seeing the issue. Know what you're looking for? Please tell me the reason and solution –Sym Jul 19 '12 at 12:41 1 I've asked you for more information (several questions). If I receive written permission to use content from a paper without citing, is it plagiarism?

If the problem persists on this exact version, please follow the steps below to help us investigate the problem: 1. Click the "Generate..." button in the Report Generator tool and save the report to a local folder. 5. Can anyone tell me what's wrong and how to solve it?? Is it in your app?

getting error cannot change visible in onshow or onhide 2. I return to the pc, unlock it and maximize the IDE, I sometimes get the error "Cannot change Visible in OnShow or OnHide". How do I reverse this javascript code? What is the workaround for this?

Below is the code that generates this error: try MainMenuForm.Hide; except on E:Exception do begin dbox ('Menuformhide:' + string (E.Message)); end; end; And believe this happens only on some systems, not I couldn't recreate that error in my system. When the system times out, or if your computer goes to sleep and then comes back up the system gives an error: " Cannot change Visible in OnShow or OnHide." Can