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borland builder MDI modal window key down event

Posted on 2002-06-27
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Last Modified: 2008-01-09
In Borland Builder an MDI application has a Modal window which is not a Child window.  For non-child modal windows, how does one get the OnKeyDown event?


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Question by:lirtua
6 Comments
 
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DrDelphi earned 50 total points
ID: 7117074
You could send a user defined message back to the mainform:

MODAL form's OnKeyDown event handler:

{
  SendMessage(FindWindow('TMyMainForm',null),WM_USER+100,0,0);
}  



MainForm:

class TMyMainForm : public TForm
{
__published:     // IDE-managed Components
private:     // User declarations
public:          // User declarations
       __fastcall TMyMainForm(TComponent* Owner);
       void __fastcall ProcessMyMessage(TMessage &msg);
       BEGIN_MESSAGE_MAP
       MESSAGE_HANDLER(WM_USER+100, TMessage, ProcessMyMessage)
       END_MESSAGE_MAP(TForm)
};


//MyMainform cpp


void __fastcall TMyMainForm::ProcessMyMessage(TMessage &msg)
{
 if (msg.Msg=WM_USER+100) ShowMessage("Modal form keydown event fired");
}




Good luck!!



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Author Comment

by:lirtua
ID: 7122475
ok - this looks cool - i'll give it a try sometime this week - have a couple other issues that need fixing first - i'll let you know how it goes in a few days
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Author Comment

by:lirtua
ID: 7147870
Ok DrDelphi - heres the deal - it works almost all the time - it doesnt work the first time, ie if you start the app, open a modal non-child window, and then hit the MODAL form's OnKeyDown event - once you close the modal window, and reopen it, the code you gave works great - so im stumped

the solution looks pretty good - just needs small fix
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Expert Comment

by:DrDelphi
ID: 7150303
Hmmm.. sounds like a timing issue. I'd check the return of FindWindow to make sure that the "Main" form is being hit.

Good luck!!
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Expert Comment

by:griessh
ID: 7284952
Dear lirtua

I think you forgot this question. I will ask Community Support to close it unless you finalize it within 7 days. You can always request to keep this question open. But remember, experts can only help you if you provide feedback to their questions.
Unless there is objection or further activity,  I will suggest to accept

     "DrDelphi"

comment(s) as an answer.

PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER!
======
Werner
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by:Mindphaser
ID: 7332982
Force accepted

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