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MDI operation on remaining child after on child closed?

Posted on 2002-03-22
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Last Modified: 2013-11-20
I have a MDI app.  If I have 3 or more child windows open at a time, and a close one off the 3 open windows, I want the remaining windows to automatically retile.  A have a custom tile function in my CMainFrame and need to call it to reposition the remaining child windows.  If I call this from the child I am closing, I get an ASSERTION because the child the calls reposition, is destroyed.  I need to call this reposition AFTER the client is destroyed.  I imagine I do this from CMainFrame but can not figure it out.  All suggestions welcome and code samples greatly appreciated.
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Question by:Surfer
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LVL 23

Expert Comment

by:Roshan Davis
ID: 6888250
Check IsWindow(hWnd) before reposition

GOOD LUCK
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Author Comment

by:Surfer
ID: 6888262
How do I know when to check IsWindow()against my reposition, from CMainFrame?  Is there a member in CMainFrame that is called AFTER the Child is destroyed?
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Author Comment

by:Surfer
ID: 6888266
How do I know when to check IsWindow()against my reposition, from CMainFrame?  Is there a member in CMainFrame that is called AFTER the Child is destroyed?
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LVL 23

Accepted Solution

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Roshan Davis earned 200 total points
ID: 6888278
Add this code in ur CChildFrame Destructor

((CMDIFrameWnd*)AfxGetMainWnd())->MDITile(MDITILE_VERTICAL);

GOOD LUCK

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Author Comment

by:Surfer
ID: 6888280
How do I know when to check IsWindow()against my reposition, from CMainFrame?  Is there a member in CMainFrame that is called AFTER the Child is destroyed?
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LVL 23

Expert Comment

by:Roshan Davis
ID: 6888281
Try This

this is working , not to check IsWindow()

Add this code in ur CChildFrame Destructor

((CMDIFrameWnd*)AfxGetMainWnd())->MDITile(MDITILE_VERTICAL);

GOOD LUCK
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Author Comment

by:Surfer
ID: 6888284
That did the trick!
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LVL 8

Expert Comment

by:VinExpert
ID: 6888298
Hi,

Can U just post the code of how u r calling ur tile window function from child window? And if possible post the custom tile function also, so that we can get wher exactly it is crashing.

VinExpert
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