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Window Refresh API Question

Posted on 2001-07-31
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Last Modified: 2012-05-04
I need to have windows completely redraw a window, including the titlebar, system menu, and all controls.

This is due to displaying a popup window over a windowed DirectX area.  Windows does not seem to understand that the DirectX window was updated and thus, the popup window needs to be redrawn.

I have tried Me.Refresh and UpdateWindow Me.hWnd.  Neither of these works properly.  

Is there some message I can send to the window or API call that will tell Windows to just redraw the whole thing???

-- Brian
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Question by:bpoff
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9 Comments
 
LVL 8

Expert Comment

by:Dave_Greene
ID: 6338567
Set AutoRedraw = True
and change the forms zorder

Me.Zorder 0  'Bring it to the top and repaint
0
 
LVL 5

Expert Comment

by:KDivad
ID: 6338701
InvalidateRect. I don't remember for sure how it works, but it basically tells windows that the area's display has become invalid and needs to be repainted.
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LVL 1

Author Comment

by:bpoff
ID: 6341407
Autoredraw=True does nothing in this case.  InvalidateRect also does not help as you can only invalidate the client area of the window.  I need to redraw the entire form, including the system menu, close button, and caption.

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LVL 1

Author Comment

by:bpoff
ID: 6341469
Ah yes, the answer is to use a DirectDraw Clipper object.

The documentation on what these things do is so amazingly obscure that I just figured it out.

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LVL 5

Expert Comment

by:KDivad
ID: 6342827
<<... only invalidate the client area of the window ...>>

You sure? I'm not doubting you, but I could swear I've seen it used on custom caption bars before!
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Author Comment

by:bpoff
ID: 6344447
KDivad,

The reason I say it's only the client area of the window is that you have to specify a rectangle and an upper-left coordinate of 0,0 is the upper left of the client area of the window, not including the title bar.  

A better way to look at it is what do you get if you do a "GetWindowRect" on a form?  You get the coordinates of the window, not including the titlebar and its various gizmos.
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LVL 5

Expert Comment

by:KDivad
ID: 6345718
Ah, ok. Maybe I am just remembering wrong then.

Anyway, I'm glad you found your answer!
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LVL 49

Expert Comment

by:DanRollins
ID: 7198300
bpoff, an EE Moderator will handle this for you.
Moderator, my recommended disposition is:

    Refund points and save as a 0-pt PAQ.

DanRollins -- EE database cleanup volunteer
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LVL 5

Accepted Solution

by:
Netminder earned 0 total points
ID: 7213309
Per recommendation, points refunded and question closed.

Netminder
CS Moderator
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