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Refresh screen

Posted on 2012-12-28
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Last Modified: 2012-12-31
I have an app that opens a command prompt window then moves that command prompt window.  Everything works fine but after the command prompt window is moved there is a "ghost" of the window where it originally was.  If you grab the command prompt window and move it around it will erase the ghost of itself if that makes sense.  

What I need is something that will refresh the screen to get rid of the "ghost" image of the command prompt window (vb6).
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Question by:MERCOMMS
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Expert Comment

by:Element1910
ID: 38727183
Is it creating a ghost copy every time you move it or only once?
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Author Comment

by:MERCOMMS
ID: 38727192
I only move it via code one time and it doesn't create the ghost then but instead leaves a ghost of where it was originally.  Then if I grab the window I can use it kind of like an eraser to erase the ghost.
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Expert Comment

by:Martin Liss
ID: 38727543
Does the same thing happen if the code is run in the IDE? If NOT then try putting a DoEvents line after the code that moves the window.
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Author Comment

by:MERCOMMS
ID: 38727887
Doevents after moving the window has no affect.
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Expert Comment

by:eemit
ID: 38727974
Try to set Form AutoRedraw property to True.
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Expert Comment

by:Martin Liss
ID: 38728038
Does it only happen with the exe?
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Expert Comment

by:Mike Tomlinson
ID: 38728741
Is your app by chance waiting for the command prompt window to close?

How are you opening that command prompt?
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Accepted Solution

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shorvath earned 200 total points
ID: 38731090
I assume that when you say you are 'Moving the Window' you are using the API

Declare Function MoveWindow Lib "user32.dll" (ByVal hwnd As _
Long, ByVal x As Long, ByVal y As Long, ByVal nWidth As _
Long, ByVal nHeight As Long, ByVal bRepaint As Long) As Long 

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The last option, bRepaint determines if the screen is repainted or not.

If you don't want the ghost image, set this value to TRUE  ( 1 )

retval = MoveWindow(Form1.hWnd, 200, 150, 175, 300, 1)

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