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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).

MERCOMMS

Asked: 2012-12-28

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Visual Basic Classic

1 Solution

LVL 7

Element1910Commented: 2012-12-28

Is it creating a ghost copy every time you move it or only once?

MERCOMMSAuthor Commented: 2012-12-28

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.

LVL 53

Martin LissOlder than dirtCommented: 2012-12-28

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.

MERCOMMSAuthor Commented: 2012-12-28

Doevents after moving the window has no affect.

LVL 15

eemitCommented: 2012-12-28

Try to set Form AutoRedraw property to True.

LVL 53

Martin LissOlder than dirtCommented: 2012-12-28

Does it only happen with the exe?

LVL 86

Mike TomlinsonMiddle School Assistant TeacherCommented: 2012-12-28

Is your app by chance waiting for the command prompt window to close?

How are you opening that command prompt?

LVL 9

shorvathCommented: 2012-12-30

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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