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MDI Child Form Positioning

Posted on 1997-03-26
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Last Modified: 2008-03-04
I am using VB Version 3.0

I have an application in which I have an MDI child form.
I want to be able to place the child form in the centre of the MDI window. Currently I am using the Top and Left properties of the child to do this but unfortunately the child window is realised before the positioning takes place because the VB help says that you cannot hide a MDI child form.

The overall effect is that the child form pops up in one part of the MDI window and them immediately centres itself.

Does anyone know of a way to make the child form appear in the MDI window without this "flickering" effect ?
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Question by:Graeme Hartley
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ksleung earned 50 total points
ID: 1424749
I have written a routine called CentreMDIChild.  It works fine for me.  You may try and see whether it works for you or not.

Sub CentreMDIChild(frmChild As Form)
 frmChild.Top = (MainContainer.ScaleHeight - frmChild.Height) / 2
 frmChild.Left = MainContainer.Left + _
  (MainContainer.ScaleWidth - frmChild.Width) / 2
End Sub

BTW, my PC config. is P166 with 32MB RAM and running on NT 3.51 with SP5. If your PC's display card is slow, then it may affect the GUI.


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