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ListView flicker

Posted on 2004-04-29
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Last Modified: 2010-07-27
I am having problems with a ListView flickering whenever I add to it, or change colours of items within the ListView (for highlighting purposes).

Is there any way to prevent this?
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Question by:hairybarbarian
5 Comments
 
LVL 49

Expert Comment

by:Ryan Chong
ID: 10950440
Try apply LockWindowUpdate  API before and after your process, like:

Private Declare Function LockWindowUpdate Lib "user32" Alias "LockWindowUpdate" (ByVal hwndLock As Integer) As Integer

then..

..
LockWindowUpdate ListView1.Handle.ToInt32()
'Do your process here..
LockWindowUpdate 0
..

Hope this helps
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LVL 5

Expert Comment

by:tgannetts
ID: 10950444
Use begin and end Update commands on the listview:

me.listview1.BeginUpdate()

'Perform actions
....

me.listview1.EndUpdate()

Tom
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LVL 27

Accepted Solution

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Dabas earned 125 total points
ID: 10953462
Hi hairybarbarian:
Bad news.
This question has been asked before (even by myself 500 point question)
Unfortunately no acceptable answer is given (in my case there was no answer at all), and eventually the question gets deleted.
In my opinion it is a M$oft bug. Any change to the listview causes a redraw of the whole grid, which causes the flicker.

Dabas
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