onPaint question

[Peter Ignarson]

Hi - I have the following code to redraw some graphics on the background of
an MDI window each time it is resized. The problem is that the code in
RedrawWindow takes a lot of time and my simple program appears slow.

Protected Overrides Sub OnPaint(ByVal pe As PaintEventArgs)
MyBase.OnPaint(pe)
call RedrawWindow(pe.Graphics())
End Sub


Is there a way to just get the part of the window that needs redrawing from
pe so I can just redraw that part in RedrawWindow?

Thank you
Pete

 

[Herfried K. Wagner [MVP]]

Hi - I have the following code to redraw some graphics on the background of
an MDI window each time it is resized. The problem is that the code in
RedrawWindow takes a lot of time and my simple program appears slow.

Protected Overrides Sub OnPaint(ByVal pe As PaintEventArgs)
MyBase.OnPaint(pe)
call RedrawWindow(pe.Graphics())
End Sub

Is there a way to just get the part of the window that needs redrawing from
pe so I can just redraw that part in RedrawWindow?

'pe.ClipRectangle'.

 

[John Smith]

OnPaint sucks and originates too much flicker

draw a bitmap and set your control.image to the bitmap, no more flicker,
no more OnPaint