Flicker Free Dialog Bitmaps

[Jason Brooks]

Hello,

I'm updating a Virtual Bitmap and blitting to a RECT in my Dialog Based Application. However everytime I InvalidateRect( &m_Area ) the subsequent PAINT Flickers. If I was using an SDI or MDI template, then I could over ride WM_ERASEBKGND, however Dialog Based MFC Applications don't appear to support this message so I can't appear to over ride it.

Can anyone point me in the right direction?

I am creating the bitmap to blit off-screen and only Invalidating the area that needs updating.

Many Thanks
Jason
http://www.netcomuk.co.uk/~jbrooks

[Wayne Fuller]

Are you doing this in your WM_PAINT override?

Wayne

[Jaeyeon Lee]

When you call InvalidateRect, add the second argument as FALSE.
That is,
InvalidateRect( &m_Area, FALSE )