Re: ActiveX Ctrl AND CMemDC flickerfree drawing
On 1 aug, 04:51, Joseph M. Newcomer <newco...@flounder.com> wrote:
Define "flicker". If you are resizing and each time you move the resiz=
ing border 1 pixel,
the image has to be redrawn. So it will redraw and look like a flicker=
..
If you see a background color being painted, then the chessboard, that's =
a different case.
But you have not really defined "flicker".
You can avoid this by dealing with the WM_ENTER_SIZEMOVE (or _MOVESIZE, I=
forget) and
WM_EXIT_SIZEMOVE and disable drawing while the resizing is happening.
=
joe
On Fri, 31 Jul 2009 14:21:31 -0700 (PDT), RAN <nijenh...@wish.nl> wrote:
On 31 jul, 23:11, "Scott McPhillips [MVP]" <org-dot-mvps-at-scottmcp>
wrote:
You should be returning TRUE from OnEraseBkgnd
BOOL CchessCtrl::OnEraseBkgnd(CDC* pDC)
{
// TODO: Add your message handler code here and/or call default
return FALSE;
//return COleControl::OnEraseBkgnd(pDC);
}
Scott McPhillips [VC++ MVP]
I changed it to TRUE.
It still flickers a lot. no change.
Joseph M. Newcomer [MVP]
email: newco...@flounder.com
Web:http://www.flounder.com
MVP Tips:http://www.flounder.com/mvp_tips.htm- Tekst uit oorspronkelijk b=
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Thanks for your comments, i found the solution after more google-ing
for flickerfree AND OnEraseBkgnd, at: http://www.codeguru.com/cpp/controls/=
controls/article.php/c2297
Also thanks for pointing out the WM_EXITSIZEMOVE message i was
thinking about something like that too. Did not know this message
existed.
It now no longer flashes when the chessboard is resized. Many thanks
for pointing me in the right direction.