Re: Window painting

From:

"Vipin" <Vipin@nospam.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

Sat, 2 Sep 2006 21:32:11 +0530

Message-ID:

<uFiblkqzGHA.476@TK2MSFTNGP06.phx.gbl>

never post a WM_PAINT message, it never works. You should use
InvalidateRect(...)/InvalidateRgn.
WM_PAINT message never resides in the queue. The way it works is the
GetMessage/PeekMessage figures if there is a update region for the windows
for the thread with which the message loop is attached, it generates a
WM_PAINT message which gets directly posted to the window proceedure.

--
Vipin Aravind
http://www.explorewindows.com/Blogs

"Adrian" <richard.the.lionheart@gmail.com> wrote in message
news:1157208847.871705.245880@i42g2000cwa.googlegroups.com...

Can anybody please help!

I am using OpenGL in my MFC app. I want to do render a window in
Selection mode when mouse button is down and then when the mouse button
is up I want to render the window in Render mode. I have written
appropriate code in OnLButtonUp and OnLButtonDown as below

void CManifoldViewerView::OnLButtonDown(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default

renderingMode = 1; // variable to keep track of rendering mode 0 -
GL_RENDER
//1 - GL_SELECT

PostMessage(WM_PAINT);

CView::OnLButtonDown(nFlags, point);
}

void CManifoldViewerView::OnLButtonUp(UINT nFlags, CPoint point)
{

renderingMode = 0;

PostMessage(WM_PAINT);

CView::OnLButtonUp(nFlags, point);

}

but its not working can anybody tell what is wrong?

thanks