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Hello.

When I change size of CExtControlBar.

A drawing domain flickers.

http://www.yukai.jp/~ifreeta/20080425/SampleScroll.lzh

I am troubled.

I ask for advice.

Thanks,

The link you provided leads to a page with "File not found" .

We guess you are using the OnPaint() message handler in your dialog class. If so, the CClientDC class should be used instead of CPaintDC, because the themed background is painted before the OnPaint() handler is called:

 
void CMainDlg::OnPaint() 
{
     CClientDC dc(this);
     dc.LineTo( 100, 100 );
}

Thank you for advice.

With memory DC, I got rid of screen flicker.

http://www.geocities.jp/chiakifujimon/makesoft2/proc3.html

Using the memory DC in the WM_PAINT message handle allows you to implement flicker free window painting. But you should also prevent painting by the WM_ERASEBKGND message. You should implement an empty message handler for the WM_ERASEBKGND message or a register window class with a NULL brush.