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Hello Experts !! 
 
I developed an SDI application which displays a Bitmap !! I call UpdateAllViews(NULL) very frequently when a MOUSE_MOVE message is sent. The problem is that the bitmap flickers a lot. I wanna reduce or simple avoid flickering, which is why I'm using BitBlt() function. but still It seems to flicker. 
 
This is the code I've written; 
 
CPaintDC dc(this); 
CDC memDC; 
memDC.CreateCompatibleDC(&amp;dc); 
 
CBitmap bm; 
bm.LoadBitmap(IDB_BITMAP1); 
 
memDC.SelectObject(bm); 
CRect rc; 
GetClientRect(&amp;rc); 
OnDraw(&amp;dc); 
dc.BitBlt(0,0,rc.Width(), rc.Height(), &amp;memDC,0,0,BLACKNESS); 
 
Can somebody tell me why this does not work as expected. 
 
--Din-- 

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Hello Experts !!

I developed an SDI application which displays a Bitmap !! I call UpdateAllViews(NULL) very frequently when a MOUSE_MOVE message is sent. The problem is that the bitmap flickers a lot. I wanna reduce or simple avoid flickering, which is why I'm using BitBlt() function. but still It seems to flicker.

This is the code I've written;

CPaintDC dc(this);
CDC memDC;
memDC.CreateCompatibleDC(&dc);

CBitmap bm;
bm.LoadBitmap(IDB_BITMAP1);

memDC.SelectObject(bm);
CRect rc;
GetClientRect(&rc);
OnDraw(&dc);
dc.BitBlt(0,0,rc.Width(), rc.Height(), &memDC,0,0,BLACKNESS);

Can somebody tell me why this does not work as expected.

--Din--


Using BitBlt() Function !!

Kernel and system programming is the process of creating the software necessary for a computer or device to function and operate other programs. Some operating systems (such as Microsoft Windows) are proprietary, but others, such as the various Linux distributions, are open source.