Thread: Help with CDC.

I have just signed up for this new board so lets see if can get any replies for this.

I have the following code in Microsoft Visual C++ 6.0

CBitmap bmpBlue;
bmpBlue.LoadBitmap(IDB_BLUE);

CDC bmpDC;
bmpDC.CreateCompatibleDC(dc);
bmpDC.SelectObject(&bmpBlue);

CDC memDC;
memDC.CreateCompatibleDC(dc);
memDC.BitBlt(0,0,400,400,&bmpDC,0,0,SRCCOPY);

BitBlt(dc->m_hDC, 0, 0, 400, 400, memDC.m_hDC, 0, 0, SRCCOPY);

and it outputs nothing. I belive this is because the memDC does not have a size. If i just paint the tmpDC like this:

BitBlt(dc->m_hDC, 0, 0, 400, 400, bmpDC.m_hDC, 0, 0, SRCCOPY);

it works fine. Do you know i can fix my problem?

Thanx,
HeadExplodes .

So i HAVE to have a window or bitmap accociated with the CDC for it to work?