how to paint a bitmap to the dialog client dc from the memory dc

Krauze

Ive tried to capture a particular area of the screen to the memory dc.

// rc has been defined as CRect and its coordinates are based on the dialog client area
CDC dcDisplay, dcMem;
CBitmap btmDisplay, \*pbtmOld;
int nWidth  = GetSystemMetrics( SM\_CXSCREEN );
int nHeight = GetSystemMetrics( SM\_CYSCREEN );

dcDisplay.CreateDCW( (LPCTSTR)"DISPLAY", NULL, NULL, NULL );
btmDisplay.CreateCompatibleBitmap( &dcDisplay, nWidth, nHeight );
dcMem.CreateCompatibleDC( &dcDisplay );

pbtmOld = dcMem.SelectObject( &btmDisplay );
// the captured area has the same size as the rc
ClientToScreen( &amp;rc );
dcMem.BitBlt( 0, 0, rc.Width(), rc.Height(), &dcDisplay, rc.left, rc.top, SRCCOPY );
dcMem.SelectObject( pbtmOld );

Now i wanna paint this bitmap to the dialog dc. But i dunno how to write the codes. Can anyone help? PS: the above codes may have faults

Niklas L

1. Create a memory DC 2. Select your image into it 3. Blit to the paint DC (of the dialog) 4. Unselect the image from mem DC

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