Re: CBitmap alignment issue

Hi folks,

I am trying to use CBitmap and HBITMAP to display 24bpp images in my
Windows Mobile 5.0 application.
Everything works fine as long as my image is aligned on 4 bytes. Now not
all images are like that.

I tried the following:

******************************************************************
// get a buffer with 4-bytes aligned pixels
unsigned char* pBits = extractPixelDataAlignedBytes( );
// create a CBitmap
CBitmap* pBmp = new CBitmap();
pBmp->CreateBitmap(iWidth, iHeight, nPlanes, nBitcount, (const void*)
pBits) )

// Display image in CView::OnDraw()
{
...
HBITMAP hBmp = (HBITMAP)*pBmp;
if( hBmp )
{
 CRect rcClient;
 GetClientRect(&rcClient);

 dcMem.CreateCompatibleDC(NULL);
 dcMem.SelectObject(hBmp);

 pDC->StretchBlt(rcClient.left, rcClient.top,
     rcClient.right, rcClient.bottom,
     &dcMem,
     0,
     0,
     BmpWidth,
     BmpHeight,
     SRCCOPY);
}
}
*********************************************************************

The image is not displayed properly when I need to add 2 or 3 bytes at the
end of each line to be aligned on 4-bytes. That works when I need to add 1
byte to be aligned on 4-bytes...

Did I miss something? Is what I want to do possible with CBitmap object or
do I need to use a DIB object? (if not CBitmap are useless)

Thanks in advance
--
ST
---------------------------
stopin@nospam.nospam