Image Printing

[User 948393]

I am trying to print a bmp image in MFC. I have tried creating a memory DC (compatible with the printer) and using BitBlt but it doesn't work for a printer DC. I have also tried CreateCompatibleBitmap which may work but how do I get the image into the newly created bmp. I tried using SetBitmapBits but no success. Obviously there is more preparations to do for this to work. Anyone done this before?

[Peter Ritchie]

In your CView-derived class's OnDraw:

CBitmap bmp;
if (bmp.LoadBitmap(IDB_BITMAP1))
{
// Get the size of the bitmap
BITMAP bmpInfo;
bmp.GetBitmap(&bmpInfo);

  // Create an in-memory DC compatible with the
  // display DC we're using to paint
  CDC dcMemory;
  dcMemory.CreateCompatibleDC(pDC);

  // Select the bitmap into the in-memory DC
  CBitmap\* pOldBitmap = dcMemory.SelectObject(&bmp);

  // Find a centerpoint for the bitmap in the client area
  CRect rect;
  GetClientRect(&rect);
  int nX = rect.left + (rect.Width() - bmpInfo.bmWidth) / 2;
  int nY = rect.top + (rect.Height() - bmpInfo.bmHeight) / 2;

  // Copy the bits from the in-memory DC into the on-
  // screen DC to actually do the painting. Use the centerpoint
  // we computed for the target offset.
  pDC->BitBlt(nX, nY, bmpInfo.bmWidth, bmpInfo.bmHeight, &dcMemory, 
     0, 0, SRCCOPY);

  dcMemory.SelectObject(pOldBitmap);

}

PeterRitchie.com