Bitmap printing -> tiny printed picture ??
When i call this procedure to print a bitmap loaded from a file(the bitmap is a desktop capture 1280x1024) the printed picture is much much smaller!(about 240x190)
a sample output(print to pdf):
Output Sample
Code:
void PrintBitmap() {
CPrintDialog printDlg(FALSE);
printDlg.GetDefaults();
CDC dc;
dc.Attach(printDlg.GetPrinterDC());
// Initialise print document details
DOCINFO di;
::ZeroMemory (&di, sizeof (DOCINFO));
di.cbSize = sizeof (DOCINFO);
BOOL bPrintingOK = dc.StartDoc(&di); // Begin a new print job
dc.StartPage(); // begin new page
// Get the bitmap from disk
CBitmap bitmap;
bitmap.Attach(::LoadImage( ::GetModuleHandle(NULL), "C:\\temp1.bmp", IMAGE_BITMAP, 0, 0,
LR_LOADFROMFILE | LR_CREATEDIBSECTION | LR_DEFAULTSIZE));
CDC memDC;
memDC.CreateCompatibleDC(&dc);
CBitmap *pBmp = memDC.SelectObject(&bitmap);
BITMAP bm;
bitmap.GetBitmap(&bm); // for width and height
// copy to printDC
dc.BitBlt(0, 0, bm.bmWidth, bm.bmHeight, &memDC, 0, 0, SRCCOPY);
memDC.SelectObject(pBmp);
if (bPrintingOK)
dc.EndDoc(); // end a print job
else dc.AbortDoc(); // abort job.
}
any ideas ? :(
Re: Bitmap printing -> tiny printed picture ??
Are you taking into consideration that a BMP on a screen is shown at about 72 dpi, and the same BMP on a printer will be at LEAST 300 dpi? Maybe 1200 dpi?
StretchBlt it to the actual printer DC cooridantes of the page and see it that fixes it.
Re: Bitmap printing -> tiny printed picture ??
