Print a Real Image Size in Inches

1.	Define the following global variables:

LBitmapBase BitmapBase; // bitmap
L_FLOAT fRealWidth; // Image's real width in inches
L_FLOAT fRealHeight; // Image's real height in inches
L_FLOAT fPrnDPIX; // Number of pixels per logical inch along the screen width
L_FLOAT fPrnDPIY; // Number of pixels per logical inch along the screen height

2.	Load the image in a LEAD bitmap:

BitmapBase.Load(TEXT("C:\\IMAGE1.CMP"), 0, ORDER_BGR);

3.	Calculate the real width and height of the bitmap in inches:

fRealWidth = (L_FLOAT)BitmapBase.GetWidth() / (L_FLOAT)BitmapBase.GetXResolution();
fRealHeight = (L_FLOAT)BitmapBase.GetHeight() / (L_FLOAT)BitmapBase.GetYResolution();

4.	Get the printer device context:

HDC hdcPrinter = NULL; // Printer device context
LPrint LeadPrint(&BitmapBase); // LEAD Print

hdcPrinter = LeadPrint.GetPrinterDC();

5.	Get the width and height DPI:

fPrnDPIX = (L_FLOAT)GetDeviceCaps(hdcPrinter, LOGPIXELSX);
fPrnDPIY = (L_FLOAT)GetDeviceCaps(hdcPrinter, LOGPIXELSY);

6.	Now you are ready to print the image with real size in inches:

if(LeadPrint.IsValid() && hdcPrinter)
LeadPrint.Print(hdcPrinter, 1, 1, (L_INT)(fRealWidth * fPrnDPIX), (L_INT)(fRealHeight * fPrnDPIX));