private IntPtr InitDocument()
{
if (!_useDP)
{
return(_pdfDoc.Handle);
}
_printHandle = Pdfium.FPDFPRINT_Open(
_pdfDoc.Handle,
string.Format("{0}-{1}", PrinterSettings.FromPage, PrinterSettings.ToPage),
DefaultPageSettings.PaperSize.Width / 100 * 72,
DefaultPageSettings.PaperSize.Height / 100 * 72,
(int)((double)DefaultPageSettings.PrintableArea.X / 100 * 72),
(int)((double)DefaultPageSettings.PrintableArea.Y / 100 * 72),
(int)((double)DefaultPageSettings.PrintableArea.Width / 100 * 72),
(int)((double)DefaultPageSettings.PrintableArea.Height / 100 * 72),
PrintScallingMode.PrintableArea);
if (_printHandle == IntPtr.Zero)
{
return(IntPtr.Zero);
}
_docForPrint = Pdfium.FPDFPRINT_GetDocument(_printHandle);
if (_docForPrint == IntPtr.Zero)
{
return(IntPtr.Zero);
}
return(_docForPrint);
}