Can i use wPDF Canvas HDC as hPrinterDC?

Hi Julian, i use an external DLL to view and print CAD draw.
I need to print the CAD draw into a PDF, the DLL have a function as this:

BOOL CadPrint (
VDWG hDwg, // handle to CAD object
BOOL bPrintStamp, // stamp's visibility
HDC hPrinterDC // handle to printer device context
);

Can i pass wPDF canvas HDC as hPrinterDC ?
I tryied to do that but i don't see nothing on the PDF, i need to set something else or what i try to do it's simply 'stupid'?

Best regards,
Enrico.

Hi Julian
i write the code below but nothing appear into the PDF file.
The produced PDF files are alwais (2.244 byte) big, the same size if i don't do the CadPrint ( hDwg, false, DC ); instruction.

I attach here my simple code any help would be appreciated.

Best regards,
Enrico

Zitat

double Resolution = 300; // Dpi
double ResolutionMM = Resolution / 25.4; // Dot per mm
double PaperW = 297; // A4 - Landscape
double PaperH = 210;

PDFprn->BeginDoc();
PDFprn->StartPage( (PaperW * ResolutionMM), (PaperH * ResolutionMM), Resolution, Resolution, 0);

// This procedure set on CadObject the rectangle of draw to be printed, the page size (A4 Landscape), margins and color/monocrome.
// See below
SetPrintScaleAndOrientation();

PDFprn->CanvasReference = wprefPrinter;
HDC DC = PDFprn->Canvas->Handle;

CadPrint ( hDwg, false, DC ); // DC will be the handle to printer device context

PDFprn->EndPage();
PDFprn->EndDoc();

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Zitat

void __fastcall SetPrintScaleAndOrientation(void)
{
double x0, y0, x1, y1, xc, yc;

CadGetExtentRect ( hDwg, &x0, &y0, &x1, &y1 );

// define a part of drawing to print (coordinates at display projection)
CadPrintPutRect( x0, y0, x1, y1 );

// set print parameters so the entire drawing fits to printer paper
int w = x1 - x0;
int h = y1 - y0;

// define best orientation
if (w > h)
CadPrintPutOrient( CAD_PAPER_LANDSCAPE );
else
CadPrintPutOrient( CAD_PAPER_PORTRAIT );

double PaperW = CadPrintGetPaperW();
double PaperH = CadPrintGetPaperH();

double scx = PaperW / w;
double scy = PaperH / h;
double scale = min( scx, scy ) * 0.99;

// define an output scale 1:x
CadPrintPutScale( scale );

// Centering draw on Paper: set margin left and top of paper
double lMargin = ( PaperW - (scale * w) ) / 2;
double tMargin = ( PaperH - (scale * h) ) / 2;
CadPrintPutOffset( lMargin, tMargin );

// Set monochrome or colored
CadPrintPutColor ( false /* monochrome = false */ );
}

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