XPS to GDI conversion

Hi

i want to use XPS to GDI conversion path for GDI based printer.

From MSDN i came to know that

The XPSDrv model also provides a converter for XPS to GDI format so that Win32 applications can print XPS Documents.

Can anybody help me how can i get a postscript as an output from a XPS printer Driver.

Regards

Abhishek

I don't think there's any code/samples for converting XPS to postscript in the WDK... and I think it's not that easy to do...

another thing you should donwload is the "Microsoft Xml Paperspecification", where all of XPS is described and you could use for your conversion...

_______

@CTA: "How about having last filter as PDL filter that generates PS output."

do you have an example for how to add a PDL filter or any link would be interesting for me too.. (c;

This is not a direct answer to your question, but maybe this can help:

A possibility is to use the the Harlequin XPS reference RIP Microsoft bought some time ago (http://www.microsoft.com/whdc/device/print/RRIP.mspx).

This includes an XPS filter. As far as I know, it cannot generate PostScript, but can generate a TIFF from the the XPS pages. From there, in another filter placed after the Harlequin filter, you could convert the TIFF image to a PostScript image that could be printed by a PostScript printer. The conversion would be an easy matter in that case, either doing that programmatically yourself, or using one of the many converters on the market.

Not sure that covers your need, only my 2 cents! ;-)

/Sas

Converting XPS to BMP, JPG, TIFF... is quite easy to do with the RenderTarget-Class...

public void SaveXpsPageToBitmap(string xpsFileName)
{
XpsDocument xpsDoc = new XpsDocument(xpsFileName, System.IO.FileAccess.Read);
FixedDocumentSequence docSeq = xpsDoc.GetFixedDocumentSequence();

int pageCount = docSeq.References[0].GetDocument(false).Pages.Count;

// You can get the total page count from docSeq.PageCount
for(int pageNum = 0; pageNum < pageCount; pageNum ++)
{
DocumentPage docPage = docSeq.DocumentPaginator.GetPage(pageNum);
BitmapImage bitmap = new BitmapImage();
RenderTargetBitmap renderTarget =
new RenderTargetBitmap((int)docPage.Size.Width,
(int)docPage.Size.Height,
96, // WPF (Avalon) units are 96dpi based
96,
System.Windows.Media.PixelFormats.Pbgra32);
renderTarget.Render(docPage.Visual);

BitmapEncoder encoder = new BmpBitmapEncoder(); // Choose type here ie: JpegBitmapEncoder, TiffBitmapEncoder etc.
encoder.Frames.Add(BitmapFrame.Create(renderTarget));

FileStream pageOutStream = new FileStream(xpsFileName + ".Page" + pageNum + ".bmp", FileMode.Create, FileAccess.Write);
encoder.Save(pageOutStream);
pageOutStream.Close();
}
}