[Mono-winforms-list] Creating printpreview using cairo + winforms

[rav]

Hi
I'm trying to print cairo image using winforms. When i create default print
preview dialog, the image created by cairo is very small. It's probably
caused by different resolutions of cairo and winforms. Is there any way to
fix it?? I tried to use fallbackresolution method of cairo win32surface,but
that doesnt work. Everything is ok when i print on dialog context but not on
printpreview:(

code:

private void CreatePagePreview(object sender, PrintPageEventArgs arg)
{
     Win32Surface w32s = new Win32Surface(arg.Graphics.GetHdc());
     Cairo.Context wcont= new Context(w32s);

     //...printing on cairo surface...

     w32s.Finish();
     g.ReleaseHdc(w32s.Handle);
     ((IDisposable)wcont).Dispose();
     g.Dispose();
}


I tried to create an image on ImageSurface and then copy it to win32surface
but that also doesnt work correctly

code: 

private void CreatePagePreview(object sender, PrintPageEventArgs arg)
{
     int Width = prtdoc.DefaultPageSettings.PaperSize.Width;
     int Height = prtdoc.DefaultPageSettings.PaperSize.Height;
     Cairo.ImageSurface img = new ImageSurface(Format.ARGB32,width, height);
     Cairo.Context cr = new Context(img);

     //...printing on cairo surface... 

     img.Finish();
     Cairo.Win32Surface w32s = new Win32Surface(arg.Graphics.GetHdc());
     Cairo.Context wcont= new Context(w32s);
     wcont.SetSourceSurface(img, 0, 0);
     w32s.Finish();
     g.ReleaseHdc(w32s.Handle);
     ((IDisposable)wcont).Dispose();
     ((IDisposable)cr).Dispose();
     g.Dispose();
}

Thanks for help and sorry for my english :)


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