GDI+ DrawImage() with transparent bitmap to a printer

Question

Does anybody have any pointers on how to successfully draw a bitmap that has an alpha channel using Graphics::DrawImage() when the Graphics context is created based on a printer HDC? The printer drivers don't generally support alpha blending - so is there an alternative to rendering everything to an offscreen bitmap and just sending that to the printer. This is often not feasible, especially for high res printing to large format printers.

Answer 1

What kind of printer is that? Regular printers don't print white. Create in-memory image and 'flatten' it (remove alpha channel) and then print the result.