windows - GDI+ DrawImage() with transparent bitmap to a printer -
does have pointers on how draw bitmap has alpha channel using graphics::drawimage() when graphics context created based on printer hdc? printer drivers don't support alpha blending - there alternative rendering offscreen bitmap , sending printer. not feasible, high res printing large format printers.
what kind of printer that? regular printers don't print white. create in-memory image , 'flatten' (remove alpha channel) , print result.
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