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.NET Forum / .NET Framework / New Users / October 2006SetRop2 with GDI+
Hello, From what I can tell there is no equivalent in GDI+ to the SetRop2 API. Is this correct or have I missed something? I'm able to use GDI in some cases but not all. My rendering code only has access to a Graphics object and if this Graphics comes from a control or printer all goes well. If the Graphics object comes from a System.Drawing.Image, GDI does not work. Has anyone else come across this problem and possibly found a workaround? Thanks. > From what I can tell there is no equivalent in GDI+ to the SetRop2 API. > Is > this correct or have I missed something? It is correct. What you draw in GDI+ is independant of the surface you draw onto. > I'm able to use GDI in some cases but not all. My rendering code only has > access to a Graphics object and if this Graphics comes from a control or > printer all goes well. If the Graphics object comes from a > System.Drawing.Image, GDI does not work. I had some problem with Image's graphic. ScriptTextOut was looking awful. What's your problem? > Has anyone else come across this problem and possibly found a workaround? For my particular problem I used... aheum.. BufferedGraphics to draw on a bitmap. A bit .. kind of weird, but solved my rendering issue (text horribly aliased). > > I'm able to use GDI in some cases but not all. My rendering code only has > > access to a Graphics object and if this Graphics comes from a control or [quoted text clipped - 3 lines] > I had some problem with Image's graphic. ScriptTextOut was looking awful. > What's your problem? I'm using the R2_MASKPEN rop with various GDI drawing methods. When the Graphics comes from an Image it results in solid black. The only solution I could find was to modify the code to allow access to the Image object and manipulate the pixel data directly. It's a pain but the results are good. Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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