Is it possilbe to use the Graphics object for drawing onto a bitmap
that is 8bit greyscale or 8bit indexed color.
My application has to create a huge bitmap and I need it as small as
possible.

Has anyone got a suggestion better than creating my own drawing
functions and drawing onto a byte array?
thanks
jim

Per the MSDN documentation, you cannot create a Graphics object from an
indexed bitmap.

You can use GDI. Create your 8 bpp bitmap as a DIB (i.e., CreateDIBSection)
and use BitBlt or any of the GDI variations to draw to your 8bpp bitmap.

"chapmjw" <chapmjw (AT) gmail (DOT) com> wrote

Here is a good article on creating 8bit bitmaps in C#. You cannot use the graphics object and have to use lock and unlock methods or create a byte array and use the overloaded bitmap constructor that takes the pointer to the byte array.

http://www.iter.dk/dotnet/image/
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