You mean basically what you'd pass to CreateDIBSection in Windows GDI? Well, you must know a few things about the bitmap data, like the width and height, or even just the stride (how many bytes in a line). You also need to know the pixel format, such as whether the data represents a 32-bit bitmap, 24-bit, etc. Fortunately, with this information GDI+ (and System.Graphics) makes this easy. Use the Bitmap(int, int, int, PixelFormat, IntPtr) constructor, which takes the width, height, stride, pixel format, and a pointer to the raw data, respectively. Read more about that constructor in the .NET Framework SDK for more information.
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