This command will set any future bitmap created to the following format. Be aware that not all surface formats support a render target bitmap. Here are some common values you can set:20 24-bit RGB pixel format with 8 bits per channel. 21 32-bit ARGB pixel format with alpha, using 8 bits per channel. 22 32-bit RGB pixel format, where 8 bits are reserved for each color. 23 16-bit RGB pixel format with 5 bits for red, 6 bits for green, and 5 bits for blue. 24 16-bit pixel format where 5 bits are reserved for each color. 25 16-bit pixel format where 5 bits are reserved for each color and 1 bit is reserved for alpha. 26 16-bit ARGB pixel format with 4 bits for each channel. 32 32-bit ARGB pixel format with alpha, using 8 bits per channel. 33 32-bit RGB pixel format, where 8 bits are reserved for each color.

Syntax: 
SET BITMAP FORMAT Bitmap Format Number