Does anyone know of a utility / winapi call etc to convert a BMP file into a format that can be then be embedded into a RTF file ?

By reverse engineering a word document with an embedded BMP file I can figure out what the RTF commands are - but then there is a large blob of (hex?) data - being the embedded BMP file - which appears to be different to the data in the originating BMP file.

i.e. it seems you just cant drop a BMP file as-is into the RTF file. It appears to need to be converted into a different format first (what that format is I am not sure)

PS: I need to do this without making calls to MS word. (or linking to the BMP file - which I have already figured out)

Cheers
Russ