> "drawing the glyphs dot by dot" is very fast

Why do you believe that?  You do not have a program that works, so you 
cannot have measured its speed!

> can you give me a idea to drawing the glyphs dot by
> dot?

1. Call 'lock' to get the start address of the image data.
2. Compute the address of the dot that you want to set, based on the 
start address, x and y coordinates, bits-per-pixel and image width.
3. Set the bits at that address to the colour that you want.


Phil.





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