Sorry your browser is not supported!

I am running Dark Basic Professional Version 1.071 under Windows 7, 64 bit.

I need a method to:
(1) Load a 'picture' of size 8872 x 6472 pixels,
(2) Extract a sub-picture from it using specified coordinates x1,y1 (upper left hand corner) and x2,y2 (lower right hand corner),
(3) Save the resulting sub-picture to a file.

I use the word 'picture' to mean bitmap, image, sprite, or combinations thereof - whatever will accomplish my goal.

I plan to use this method in a loop to generate a series of sub-pictures. I do not need to display anything on the screen, as I am only interested in the resulting files.

Any help or advice would be greatly appreciated. Thank you all.

Here is how I would do it.
1. Load the 'picture' file in using LOAD BITMAP.
2. Use GET IMAGE command to grab the particular sub-picture area you want.
3. Use MAKE MEMBLOCK FROM IMAGE to convert it to a memblock.
4. Write the memblock to a file using WRITE MEMBLOCK.