CompuServe Thread

Hi, a C programmer has a question for some of you amigabasic people. I am trying to open a screen on an interlaced window and I want to draw a circle on it and fill it in with the PAINT command. My screen is 640×400 with 2 bit planes (interlaced), and the window I want is from (1,1)-(630,380) on this screen. As soon as the program attempts to execute the WINDOW statement, the screen scrolls down a little, like when you get a GURU Med. and it says "out of heap space" According to the basic manual, it will allocate memory for a bit map for the screen from the heap, (this would be 640x400x2 bits or 64000 bytes) and then it states the window must be opened with a mode of 16 through 31, I presume this corresponds in C to SMART_REFRESH, so there would be an additional 630x380x2 bits or 59850 bytes. This totals to 123850 bytes. Basic's statement fre(-1) which is supposed to return the number of bytes available in the heap, prints 229112 on my machine. This seems like more than enough, so what is going on. Between this, and microsoft basic constantly crashing the amiga, or beeping illegal function calls at me and the slowness of its windows I feel like jumping up and down on the disk very hard and throwing it out the window. I'd rather use C than this fuss-budget basic, but the project is already started in basic. Any ideas anybody? Thanks to any basic guru's out there, my basic rusted away years ago.