From QB64.org wiki
This page is maintained for historic purposes. The keyword is not supported in QB64.
The SETMEM function is used to increase, decrease or return the current "far heap" byte size.
- Not supported in QB64.
- SETMEM(0) returns the total number of bytes currently in the far heap memory area.
- The byte size indicates the number of bytes to increase or decrease the far heap.
- If the byte size is negative, SETMEM decreases the far heap by the indicated number of bytes.
- If the byte size is positive, SETMEM attempts to increase the far heap space by the number of bytes.
- If SETMEM cannot change the far heap by the requested number of bytes, it reallocates as many bytes as possible.
- SETMEM can be used in mixed-language programming to decrease the far heap space so procedures in other languages can dynamically allocate far memory.
- Note: A first call to SETMEM trying to increase the far heap has no effect because Basic
- allocates as much memory as possible to the far heap when a program starts.