MEMFILL
From QB64 Wiki
The _MEMFILL statement converts a value to a specified type then fills memory with that type including any non-whole remainder.
- _MEMFILL memory_block, memory_block.OFFSET, fill_bytes, value [AS variable_type]
- The memory block _MEM memory block is the block referenced to be filled.
- The offset is the starting offset of the above referenced memory block.
- The fill bytes is the number of bytes to fill the memory block.
- The value is the value to place in the memory block at the designated OFFSET position.
- A literal or variable value can be optionally set AS a variable type appropriate for the memory block.
Usage:
- To clear previous data from a _MEMNEW memory block, use _MEMFILL with a zero value.
Example: Filling array values quickly using FOR loops or a simple memory fill.
DIM a(100, 100) AS LONG DIM b(100, 100) AS LONG 'filling array a with value 13 FOR i1 = 0 TO 100 FOR i2 = 0 TO 100 a(i1, i2) = 13 NEXT NEXT 'filling array b with value 13 DIM mema AS _MEM mema = _MEM(b()) _MEMFILL mema, mema.OFFSET, mema.SIZE, 13 AS LONG _MEMFREE mema
See also: