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48 lines
1.3 KiB
Markdown
48 lines
1.3 KiB
Markdown
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The [_MEMFILL](_MEMFILL) statement converts a value to a specified type, then fills memory with that type including any non-whole remainder.
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## Syntax
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> [_MEMFILL](_MEMFILL) memoryBlock, memoryBlock.OFFSET, fillBytes, value [AS variableType]
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## Parameter(s)
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* The memoryBlock [_MEM](_MEM) memory block is the block referenced to be filled.
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* memoryBlock.OFFSET is the starting offset of the above referenced memory block.
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* The fillBytes is the number of bytes to fill the memory block.
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* The value is the value to place in the memory block at the designated OFFSET position.
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* A literal or variable value can be optionally set [AS](AS) a variable [Variable Types](Variable-Types) appropriate for the memory block.
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## Description
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* To clear previous data from a [_MEMNEW](_MEMNEW) memory block, use _MEMFILL with a value of 0.
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## Example(s)
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Filling array values quickly using FOR loops or a simple memory fill.
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```vb
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DIM a(100, 100) AS LONG
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DIM b(100, 100) AS LONG
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'filling array a with value 13
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FOR i1 = 0 TO 100
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FOR i2 = 0 TO 100
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a(i1, i2) = 13
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NEXT
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NEXT
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'filling array b with value 13
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DIM mema AS _MEM
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mema = _MEM(b())
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_MEMFILL mema, mema.OFFSET, mema.SIZE, 13 AS LONG
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_MEMFREE mema
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```
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## See Also
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* [_MEM](_MEM), [_MEM (function)](_MEM-(function))
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* [_MEMIMAGE](_MEMIMAGE), [_MEMNEW](_MEMNEW)
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* [_MEMGET](_MEMGET), [_MEMPUT](_MEMPUT)
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