The ZeroMemory function fills a block of memory with zeros.
VOID ZeroMemory(
| 
 PVOID Destination,  | 
 // address of block to fill with zeros  | 
| 
 DWORD Length  | 
 // size, in bytes, of block to fill with zeros  | 
| 
 );  | 
This function has no return value.
CopyMemory, FillMemory, MoveMemory