HANDLE LockData(dummy)
The LockData macro locks the current data segment in memory. It is intended to be used in modules that have movable data segments.
dummy
This parameter is ignored.
The return value identifies the locked data segment if the function is successful. Otherwise, it is NULL.
The LockData macro is defined in WINDOWS.H as follows:
#define LockData(dummy) LockSegment((UINT)-1)