LocalFlags

Returns information about a local memory object, including its lock count and discardable status.

UINT WINAPI LocalFlags(
HLOCAL hMem
);

hMem – Handle to the memory object.

The low‑order byte of the low‑order word contains the lock count. Use LMEM_LOCKCOUNT to mask this value.

The high‑order byte of the low‑order word indicates the allocation attributes (e.g., LMEM_DISCARDABLE, LMEM_DISCARDED).

If the handle is invalid, the function returns LMEM_INVALID_HANDLE (0x7FFF).

For fixed objects, the lock count is always zero.

Can be used to determine whether a block has been discarded (by checking for LMEM_DISCARDED in the high‑order byte).

UINT flags = LocalFlags(hMem);
if (flags != LMEM_INVALID_HANDLE) {
WORD lockCount = flags & LMEM_LOCKCOUNT;
if (flags & 0x0F00) ... // discardable/discarded
}

push hMem
call LocalFlags
and ax, LMEM_LOCKCOUNT ; extract lock count

• LocalLock
• LocalUnlock