HeapSize

HeapSize returns the size, in bytes, of a memory block allocated from a heap by HeapAlloc or HeapReAlloc.

Syntax

DWORD HeapSize(
    HANDLE hHeap,
    DWORD Flags,
    LPCVOID lpMem
);

Parameters

hHeap

The heap in which the memory block resides. This handle is returned by GetProcessHeap.

Flags

Ignored.

lpMem

A pointer to the memory block whose size the function will obtain. This pointer is returned by HeapAlloc or HeapReAlloc.

Return Value

The size, in bytes, of the allocated memory block if the function succeeds, 0XFFFFFFFF if the function fails

The function does not call SetLastError. An application cannot call GetLastError for extended error information.

Requirements