GlobalSize

The GlobalSize function retrieves the current size, in bytes, of the specified global memory object.

Note  The global functions are slower than other memory management functions and do not provide as many features. Therefore, new applications should use the heap functions. However, the global functions are still used with DDE and the clipboard functions.

DWORD GlobalSize(
  HGLOBAL hMem   // handle to global memory object
);

Parameters

hMem

[in] Handle to the global memory object. This handle is returned by either the GlobalAlloc or GlobalReAlloc function.

Return Values

If the function succeeds, the return value is the size, in bytes, of the specified global memory object.

If the specified handle is not valid or if the object has been discarded, the return value is zero. To get extended error information, call GetLastError.

Remarks

The size of a memory block may be larger than the size requested when the memory was allocated.

To verify that the specified object's memory block has not been discarded, use the GlobalFlags function before calling GlobalSize.

Requirements

  Windows NT/2000: Requires Windows NT 3.1 or later.
  Windows 95/98: Requires Windows 95 or later.
  Header: Declared in Winbase.h; include Windows.h.
  Library: Use Kernel32.lib.

See Also

Memory Management Overview, Memory Management Functions, GlobalAlloc, GlobalFlags, GlobalReAlloc