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c++winapihandle

How to determine that two Win32 API handles represent the same object?

Suppose I have two hanldes:

HANDLE h1;
HANDLE h2;

And both have received values resulted from some Windows API function - in particular, I'm interesed in handles resulted from calls to CreateFile(). How do I determine that h1 and h2 reference the same underlying object - in the case of CreateFile() - same file, directory or device? Is there some API to determine that?

Solution

  • You could use GetFinalPathNameByHandle and compare the file path of both handles. https://msdn.microsoft.com/en-us/library/windows/desktop/aa364962(v=vs.85).aspx