Gets the GUID for this process.
HRESULT GetProcessId(
   GUID* pguidProcessId
);
int GetProcessId(
   out Guid pguidProcessId
);
Parameters
- pguidProcessId
[out] Returns the GUID for this process. 
Return Value
If successful, returns S_OK; otherwise, returns an error code.
Remarks
The Globally Unique IDentifier (GUID) identifies this process from all other processes running in the system.