Source code of Windows XP (NT5)
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/*++
Copyright (c) 1992 Microsoft Corporation
Module Name:
genapp.c
Abstract:
Resource DLL for Generic Applications.
Author:
Rod Gamache (rodga) 8-Jan-1996
Revision History:
--*/
#include "nt.h"
#include "ntpsapi.h"
#include "windef.h"
#include "winerror.h"
DWORD
GetProcessId(
IN HANDLE ProcessHandle,
OUT LPDWORD ProcessId
)
/*++
Routine Description:
Get the process Id for a process, given its process handle.
Arguments:
ProcessHandle - the handle for the process to query.
ProcessId - pointer to a DWORD to receive the process Id.
Return Value:
ERROR_SUCCESS if successful.
ERROR_INVALID_PARAMETER on error.
--*/
{
DWORD status;
DWORD returnLength;
PROCESS_BASIC_INFORMATION basicProcessInfo;
//
// Find the process id.
//
status = NtQueryInformationProcess( ProcessHandle,
ProcessBasicInformation,
&basicProcessInfo,
sizeof(PROCESS_BASIC_INFORMATION),
&returnLength );
if ( !NT_SUCCESS(status) ) {
*ProcessId = 0;
return(ERROR_INVALID_PARAMETER);
}
*ProcessId = (DWORD)basicProcessInfo.UniqueProcessId;
return(ERROR_SUCCESS);
} // GetProcessId