c – 如何获取进程的文件句柄？

#include <windows.h>
#include <process.h>
#include <TlHelp32.h>
#include <winbase.h>
#include <String.h>
void killProcessByName(const char *fileName)
{
    HANDLE hSnapShot = CreateToolHelp32Snapshot(TH32CS_SNAPALL,null);
    PROCESSENTRY32 pEntry;
    pEntry.dwSize = sizeof (pEntry);
    BOOL hRes = Process32First(hSnapShot,&pEntry);
    while (hRes)
    {
        if (strcmp(pEntry.szExeFile,fileName) == 0)
        {
            HANDLE hProcess = OpenProcess(PROCESS_TERMINATE,(DWORD) pEntry.th32ProcessID);
            if (hProcess != NULL)
            { 
                CloseHandle(hProcess);
            }
        }
        hRes = Process32Next(hSnapShot,&pEntry);
    }
    CloseHandle(hSnapShot);
}
int main()
{
    killProcessByName("WINWORD.EXE");
    return 0;
}

代码工作正常,但所需的句柄没有被释放.
比较(strcmp)部分有问题吗？
或者还有别的我做错了吗？