程序的窗口句柄时结束该程序的进程

    　　如果只要判断EXE的名字（不需要判断路径），可以省略EnumProcess，因为
    pe32.szExeFile 里就已经有EXE的名字了，因为没有路径，所以才又使用了
    函数EnumProcess来取得完整的路径。这样就简洁一些了。
    BOOL CALLBACK EnumWinProc(HWND hwnd, LPARAM lParam)
    {
        DWord dwID;

        GetWindowThreadProcessId(hwnd, &dwID);
        if (dwID == (DWORD)lParam) {
            PostMessage(hwnd, WM_QU99v, 0, 0);
            return FALSE;
        }
        return TRUE;
    }

    void KillProgram(LPCSTR ExeName)
    {
        char *File;
        HANDLE hProcessSnap;
        PROCESSENTRY32 pe32;

        if (!ExeName !ExeName[0])
            return;
        File = strrchr(ExeName, '\\');
        if (File!=0) ExeName = File+1;
        hProcessSnap = CreateToolhelp32Snapshot(
            TH32CS_SNAPPROCESS, 0);
        if (hProcessSnap == (HANDLE)-1) return;

        memset(&pe32, 0, sizeof(pe32));
        pe32.dwSize = sizeof(PROCESSENTRY32);
        if (Process32First(hProcessSnap, &pe32))
        {
            do {
                memset(&me32, 0, sizeof(me32));
                me32.dwSize = sizeof(me32);
               File = strrchr(pe32.szExeFile, '\\');
                File = File? File+1 : pe32.szExeFile;
                if (strcmpi(File,ExeName)==0) {
                    EnumWindows((WNDENUMPROC)EnumWinProc,
                       pe32.th32ProcessID);
                }
            }
            while(Process32Next(hProcessSnap,&pe32));
        }
        CloseHandle(hProcessSnap);
    }