c++ - 进程后的 CloseHandle 不存在

Question

我做了一个简单的例子。

我只想知道在将 handle 重新附加到新进程之前是否需要关闭 handle ？

DWORD g_dwPid = 0;
HANDLE g_hProcess;
int _tWinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow) {

    while (TRUE) {

        DWORD dwPid = GetProcessIdByName(L"explorer.exe");
        if (dwPid && dwPid != g_dwPid) {
            g_dwPid = dwPid;

            g_hProcess = ::OpenProcess(PROCESS_ALL_ACCESS, FALSE, g_dwPid);
        }
        else
            CloseHandle(g_hProcess);

        Sleep(500);
    }
    return 0;
}

Answer 1

是的，您应该始终关闭 OpenProcess 返回的句柄当你完成它时。

来自 documentation :

When you are finished with the handle, be sure to close it using the CloseHandle function.