OpenProcess Failure (SeDebugPrivilege?)

Question

I'm trying to use OpenProcess, for some reason it keeps failing.

HANDLE GetProcessPid()
{
    DWORD pid = 0;
    wchar_t ProcessName[] = L"notepad.exe";

    // Create toolhelp snapshot.
    HANDLE snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
    PROCESSENTRY32 process;
    ZeroMemory(&process, sizeof(process));
    process.dwSize = sizeof(process);

    // Walkthrough all processes.
    if (Process32First(snapshot, &process))
    {
        do
        {
            if (wcscmp(process.szExeFile, ProcessName) == 0)
            {
                pid = process.th32ProcessID;
                break;
            }
        } while (Process32Next(snapshot, &process));
    }

    CloseHandle(snapshot);

    if (pid != 0)
    {
        return OpenProcess(PROCESS_ALL_ACCESS, FALSE, pid);
    }

    return NULL;
}

This always returns 0xcccccccccccccccc or 0x0000000000000020 even when I've set the pid manually when calling OpenProcess.

I've tried running as admin outside of debugging inside visual studio and get the same results, after searching, I think I need to enable debug priviledges (SeDebugPrivilege), how do I do this in visual studio 2013?

Answer 1

你的代码很好，你只需要以管理员身份运行你的可执行文件就可以了，我刚刚测试了它。