Windows 获取进程ID

DWORD GetProcessID(const char *ProcessName)
{
    PROCESSENTRY32 pe32;

    pe32.dwSize = sizeof(PROCESSENTRY32);

    //获取进程快照
    HANDLE hProcessSnap = ::CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
    if (hProcessSnap == INVALID_HANDLE_VALUE)
    {
        printf("CreateToolhelp32Snapshot 调用失败.
");
        return -1;
    }

    //遍历进程快照，轮流显示每个进程的信息
    BOOL bMore = ::Process32First(hProcessSnap, &pe32);
    while (bMore)
    {
        printf("进程名称：%ls
", pe32.szExeFile); //这里得到的应该是宽字符，用%ls,不然无法正常打印
        printf("进程ID：%u

", pe32.th32ProcessID);
        if (lstrcmp(pe32.szExeFile, ProcessName) == 0)
        {
            break;
        }

        bMore = ::Process32Next(hProcessSnap, &pe32);
    }

    //不要忘记清除掉snapshot对象
    ::CloseHandle(hProcessSnap);

    return pe32.th32ProcessID;
}

int main()
{
    DWORD ID;
    const char *name = "sscom32.exe";

    ID = GetProcessID(name);

    printf("GetProcessId %s %u
", name, ID);

    while (1);

    return 0;
}

需要配置

或者

DWORD GetProcessID(LPCWSTR ProcessName)
{
    PROCESSENTRY32 pe32;

    pe32.dwSize = sizeof(PROCESSENTRY32);

    //获取进程快照
    HANDLE hProcessSnap = ::CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
    if (hProcessSnap == INVALID_HANDLE_VALUE)
    {
        printf("CreateToolhelp32Snapshot 调用失败.
");
        return -1;
    }

    //遍历进程快照，轮流显示每个进程的信息
    BOOL bMore = ::Process32First(hProcessSnap, &pe32);
    while (bMore)
    {
        //printf("进程名称：%ls
", pe32.szExeFile); //这里得到的应该是宽字符，用%ls,不然无法正常打印
        //printf("进程ID：%u

", pe32.th32ProcessID);
        if (lstrcmp(pe32.szExeFile, ProcessName) == 0)
        {
            break;
        }

        bMore = ::Process32Next(hProcessSnap, &pe32);
    }

    //不要忘记清除掉snapshot对象
    ::CloseHandle(hProcessSnap);

    return pe32.th32ProcessID;
}

int main()
{
    DWORD ID;
    LPCWSTR name = _T("sscom32.exe");

    ID = GetProcessID(name);

    printf("GetProcessId %ls %u
", name, ID);

    while (1);

    return 0;
}