获取当前焦点窗口进程名

void GetForegroundWindowProc(CString& szProcPath)
{
    HWND hWnd = ::GetForegroundWindow();
    WCHAR winClass[128];
    WCHAR winTitle[128];
    //通过句柄获取窗口类名
    ::GetClassName(hWnd, winClass, 128);

    //通过句柄获取窗口标题
    ::GetWindowText(hWnd, winTitle, 128);

    printf("!!!%s, winClass = %S!
", __FUNCTION__, winClass);
    printf("!!!%s, winTitle = %S!
", __FUNCTION__, winTitle);

    DWORD dwThreadId;
    DWORD dwProcId;
    dwThreadId = GetWindowThreadProcessId(hWnd, &dwProcId);
    printf("dwProcId = %ul
", dwProcId);
    printf("dwThreadId = %ul
", dwThreadId);

    HANDLE hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, dwProcId);
    WCHAR proname[MAX_PATH] = { 0 };

    DWORD dwRetLength = GetModuleFileNameEx(hProcess, NULL, proname, MAX_PATH);
    if (dwRetLength)
    {
        szProcPath = proname;
    }
}

bool ParseFileName(_In_ const CString& filePath, _Out_ CString& fileName)
{
    WCHAR fPath[MAX_PATH] = { 0 };
    PWCHAR pfTail;
    wcscpy_s(fPath, filePath.GetString());
    pfTail = fPath + filePath.GetLength();
    while (pfTail != fPath && *pfTail != L'\')
    {
        pfTail--;
    }
    if (pfTail == fPath)
        return false;
    fileName = ++pfTail;
    return true;
}