SetForegroundWindow() 正确用法：激活一个窗口并前台显示

激活窗口，并前台显示：

//如果最小化了窗口, 就先恢复
if(IsIconic(hWnd))
{
    ShowWindow(hWnd, SW_RESTORE);
}

//激活窗口，并前台显示窗口
HWND hForeWnd = GetForegroundWindow();
DWORD dwCurID = GetCurrentThreadId();
DWORD dwForeID = GetWindowThreadProcessId(hForeWnd, NULL);
AttachThreadInput(dwCurID, dwForeID, TRUE);
//ShowWindow(hWnd, SW_SHOWNORMAL);
SetWindowPos(hWnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE);
SetWindowPos(hWnd, HWND_NOTOPMOST, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE);
SetForegroundWindow(hWnd); //前台显示
AttachThreadInput(dwCurID, dwForeID, FALSE);

来自：https://www.cnblogs.com/dengpeng1004/p/5049646.html