将应用程序置于前台

Question

我必须使用它的名字将 window 放在前台，例如 "images"。有

findWindowW(NULL, stringName)

我得到进程的句柄 (HWND)。然后用

SetForegroundWindow(windowHandle);

我想我把它自动放到前台了，但我必须按'Enter'。我做错了什么还是有另一种方法可以做到这一点？我也可以使用进程的 PID。
我的最终目的是在将其放入前台后向该进程发送CTRL + V之类的快捷方式。谢谢。

Answer 1

来自 MSDN

The system restricts which processes can set the foreground window. A process can set the foreground window only if one of the following conditions is true:

The process is the foreground process.

The process was started by the foreground process.

The process received the last input event.

There is no foreground process.

The process is being debugged.

The foreground process is not a Modern Application or the Start Screen.

The foreground is not locked (see LockSetForegroundWindow).

The foreground lock time-out has expired (see SPI_GETFOREGROUNDLOCKTIMEOUT in SystemParametersInfo).

No menus are active.

所以，如果你的程序不符合上述情况，则不能自动设置前台。

我认为你可以使用下面的代码来处理你的情况，这个 link 也可以提供帮助。

void SetForegroundWindowForce(HWND hWnd)
{
   HWND hWndForeground = ::GetForegroundWindow();
   if(hWndForeground == hWnd) return;

   DWORD Strange = ::GetWindowThreadProcessId(hWndForeground, NULL);
   DWORD My = ::GetWindowThreadProcessId(hWnd, NULL);
   if( !::AttachThreadInput(My, Strange, TRUE) )
   {
      ASSERT(0);
   }
   ::SetForegroundWindow(hWnd);
   ::BringWindowToTop(hWnd);
   if( !::AttachThreadInput(My, Strange, FALSE) )
   {
      ASSERT(0);
   }
}

将应用程序置于前台

Put application to foreground

windows

c++11

process

foreground