有没有一种可靠的方法来使用C#激活/设置焦点到窗口？

Windows created in different threads typically process input independently of each other. That is,they have their own input states (focus,active,capture windows,key state,queue status,and so on),and they are not synchronized with the input processing of other threads. By using the AttachThreadInput function,a thread can attach its input processing to another thread. This also allows threads to share their input states,so they can call the SetFocus function to set the keyboard focus to a window of a different thread. This also allows threads to get key-state information. These capabilities are not generally possible.

我不确定从(大概)Windows窗体使用此API的后果.也就是说,我在C中使用它来获得这种效果.代码如下所示：

DWORD currentThreadId = GetCurrentThreadId();
     DWORD otherThreadId = GetWindowThreadProcessId(targetHwnd,NULL);
     if( otherThreadId == 0 ) return 1;
     if( otherThreadId != currentThreadId )
     {
       AttachThreadInput(currentThreadId,otherThreadId,TRUE);
     }

     SetActiveWindow(targetHwnd);

     if( otherThreadId != currentThreadId )
     {
       AttachThreadInput(currentThreadId,FALSE);
     }

targetHwnd是您要设置焦点的窗口的HWND.我假设您已经可以使用P / Invoke签名,因为您已经在使用本机API.