浏览器获取焦点

					HWND hActiveWnd = GetForegroundWindow();//获得当前激活的窗口句柄
					DWORD SelfThreadId = GetCurrentThreadId();//获取本身的线程ID
					DWORD ForeThreadId = GetWindowThreadProcessId(hActiveWnd,NULL);//根据窗口句柄获取线程ID
					AttachThreadInput(ForeThreadId, SelfThreadId, true);//附加线程
					hActiveWnd = GetFocus();//获取具有输入焦点的窗口句柄

					if (hActiveWnd == GetClientMainWnd(hIEWindow) && hActiveWnd != hIEWindow)
					{
						::SetFocus(hIEWindow);
					}