激活_目标窗口

1、http://blog.csdn.net/oxunfeng/article/details/52681279

1.  ::ShowWindow(m_hWnd, SW_SHOWNORMAL);
2.  ::SetActiveWindow(main_window_->m_hWnd);
3.  ::SetForegroundWindow(main_window_->m_hWnd);
4.  ::SwitchToThisWindow(main_window_->m_hWnd, TRUE);
5.  ::SetWindowPos

// 以上几种方法在部分系统下仍旧可能出问题，推荐以下方法   兼容性较好
HWND  hCurWnd = ::GetForegroundWindow();
DWORD dwMyID  = ::GetCurrentThreadId();
DWORD dwCurID = ::GetWindowThreadProcessId(hCurWnd, NULL);
::AttachThreadInput(dwCurID, dwMyID, TRUE);
::SetForegroundWindow(main_window_->m_hWnd);
::AttachThreadInput(dwCurID, dwMyID, FALSE);

2、我的代码：（_hDestWnd 是要激活的目标窗口的窗口句柄）

procedure TfrmMain.Wnd_Active(_hDestWnd: HWnd);
var dwMyThreadID :DWORD;
    dwDestThreadID :DWORD;
begin// http://blog.csdn.net/oxunfeng/article/details/52681279
  dwMyThreadID := GetCurrentThreadId();
  dwDestThreadID := GetWindowThreadProcessId(_hDestWnd, nil);
  AttachThreadInput(dwDestThreadID, dwMyThreadID, TRUE);
  SetForegroundWindow(_hDestWnd);
  AttachThreadInput(dwDestThreadID, dwMyThreadID, FALSE);
end;

3、