DUILib 中的 caption="x1,y1,x2,y2" x1 距离左边界的距离;rcCaption.left y1 距离上边界的距离; rcCaption.top x2 距离右边界的距离;rcCaption.right y2 距离上边界的距离; rcCaption.bottom rcClient 为客户区域大小 标题栏范围: "rcClient.left + rcCaption.left(左边界坐标), rcCaption.top(上边界坐标), rcClient.right - rcCaption.right(右边界坐标), rcCaption.bottom(下边界坐标)“ 1 RECT rcCaption = m_PaintManager.GetCaptionRect();2 if( pt.x >= rcClient.left + rcCaption.left && pt.x < rcClient.right - rcCaption.right \3 && pt.y >= rcCaption.top && pt.y < rcCaption.bottom ) {4 CControlUI* pControl = static_cast(m_PaintManager.FindControl(pt));5 if( pControl && _tcsicmp(pControl->GetClass(), _T("ButtonUI")) != 0 && 6 _tcsicmp(pControl->GetClass(), _T("OptionUI")) != 0 &&7 _tcsicmp(pControl->GetClass(), _T("TextUI")) != 0 )8 return HTCAPTION;9 }