HDC hdc = ::GetDC(m_hWnd); RECT rect = { 10,10,100,100 }; BOOL b = IsRectEmpty(&rect); //返回值:如果矩形为空,则返回值为非零。如果矩形不为空,则返回值为零 CString str; str.Format(_T("b=%d"),b ); ::OutputDebugString(str);
- 矩形 MFC-IsRectEmpty IsRectEmpty MFC矩形mfc-isrectempty isrectempty mfc mfc-isrectempty 矩形mfc-rectangle rectangle mfc 矩形mfc-getwindowrect边框getwindowrect 矩形mfc-fillrect fillrect mfc 矩形mfc-setrectempty坐标setrectempty 集部 矩形mfc-unionrect unionrect 矩形mfc-offsetrect offsetrect mfc 矩形 坐标 拷贝mfc-copyrect 矩形 坐标mfc-setrect setrect