摘要：void CChildView::OnLButtonDown(UINT nFlags, CPoint point) { // TODO: Add your message handler code here and/or call default m_OriginPosition = point; m_draw = TRUE; m_old = point; CWnd ::OnLButtonDown(nFlags, point);}void CChildView::OnLButtonUp(UINT nFlags, CPoint point) { /* /... 阅读全文