22 marzo 2001
Claudio Rocchini
57
Messaggi: ButtonDown
•void CGrapheditView::OnLButtonDown(UINT nFlags, CPoint point)
•{ start_node = pDoc->FindNode(point);
•  if(start_node!=-1)
•  { end_node = start_node;
•    start_drag = end_drag =
• pDoc->nodes[start_node].p; 
•   drag_arc();
•   SetCapture();
•   captured = true;
•} }