backStep canAddPoint cancel checkClosed click Create doubleClick draw initialize m_index MgCmdDrawLines Name needCheckClosed needEnded release touchBegan touchEnded touchMoved ~MgCmdDrawLines

canAddPoint() bool MgCmdDrawLines::canAddPoint ( const MgMotion *  sender, const Point2d &  pnt  ) private 函数调用图: 这是这个函数的调用关系图: