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

cancel() bool MgCmdDrawLines::cancel ( const MgMotion *  sender ) privatevirtual 取消命令 重载 MgCommandDraw . 函数调用图: 这是这个函数的调用关系图: