backStep cancel click Create draw getStep hitTest initialize isIntersectMode longPress m_boxsel m_delIds MgCmdErase Name release touchBegan touchEnded touchMoved

initialize() bool MgCmdErase::initialize ( const MgMotion *  sender, MgStorage *  s  ) privatevirtual 开始命令 实现了 MgCommand. 这是这个函数的调用关系图: