_cmdname _cmds _drawcmd _factories _guildpt _ignoreStart _newShapeID _ptSnap _snapBase _snapHandle _snapHandleSrc _snapShapeId _snapType _startpt _subject addImageShape addImageShape cancel checkResult clearSnap CMDS displayMmToModel displayMmToModel doAction doContextAction drawPerpMark drawPerpMark drawSnap dynamicChangeEnded eraseWnd Factories findCommand freeSubject getActionDispatcher getBoundingBox getCmdSubject getCommand getCommandName getCommandName getNewShapeID getSelection getSelection getSelectionForChange getSnap getSnapOptions getSnappedHandle getSnappedPoint getSnappedPoint getSnappedType MgCmdManagerImpl registerCommand release setCommand setIgnoreStartPoint setNewShapeID setSnapOptions showInDrawing showInSelect snapPoint switchCommand unloadCommands ~MgCmdManagerImpl

getSelectionForChange() int MgCmdManagerImpl::getSelectionForChange ( MgView *  view, int  count, MgShape **  shapes  ) privatevirtual 得到当前选择的图形的临时图形，用于修改 将复制临时图形，动态修改完后要调用 dynamicChangeEnded() 参数 view 当前操作的视图 count 最多获取多少个图形，为0时返回实际个数 shapes 填充当前选择的图形对象 返回 获取多少个图形，或实际个数 实现了 MgCmdManager. 函数调用图: 这是这个函数的调用关系图: