_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

displayMmToModel() [2/2] float MgCmdManagerImpl::displayMmToModel ( float  mm, const MgMotion *  sender  ) const privatevirtual 返回屏幕毫米长度对应的模型长度 实现了 MgCmdManager.