addRef clear clearCachedData clone cloneDoc context copy copyShapes createDoc draw dyndraw dyndraw equals findShape fromHandle getCurrentLayer getCurrentShapes getExtent getLastShape getLayerCount getPageRectW getShapeCount getType getViewScale im isKindOf isReadOnly load loadAll MgShapeDoc modelTransform release save saveAll setCurrentShapes setPageRectW setReadOnly shallowCopy switchLayer toHandle Type zoomToInitial ~MgShapeDoc

getExtent() Box2d MgShapeDoc::getExtent ( ) const 返回图形范围 函数调用图: 这是这个函数的调用关系图: