acquireFrontDoc acquireFrontShapes clear create fromHandle getBackDoc getBackShapes getBackShapesHandle getTag GiPlaying impl isStopping release releaseDoc releaseShapes stop submitBackDoc submitBackShapes toHandle ~GiPlaying

getBackDoc() MgShapeDoc * GiPlaying::getBackDoc ( ) 得到修改图形用的图形文档 函数调用图: 这是这个函数的调用关系图: