我有许多CGContextRef(仅作4)。 我想从这些背景中获取数据,并更新一个全球背景,以便所有背景数据都应在适当地点更新,我必须随时更新全球(主要)环境,以了解其他情况。
我如何做到这一点,怎样才能做到这一点?
预付款。 我确实赞赏你的时间。
你的其他情况(除了主要背景之外)确保这些背景是比特图背景。 然后,你可以绘制一份标出的地图,并将这份蓝图放在主要方面。
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