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例如,如果我调整 a 中子项的大小,只为父索引发出一个信号QAbstractItemModel就足够了,还是应该为每个孩子发出一个信号?dataChanged
QAbstractItemModel
dataChanged
在我的测试中,仅仅为父索引发出一个 dataChanged 信号是不够的。