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15 年
QAbstractItemModel::data 调用的问题
目前在学习c++ gui qt的编程,就是第十章里面的钱币换算的程序有一个问题不太理解。 class CurrencyModel : public QAbstractTableModel CurrencyModel重写了data方法。可是我的问题是在CurrencyModel类没有对data进行调用,我想知道data方法是什么时候调用的是在父类吗??
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