qt treeview 多层分级

在Qt中，我们可以使用QStandardItemModel来构建一个多层分级的TreeView。通过创建QStandardItem对象并将其添加到QStandardItemModel中，我们可以实现树状结构的展示。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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