Tree view model. The data structure that we use to represent the structure of the data takes the fo...
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Tree view model. The data structure that we use to represent the structure of the data takes the form of a tree built from TreeItem objects. This article introduces the TreeView and TreeViewItem controls, and provides examples of their use. 所有成员（包括继承成员）的列表 属性 rootIndex : QModelIndex (since 6. We start off the TreeView chapter with a simple example, where we define the items in markup, some even with images. This burden is placed on the delegate. Any item in the hierarchy may have child items, and items that have children may be expanded or collapsed to show or hide the children. 4) bool isExpanded (row) toggleExpanded (row) 详细说明 TreeView 有 The treeview component is a user interface that is used to represent hierarchical data in a tree structure. 4) expandToIndex (QModelIndex index) (since 6. Each TreeItem represents an item in a tree view, and contains several columns of data. 6) 信号 collapsed (row, recursively) expanded (row, depth) 方法 collapse (row) collapseRecursively (row) (since 6.
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