为树视图创建Qt模型 [英] Creating Qt models for tree views

问题描述

我在Qt中编写一个应用程序（使用C ++），我需要在树视图中表示一个对象结构。这样做的一个方法是为此创建一个模型，但是我在阅读有关主题的Qt文档后仍然很困惑。

I'm writing an application in Qt (with C++) and I need to represent an object structure in a tree view. One of the ways to do this is to create a model for this, but I'm still quite confused after reading the Qt documentation about the subject.

结构我有很简单 - 有一个项目对象在 std中保存任务 ：vector 容器。这些任务也可以保存子任务。

The "structure" I have is pretty simple - there's a Project object that holds Task objects in a std::vector container. These tasks can also hold child tasks.

我已经写了方法来读取&使用Qt的XML类将这些项目写入/从XML文件中。

I've already written methods to read & write these projects to/from XML files using Qt's XML classes.

从头开始创建模型还有更多文档或推荐阅读吗？

Is there any more documentation or "recommended reading" for creating models from scratch? How do you recommend I start implementing this?

推荐答案

QTreeView newbies ，主要的挑战是理解 index（）和 parent（）。我之前写过一篇文章：

For QTreeView newbies, the main challenge is with understanding index() and parent(). I have written an article about this a while ago:

http： //www.hardcoded.net/articles/using_qtreeview_with_qabstractitemmodel.htm

示例代码是Python，但原则保持不变。

The example code is in Python, but the principles stay the same.

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