Qtreewidget vs qtreeview.

• Qtreewidget vs qtreeview Qt中QTreeWidget比QTreeView更简单，但没有QTreeView那么灵活（QTreeWidget封装的和MFC的CTreeCtrl很类似，没有mvc的特点）。 初始化. QTreeView: List of all members, including inherited members The QTreeWidget class is a convenience class that provides a standard tree widget with a classic item Jan 7, 2019 · In my QTreeView when a user clicks an item in the list, i popup a dialog beneath the clicked treeview item. 继承和用途：; QTreeView 是基于 Qt 的模型-视图框架（Model-View Framework）的一部分，通常与自定义的数据模型（例如 QAbstractItemModel 的子类）一起使用。 在QTreeWidget的构造中，调用了QTreeView::setModel(new QTreeModel(1, this));，这样我们在使用时，其实只关心QTreeWidget 和QTreeWidgetItem这两个类即可。那么接下来，分析一下这三个类的成员变量，基本就能看出是如何存储我们的数据，也就知道了为何效率比较低。 Mar 17, 2020 · When you have a hierarchical data model and you want to present the data visually, Tree view widget is probably the best choice. Generally, each TreeItem has a parent item, and can have a number of child items. 0. Jan 10, 2007 · Hi, this is my first post to the forum. 7. Apr 26, 2025 · Alternatives to QTreeView. QtGui. The QTreeWidgetItem class represents the item of the tree. A QTreeView has rows and columns. setExpanded(True)的命令，但均未成功。下面是我的测试应用程序的代码：import sysfrom PyQt5. 14: Track Editor: QTableWidget: Custom delegate providing a custom editor: Book 1, Chapter 10, Figure 10. 树形结构实现QT GUI中有treeWidget部件，将该控件在Gui中布局好，假设其对 Jan 29, 2020 · 在PyQt学习中，QTreeView是一个非常有用的UI控件，它可以用于展示树形结构数据。而在实际开发中，我们可能需要隐藏这个控件的标题头，这时候就需要使用QTreeView的headerHidden属性了。 Jan 15, 2024 · QTreeView是一个强大的Qt控件，用于显示树形结构的数据。如果要设置QTreeView中首节点的生成位置，可以通过以下步骤完成： 1. 看了一遍官網上所有內建函示後, 因為發現沒有認識的函式名, 我決定回去參考我之前寫的 QTreeWidget, 看看能不能把在 QTreeWidget 用過的拿來使用 May 23, 2022 · 由于我们尚未指定 QTreeWidget 新控件要显示的数据内容，因此初始状态下的 QTreeWidget 控件如图 2 所示，不包含任何内容。图 2 中显示的数字 1，是 QTreeWidget 控件中的表头，默认情况下 QTreeWidget 只有一个表头，表头的内容就是 1。 Dec 20, 2022 · QT-QTreeView使用方法 QTreeView: 用于显示树状结构数据，适用于树状结构数据的操作。 一、初始化 利用QStandardlternModel来初始化数据，标准的基于项数据的数据模型类， 每个项数据可以是任何数据类型。 Mar 9, 2013 · Thanks to this thread, I'm able to add widgets to 2nd or later column of QAbstractItemView (in my example QTreeView) of top level items of a view. ) I thought maybe I could make a function in my view that would be called after the view is populated, to check for any items that need to have their Aug 13, 2023 · 您可以使用QDomDocument类来将QTreeView保存为XML文件。 下面是一个简单的示例代码： ```cpp void saveTreeViewToXML(QTreeView* treeView 首页 Qt creator 将QTreeView保存XML This application-specific widget augments the stock :class:`QTreeWidget` with additional support for horizontal scrollbars, automatically displaying horizontal scrollbars for all columns whose content exceeds that column's width. Share. painter. QTableView For displaying data in a tabular format. expanded() signal is emitted with the model index of the relevant item. Apr 25, 2018 · PyQt5中QTreeView双击事件获取节点路径信息 (2018-02-26 22:11:10) 要实现题目的结果要慢慢讲，首先从继承关系上讲，QTreeWidget是QTreeView的子类，作为子类必然能更细致化和精细化实现特定功能。一般的，树形结构是通过QTreeWidget和QTreeWidgetItem类实现的。. A QTreeView implements a tree representation of items from a model. Sep 14, 2023 · QTreeView 和 QTreeWidget 都是 Qt 中用于显示树形结构数据的部件，但它们之间存在一些重要的区别：. Sep 14, 2016 · But before that, let me give a short lecture on how QTreeWidget actually works on Qt, so the codes will be easy to follow. 5. 1、根据搜索框的内容匹配下面的索引，找到则显示该字段及该字段的上下索引； 2、当找不到该内容则全都不显示； A QTreeView implements a tree representation of items from a model. To create a tree widget, you follow these steps: First, create a QTreeWidget object: Dec 18, 2023 · QTreeWidget 是 Qt 中的树形控件组件，用于显示树形结构的数据。它继承自 QTreeView 和 QTreeWidget，提供了一个方便的方式来展示和编辑包含层次结构数据的项目。 以下是 QTreeWidget 类的一些常用方法，说明和概述： Qt中实现树形结构可以使用QTreeWidget类,也可以使用QTreeView类,QTreeWidget继承自QTreeView类. If this property is true all columns will show focus, otherwise only one column will show focus. Just remember to turn this on /after/ you initially populate the widget, and turn it off again /before/ doing any bulk updates for efficiency. 5k次，点赞58次，收藏36次。QTreeView中item节点任意拖拽移动，添加，删除与自绘指示器,拖拽事件dragEnterEvent，dragMoveEvent，mimeData，dropMimeData，mimeTypes，supportedDropActions处理，DropIndicatorPosition使用，QProxyStyle自定义实现_qtreeview 拖拽 Sep 24, 2023 · QtreeView是ui中最常用的控件，Qt中QTreeWidget比QTreeView更简单，但没有QTreeView那么灵活（QTreeWidget封装的和MFC的CTreeCtrl很类似，没有MVC的特点）。 1. Ask Question Asked 11 years, 4 months ago. qtreewidget用于数据简单，数据项少，解耦程度要求低的场合。 Jun 27, 2019 · 文章浏览阅读2. ExpandAll()和. This class is used to provide standard hierarchical lists that were previously provided by the QListView class, but using the more flexible approach provided by Qt's model/view architecture. It works against the good practice of separatng the views and the models, and probably shouldn't be used in a system where the notion of document layers belongs in the document handling code. See also addTopLevelItem() and columnCount(). May 10, 2018 · 本文介绍我在使用QTreeView过程中，常用的样式设置方法。 介绍内容是与我自己的项目界面风格相关，并不是完整的介绍所有样式。 关于QTreeView完整的样式设置，可以参考博主一去丶二三里的文章： Qt之QSS（QTreeView） 2，常用样式设置. Nov 9, 2022 · QTreeWidgetItem *topItem2 = new QTreeWidgetItem(ui->treeWidget); topItem2->setText(0,"腾讯"); topItem2->setCheckState(0,Qt::Checked); ui->treeWidget 在响应 QTreeView. The QTreeWidget class provides a tree view that uses a predefined tree model. I made TreeModel to set data for Jun 7, 2022 · 在QTreeWidget中树结构的每一项都是一个QTreeWidgetItem，通过对它的设置可以修改树的显示效果，对于树的三态切换需要处理QTreeWidget中的一个信号： 当某一个节点被选中或者取消选中的时候需要处理以下情况： May 31, 2016 · 在 QTreeWidget 中查找一个已知所有父项的子项，可以通过遍历树结构并匹配每一层的父项来实现。这个函数接受 QTreeWidget 指针和一个包含父项标签的 QStringList。它从 QTreeWidget 的顶级开始，并逐层向下搜索，每次都匹配当前层级的父项。 Nov 27, 2018 · I started using a QTreeView Widget for representing my entities of a a database. Hold one instance of the widget and initialize it and paint it with QWidget::render() (no need to render it in. 共同的信号和槽机制：QTreeView 和 QTreeWidget 都支持信号和槽机制，可以在用户与控件交互时响应相应的事件。 3. QTreeWidget inherits from QTreeView and provides a higher-level interface for managing tree data. 9k次，点赞12次，收藏20次。大家都知道，QTreeWidget每行是通过QTreeWidgetItem来描述的，也就是说如果对Item单独设置属性的话，使得某一行可以编辑或者不可编辑：QTreeWidgetItem* item = new QTreeWidgetItem(ui. h源文件、cpp源文件、其它文章等等操作。 Sep 27, 2022 · "set" 開頭的成員函式來看的話, QTreeView 好像比 QTreeWidget 更多功能, 總之我們先來直接使用吧. 本文详细的介绍了QTreeView、QTreeWidget控件的各种操作，例如：新建界面、控件布局、设置列、设置宽高、设置列表头、设置复选框、设置图标、添加树、删除树、查找树、修改树、设置选中、树排序、事件、信号、槽函数、添加节点、默认选中、. 开发工具：vs2019. Comments on best practices for QTreeView would be great as well! My QTreeWidget code currently Oct 11, 2016 · Qt QTreeVirew 与 QTreeWidget 简单使用. So can you tell me what I should use to do the same as the old QListView from QT3? Aug 5, 2016 · Comparing QTreeView/QAbstractItemModel to QTreeWidget. Although this makes the tree model less flexible, and possibly less useful for use with more sophisticated views, it makes it less complex to design and easier to Mar 27, 2019 · @Dariusz said in QTreeView & QStyledItemDelegate & QPushButton/Checkbox etc?: I do wonder if that is the best way to do it? for anything other than checkboxes (there is already built-in support) this is the most perfomant way. I would like to have two columns, one for the property name and one for the setting/value. In this photo, I used QTreeWidget (with static data). Mar 24, 2024 · 主要是修改QTreeWidget（或者是QTreeView）的界面问题。 官方的帮助文档其实起到很大的作用，网上的资料比较杂，而且普遍描述得不清楚。 今天花了一些时间解决了项目中遇到的一些小问题，虽然都不是很严重的问题，但是对于刚刚接触Qt的新人而言，应该也算是 Aug 22, 2023 · QTreeWidget是Qt中一个用于显示树形结构数据的控件，它继承自QTreeView，可以显示多列数据和树形结构的层次关系，还提供了许多交互功能。 Apr 26, 2025 · Qt QTreeView: A Comprehensive Guide . But is it possible to add widgets to the children Apr 8, 2019 · QTreeWidget vs QtreeView - I understand the difference is around the data being stored within the widget vs in a data model and the widget just displaying that data - but I don't know the right way to go for me and this application. void QTreeWidget:: insertTopLevelItems (int index, const QList < QTreeWidgetItem *> &items) Jun 22, 2020 · The advantage of using QTreeView over QTreeWidget is its performance. Unlike QDirModel(obsolete) which we discussed in Qt 5 Tutorial, ModelView with QTreeView and QDirModel, QFileSystemModel uses a separate thread to populate itself so it will not cause the main thread to hang as the file system is being queried. 18 05:58 浏览量：9. Let's consider an example like this: you displayed your information with QTreeWidget. QTreeWidget. QTreeWidget 类继承自 QTreeView 类，QTreeView 类也可以用来创建树形控件。 QTreeWidget 可以看作“简易版”或“升级版”的 QTreeView，前者的使用方式更加简单，入门门槛低，对于刚刚接触 Qt 的初学者，我建议先学习 QTreeWidget 控件。 Qt5 Tutorial: ModelView with QTreeView and QDirModel. QTreeView. Explore alternative views if QTreeView is not the best fit for your application. 9. QStandardItemModel在 QTreeView 中的使用 使用 QTreeView 的对应模型是 QStandardItemModel，这个是 Qt 对应ui界面最有用的模型 本文详细的介绍了QTreeView、QTreeWidget控件的各种操作，例如：新建界面、控件布局、设置列、设置宽高、设置列表头、设置复选框、设置图标、添加树、删除树、查找树、修改树、设置选中、树排序、事件、信号、槽函数、添加节点、默认选中、. > 1000) and are planning on having custom controls in those rows (QComboBox is the most expensive one), then QTreeView is better. It is a part of the PyQt6 module and provides a variety of methods to add, remove, and manipulate tree items. 树形效果如下图所示: 这是怎么实现的呢?还有点击节点时会有相应的事件响应. Sep 22, 2024 · QTreeWidget\QTreeView的关系和区别. The items of the tree have parent/child relationships. Feb 3, 2025 · QTreeWidget\QTreeView的关系和区别. In Qt, QTreeView is a class that provides a visual representation for hierarchical data. The documentations shows two options for that. This still separates the way that data is stored from the way that it is presented to the user, but provides a simpler framework based on the same principles. You can also create a data model and display it using a QTreeView, but that is not in the scope of this tutorial. – Feb 8, 2024 · 默认情况下，当你创建一个新的 QTreeView 实例并且添加了模型数据，它并不会自动选择根节点。如果你想让根节点在初始化时被选中，你需要通过设置相应的属性或者在添加模型数据之后手动触发选择操作。 Apr 15, 2015 · 文章浏览阅读1. Then to disable the items, just hook on to QTreeWidgets. (예 : 파일 탐색기 등) Qt에서는 이러한 Tree 구조 데이터를 보여줄 수 있는 수단으로 QTreeWidget과 QTreeView라는 클래스를 제공한다. Sep 22, 2021 · 我有这个QTreeWidget，我希望在默认情况下展开它。我已经读过这个问题很多次了，但这些解决方案对我来说都不起作用。我尝试了针对树根目录的命令：. e. 本次博文总结下Qt基于项的项目控件组QTreeWidget，其继承 QTreeView。QTreeWidget 类提供了一个使用预定义树模型的树视图。QTreeWidget 类是一个便捷的类，它提供了一个标准的树小部件，具有一个类似于 qt3 中的QListView 类所使用的基于项目的经典接口。 Jun 6, 2016 · Seem like the standard QTreeWidget doesn't allow this. Nov 4, 2014 · You can subclass QItemDelegate and implement painter() to accomplish this. QTreeView is just a view, without any bundled models. PyQt Tree Widget, adding check boxes for May 11, 2020 · 1 #ifndef MYDLG_H 2 #define MYDLG_H 3 4 #include <QDialog> 5 #include <QTreeWidget> 6 #include <map> 7 using namespace std; 8 9 namespace Ui { 10 class MyDlg; 11} 12 13 class MyDlg : public QDialog 14 { 15 Q_OBJECT 16 17 public: 18 explicit MyDlg(QWidget *parent = 0); 19 ~ MyDlg(); 20 21 private slots: 22 void on_btnQuit_clicked(); 23 void QTreeWidget\QTreeView的关系和区别 QTreeWidget 类继承自 QTreeView 类，QTreeView 类也可以用来创建树形控件。 QTreeWidget 可以看作“简易版”或“升级版”的 QTreeView，前者的使用方式更加简单，入门门槛低，对于刚刚接触 Qt 的初学者，我建议先学习 QTreeWidget 控件。 May 26, 2020 · 1 #ifndef MANAGETREEXML_H 2 #define MANAGETREEXML_H 3 #include <QTreeWidget> 4 #include <QDomDocument> 5 6 class ManageTreeXml 7 { 8 public: 9 ManageTreeXml(); 10 11 bool SaveTreeXml(QTreeWidget* pTree, QString xmlPath); 12 bool LoadTreeXml(QTreeWidget* pTree, QString xmlPath); 13 private: 14 bool showXml(QTreeWidget* pTree, QDomDocument *pDoc 今天继续来说一下PyQt的常用控件之QTreeWidget和QTreeView，两者的区别与QList相同就不赘述了，直接到使用环节。 Dec 3, 2021 · 本文介绍了在Qt项目中如何设置QTreeView或QTreeWidget的行间距。 传统样式表方法如`padding`和`margin`只能改变行高，无法调整间距。 通过深入Qt文档，发现可以重写`drawRow`函数来实现这一需求。 Nov 6, 2024 · Qt treewidgetitem设置选中状态，由于项目需要，第一次接触到QT样式表。主要是修改QTreeWidget（或者是QTreeView）的界面问题。官方的帮助文档其实起到很大的作用，网上的资料比较杂，而且普遍描述得不清楚。 Jul 23, 2020 · 本文详细的介绍了QTreeView、QTreeWidget控件的各种操作，例如：新建界面、控件布局、设置列、设置宽高、设置列表头、设置复选框、设置图标、添加树、删除树、查找树、修改树、设置选中、树排序、事件、信号、槽函数、添加节点、默认选中、. TreeView in Python+QT. h源文件、cpp源文件、其它文章等等 Apr 26, 2025 · Alternatives to QTreeView. Aug 5, 2021 · QT的QTreeWidget实现搜索框的效果 一、实现的环境. Jun 6, 2024 · 在本教程中，我们将使用 Qt 的 QTreeWidget 控件实现一个复杂的树控件功能。该树控件包含多个层级的项目，并支持右键菜单操作。我们将详细介绍 QTreeWidget 的使用方法，包括控件布局、列设置、项目管理、查询、排序、信号处理等。_qtreewidget 排序 May 29, 2022 · QTreeView 和 QStandardItemModel的使用 QtreeView是ui中最常用的控件，Qt中QTreeWidget比QTreeView更简单，但没有QTreeView那么灵活（QTreeWidget封装的和MFC的CTreeCtrl很类似，没有mvc的特点）。 1. 2k次，点赞5次，收藏7次。文章介绍了如何在Qt应用程序中使用QTreeView和QTreeWidget展示文件目录，包括自定义默认展开指定路径和所有目录的方法，以及遍历并插入子目录的过程。 Jan 17, 2024 · QT QTreeView和QTreeWidget控件使用详解 作者：demo 2024. 默认的QTreeView是这样的： Nov 24, 2022 · QTreeWidget\QTreeView的关系和区别. But QTreeWidget has it's internal model in some way along with the methods to deal with model in context of indexes. QStandardItemModel在 QTreeView 中的使用 使用 QTreeView 的对应模型是QStandardItemModel，这个是Qt对应ui界面最有用 Oct 7, 2006 · Hi, I am trying to use QTreeView or QTreeWidget as a property setting tool. Then populates a QStandardItemModel in the following fashion; QStandardItemModel * model = new QStandardItemModel; QStandardItemItem * parentItem = model->invisibleRootItem(); I iterate over my data instantiating new child items to be added to the model. collapsed() or PySide. I think there are two ways to do this: Use a QTreeView with your own class derived from QAbstractItemModel and override the flags function. QTreeWidget is a convenience wrapper around QTreeView. 1w次，点赞19次，收藏87次。QTreeWidget是Qt中一个用于显示树形结构数据的控件，它继承自QTreeView，可以显示多列数据和树形结构的层次关系，还提供了许多交互功能。可以支持单选、多选和可编辑的节点，还可以自定义节点的样式和布局。 Mar 5, 2024 · 文章浏览阅读1. QtCore import Qtfrom Py Jul 17, 2015 · 文章浏览阅读2. It would be great if someone could modify the QTreeView code so it does what my QTreeWidget code does. g. QTreeWidget A simpler alternative to QTreeView for managing hierarchical data, but with less flexibility. 1w次，点赞7次，收藏45次。本文介绍如何使用Qt实现树形控件中的节点重命名功能，包括设置节点可编辑、通过右键菜单启动编辑及捕捉编辑完成事件等关键步骤。 Feb 2, 2014 · Just an addition to answer by Frank Osterfeld: QTreeView displays all columns of subtables inserted into top level QStandardItems. This property holds whether items should show keyboard focus using all columns. a pixmap). Apr 25, 2018 · QTreeView. The same goes for the other question (which was puzzlingly accepted): I'm mystified because I can't seem to find proxyModel even for QTreeWidget, in 5. However, I only want this to happen when the user Left clicks. If the view and the controller objects are combined, the result is the model/view architecture. allColumnsShowFocus ¶ Return type:. h源文件、cpp源文件、其它文章等等操作。 Jul 24, 2015 · I was trying to accomplish this with QTreeView. Apr 4, 2023 · 文章浏览阅读1. How to modify the QTreeWidget? 1. I want to react to the event of a new entity selection in the treeview, so I can update the state of other widget so they correspond to the current selection of the treeview. translate(15, 0) seems to fix this issue, but a weird effect appears when I select a row: the selection is not continuous. ui 文件的设计模式下拖入 Tree View 和 Tree Widget Mar 5, 2009 · In the QT examples, they use a number of different things like QTreeview, QTableView, QDirModel and stuff like that, but they all use them at the same time so I don't know what does what. Yes, that's right but the question was about QTreeView. In the property name column I want a tree structure with categories (as parents to properties) and properties. For unknown reasons, the stock :class:`QTreeWidget` intentionally omits this functionality. 相似的 API 接口：QTreeView 和 QTreeWidget 的 API 接口很相似，例如设置根节点、添加节点、删除节点等操作都有相应的函数。 Jun 7, 2022 · 在QTreeWidget中树结构的每一项都是一个QTreeWidgetItem，通过对它的设置可以修改树的显示效果，对于树的三态切换需要处理QTreeWidget中的一个信号： 当某一个节点被选中或者取消选中的时候需要处理以下情况： Nov 27, 2018 · I started using a QTreeView Widget for representing my entities of a a database. 15 docs at least. 看了一遍官網上所有內建函示後, 因為發現沒有認識的函式名, 我決定回去參考我之前寫的 QTreeWidget, 看看能不能把在 QTreeWidget 用過的拿來使用 Customizing the checkboxes of the items of a QTreeView. Then when you add the item just set the appropriate column to allow edits: Here's some code for the second void QTreeWidget:: insertTopLevelItem (int index, QTreeWidgetItem *item) Inserts the item at index in the top level in the view. Oct 8, 2022 · 直接用qtreewidget，使用例子 qtreeview和qtreewidget[ansys简单示例]-Java架构师必看 ; 用模型/视图，用qt提供的标准QstandItemModel，可以看我这篇博客： 用模型/视图，子类化QAbstractItemModel方式; 先讲结论： 结论. 01. (In QTreeWidget) 1. h源文件、cpp源文件、其它文章等等操作。 Aug 26, 2023 · 文章浏览阅读4. 9w次，点赞2次，收藏5次。本文详细介绍了QTreeView和QTreeWidget的概念及其使用方法，包括如何通过QTreeWidget进行元素的插入和删除操作，并提到了QAbstractTableModel与QTreeWidget的结合使用。 Jan 29, 2019 · v 5. How to implement checkbox in header of QtreeView. Since QTreeView provides a row-oriented view onto a model, it is natural to choose a row-oriented design for data structures that will supply data via a model to this kind of view. If the item has already been inserted somewhere else it won't be inserted. Sep 23, 2019 · 一、如下图树形结构 二、实现代码 model 为私有变量，QStandardItemModel *model; GetItem为递归函数，这样可以遍历到所有的节点 Dec 26, 2023 · QSS样式设置使用没有使用png图片而是使用SVG图片，因为SVG是矢量图不会在界面尺寸变化时发生失真。QTreeWidget节点样式设置有两种方式，一种是通过setStyle；一种是通过QSS样式。SetStyle方法。_qtreewidget 设置父节点与子节点有连线 This application-specific widget augments the stock :class:`QTreeWidget` with additional support for horizontal scrollbars, automatically displaying horizontal scrollbars for all columns whose content exceeds that column's width. how set QCheckBox in QAbstractItemModel? 1. Mar 12, 2015 · Edit: For some reasons I use delegates to draw the content of the QTreeView, that's why styling the QTreeView::item doesn't work ( like @svlasov suggested ). However, I can't really figure out where/when to call this (and maybe I'm going about things completely wrong to begin with. The data is stored internally in the model using TreeItem objects that are linked together in a pointer-based tree structure. The QTreeView class is one of the Model/View Classes and is part of Qt's model/view Qt5 Tutorial: ModelView with QTreeView and QFileSystemModel. You must set alternatingRowColors to false for it to work (else you have to subclass QTreeView to provide implementations of how alternating colors should behave); In the example below, I had no data in the rootnodes except column 1 and 5 and I needed column 5 to be spanned through column 5 to 7: The QTreeWidget class is a convenience class that provides a standard tree widget with a classic item-based interface similar to that used by the QListView class in Qt 3. QTreeWidget is in deed QTreeView with internal model & methods that deals with model in context of indexes. itemSelectionChanged() signal. QTreeWidget 类继承自 QTreeView 类，QTreeView 类也可以用来创建树形控件。 QTreeWidget 可以看作“简易版”或“升级版”的 QTreeView，前者的使用方式更加简单，入门门槛低，对于刚刚接触 Qt 的初学者，我建议先学习 QTreeWidget 控件。 Mar 20, 2008 · 文章浏览阅读1. QStandardItemModel在QTreeView中的使用 使用QTree Simple Tree Model Structure. 也就是默认值。不修改的话是根据需要显示滚动条的。我在QTreeView里面添加了item item里面有文本或者点击扩展按钮扩展tree的时候，结果水平方向没有滚动条，导致部分文本不可见。 Aug 3, 2011 · QTreeView/QTreeWidget inherit QAbstractItemView, so it is available. qtreewidget用于数据简单，数据项少，解耦程度要求低的场合。 Nov 7, 2007 · QTreeView is meant to use with ItemModels i. 4k次。最近要用QT开发项目，对QT不是很熟，就根据网上的查到的知识和自己的摸索，将一些经验和知识记录下来。方便自己后续查找。这个博客主要是QTreeview的节点折叠和展开。_qtreeview展开节点 Feb 26, 2025 · 01 YOLOv8入门 | 重要性能衡量指标、训练结果评价及分析及影响mAP的因素【发论文关注的指标】 02 从零安装 LLaMA-Factory 微调 Qwen 大模型成功及所有的坑 03 KGG转MP3工具|非KGM文件|解密音频 04 【解决】Android Gradle Sync 报错 Could not read workspace metadata 05 【SpeedAI科研小助手】2分钟极速解决知网维普重复率、AIGC QTreeView: Custom model based on QAbstractItemModel: Read only: Book 1, Chapter 10, Figure 10. I'm beginning to dabble with QT5, my first home project is a Filesystem explorer similar to TreeSize for Windows (Why? cause the concept is easy but requires quite a few moving parts) which scans a set path and all sub-directories, populating the tree with The QTreeWidget class is a convenience class that provides a standard tree widget with a classic item-based interface similar to that used by the QListView class in Qt 3. h源文件、cpp源文件、其它文章等等 Jul 23, 2020 · 本文详细的介绍了QTreeView、QTreeWidget控件的各种操作，例如：新建界面、控件布局、设置列、设置宽高、设置列表头、设置复选框、设置图标、添加树、删除树、查找树、修改树、设置选中、树排序、事件、信号、槽函数、添加节点、默认选中、. This class is based on Qt’s Model/View architecture and uses a default model to hold items, each of which is a QTreeWidgetItem . Nevertheless, QTreeWidget provides columns, icons, you can place other widgets (buttons, labels, …) into a tree item and it is fully drag and drop enabled. If you are planning on displaying an insane amount of rows (e. 首先，需要创建一个QTreeView对象，并将其添加到主窗口或其他容器窗口中。 2. Use a QTreeView with a QStandardItemModel. Jul 1, 2015 · Also, most examples manually populate the QTreeView which doesn't help me much either. The QTreeView class is one of the Model/View Classes and is part of Qt's model/view Jul 5, 2019 · 而在QTreeView中，有一个很重要的属性expandsOnDoubleClick，即双击展开属性。默认情况下，expandsOnDoubleClick属性是开启的，也就是说，当用户双击QTreeView中的某一项时，这个项会被展开。在这个示例中，我们创建了一个QTreeView，并将它的expandsOnDoubleClick属性设置为False。 在项目设置中，为你的项目命名并选择保存的路径。在本教程中，我们学习了如何使用Qt框架中的QTreeView类来创建树形视图。通过上面的代码，我们创建了一个QStandardItemModel对象作为数据模型，并将其设置为QTreeView的模型。 Introduction to the PyQt QTreeWidget class # The QTreeWidget class allows you to create a tree view widget that consists of items. Think of it as a tree-like structure where you can expand and collapse branches to explore the data. Is there a way to draw gridlines so that each row and column is clearly outlined or just vertical lines to separate columns? I looked at Qt Designer and their Property Editor does this. Jan 8, 2015 · If your data is stored in a database model or if you want to have a single data model and show it in some views in different ways, then you are definitely better to go with QTreeView. Dec 17, 2013 · autoExpandDelay属性是QTreeView控件的一个成员属性，用来控制当用户单击某个节点并且该节点具有子节点时是否自动展开其子节点以及展开的延迟时间。在使用Qt框架中的QTreeView控件进行树形结构的展示时，可能会遇到需要当用户点击某个节点时自动展开子节点的需求。 Feb 25, 2022 · 更灵活的方法包括将QTreeView与标准项目模型相结合。 QTreeWidget类是一个方便的类，它提供了一个标准的树小部件，带有一个 Apr 2, 2022 · And, in any case, that's for QTreeWidget items: QTreeWidget is a higher level class based on QTreeView; please read more carefully what item view convenience classes are, specifically, as the QTreeWidget description explains: "The QTreeWidget class provides a tree view that uses a predefined tree model. 本文详细的介绍了QTreeView、QTreeWidget控件的各种操作，例如：新建界面、QTreeWidget、QTreeView、控件布局、设置列、设置宽高、设置列表头、设置复选框、设置图标、添加树、删除树、查找树、修改树、设置选中、树排序、事件、信号、槽函数、添加节点、默认选中、. treeWidget);/// 设置某一行的内容可编辑item->setFlags(Qt::ItemIsEnabled | Qt:_qttreewidget setflags Jan 17, 2020 · QTreeView/QTreeWidget设置行间距 由于项目要求，需要设置Tree行的间距，在网上搜索发现大多数都是用的样式表 QTreeView::item{ padding:10px; } 或者 QTreeView::item{ margin:10px; } 但是在使用中发现这个样式只能修改行高，无法修改间距。 May 24, 2018 · PyQt5中QTreeView双击事件获取节点路径信息 (2018-02-26 22:11:10) 要实现题目的结果要慢慢讲，首先从继承关系上讲，QTreeWidget是QTreeView的子类，作为子类必然能更细致化和精细化实现特定功能。一般的，树形结构是通过QTreeWidget和QTreeWidgetItem类实现的。 When this state changes a PySide. A tree view or an outline view is a graphical control element that presents a hierarchical view of information. 新建 Widgets 项目; 在 mainwindow. 15: Four directory views: QListView QTableView QTreeView: QDirModel: Demonstrates the use of multiple views: Book2, Chapter 8. When you have a Jan 4, 2022 · 어플리케이션을 개발하다 보면 Tree 구조 형태의 데이터를 보여주어야 하는 일들이 있다. 树形结构实现 QT GUI中有treeWidget部件,将该控件在Gui中布局好,假设其对象名为treeWidget. setFirstColumnSpanned. Which model is the most appriopriate in this case for QTreeView? 0. QtWidgets. I have an application that queries for data on a network. Key Features Sep 2, 2022 · Qt中实现树形结构可以使用QTreeWidget类，也可以使用QTreeView类，QTreeWidget继承自QTreeView类。一、常用属性（可通过设计器直接设置） 函数 作用 header()->setVisible(false); 设置标题头是否显示 header()->setDefaultSectionSize(200); 设置标题头默认的尺寸 void setSortingEnabled(bool enable); 设置点击标题头排序 void set Jul 11, 2013 · I have seen this question asked before, but I did not quite see an answer that cleared it up for me. indentation() property. In this PyQt5 tutorial, we are going to graph a hierarchical data set using the QTreeView widget. I made TreeModel to set data for Jul 31, 2024 · 2. hide()，并踢出 visible_widgets 列表。 采用全局共享 QMovie 的方法能有效降低 CPU 开销 。 五、在 QTreeView 中显示自定义 widget 的一些坑 Oct 23, 2024 · QTreeWidget is a convenient class for handling and displaying hierarchical data. 2025-04-26. Dec 15, 2022 · QTreeView和QTreeWidget是Qt框架中用于显示树形结构数据的两个类。 QTreeView是一个基于模型-视图架构的类，它通过使用QAbstractItemModel类来管理数据，并通过QTreeView类来显示数据。它提供了一种灵活的方式来 Apr 24, 2018 · 树形控件是非常常用的，例如组织结构、目录树、省市县的地区结构等都是典型的树形结构，Qt 里可以使用 QTreeView 和 QTreeWidget 来展示树形结构，这里我们只介绍 QTreeView 的使用，QTreeView 本身只用于树的显示，树的数据由 QStandardItemModel 来存储。 创建单列树创建单列树的节点分两种情况： 创建第一 PySide2. QTreeView. Jun 21, 2024 · 5、获取当前选中项 通过QTreeView函数 currentIndex ()可以获取当前选中条目的QModelIndex，QModelIndex可以看做是QStandardItem的数据封装，知道 QModelIndex就可以知道QStandardItem，通过QStandardItemModel的 itemFromIndex 函数即可得到QModelIndex对应的QStandardItem。 Apr 25, 2018 · QTreeView. By using a pre-defined tree model, it provides very easy access at the cost of flexibility. bool. Modified 11 years, QTreeView vs setIndexWidget. 1k次。默认QTreeView的滚动条设置是Qt::ScrollBarAsNeeded. QTreeWidget 是 QTreeView 的子类. Currently this popup is displayed when the user both right-clicks and left clicks. In general if you just want something that is Feb 20, 2016 · Meanwhile QTreeView-QAbstractItemModel approach gives you more flexibility during application developing despite it can look difficult first time. 15. 1. itemsExpandable()，以及针对子目录. May 17, 2020 · QtreeView是ui中最常用的控件，Qt中QTreeWidget比QTreeView更简单，但没有QTreeView那么灵活（QTreeWidget封装的和MFC的CTreeCtrl很类似，没有mvc的特点）。 1. 简介：本文将详细介绍QT中的QTreeView和QTreeWidget控件，包括它们的特性、使用方法和常见问题。通过本文，读者将能深入理解这两个控件，并在实际项目中灵活运用。 Apr 16, 2012 · Qt中实现树形结构可以使用QTreeWidget类，也可以使用QTreeView类，QTreeWidget继承自QTreeView类。树形效果如下图所示：这是怎么实现的呢？还有点击节点时会有相应的事件响应。1. Mar 28, 2014 · QTreeWidget is a model and a view in one class, it's called a convenience view. Code Example: Creating a Basic QTreeWidget Apr 29, 2024 · const QString styles = "QTreeView\ {\ background-color: #5B677A;\ font-size:17px;\ color: white;\ }\ QTreeView::item:hover\ {\ background: qlineargradient(x1: 0, y1 Dec 16, 2016 · QTreeWidget Tree; QTreeWidgetItem *item ; item = new QTreeWidgetItem(Tree); item->setText(0, text); item->setIcon(0, QIcon("your icon path or file name ")); item->setExpanded( true ); Custom Model : If you want more freedom, you will have to create your own implementation of QAbstractItemModel , because your nodes will have different graphical Jul 11, 2015 · You are calling the right function, it actually returns a QModelIndexList which is just a typedef for QList<QModelIndex> with the QModelIndex being the data structure that can point to any part of the tree. 9w次，点赞2次，收藏8次。在使用QTreeWidget时，默认是带有虚线的，如下图所示： qtreewidget节点显示 现在需要将这些节点之间的虚线去掉，可采用两种方式，一种是在代码中添加控件的样式，另外一种是在qtcreator中直接设置样式。 Jul 18, 2018 · 1 InformationPositionSubTableView::InformationPositionSubTableView(QStringList& columnNameList,QList& positionItemList,QWidget *parent) : m_Co Jul 3, 2018 · connect(ui->treeWidget,&QTreeWidget::itemChanged,this,&Widget::ItemCheckChanged); 节点勾选状态的改变，1，需要改变其子节点的状态；2 ，需要改变父节点的状态； 子节点的状态改变，通过一个递归就可以实现，要么全部勾选，要么全部不勾选： Sep 2, 2022 · 这里以10个一级节点班级，每个班级1W个学生，共10W条记录的数据量测试： QStandardItemModel 方法程序占用总内存大概160多M，而自定义model 占用的30多M。 Sep 4, 2015 · Rewrite QTreeWidget >>> QTreeView with checkbox? 5. If you want to display data arranged in a tree, use a QTreeWidget to do so. The amount of indentation used to indicate levels of hierarchy is controlled by the PySide. Jun 25, 2024 · 文章浏览阅读3. " – Oct 8, 2022 · 直接用qtreewidget，使用例子 qtreeview和qtreewidget[ansys简单示例]-Java架构师必看 ; 用模型/视图，用qt提供的标准QstandItemModel，可以看我这篇博客： 用模型/视图，子类化QAbstractItemModel方式; 先讲结论： 结论. when you have single data model and several views that shows it's contents in a different way or if you are viewing dbase contents(via QSql*Model which deals with dbase for you). 2: Address Book Feb 15, 2019 · 给一个超过100G大小的log file,log中存着IP地址 ，设计算法找到出现次数最多的IP地址？答：首先看到100G的日志文件，我们的第一反应肯定是太大了，根本加载不到内存，更别说设计算法了，那么怎么办呢？ Feb 16, 2016 · I want to know does QtreeView fetches data from model only for visible rows in the windows If we have QtableView or QTreeView if we have 1000 rows in model and if only 50 rows are visible at one tine does QTreeView/QtableView only fetches data for 50 rows only May 31, 2023 · 以上是获取QTreeView选中项的几种方法，我们可以根据具体情况选择最适合自己的方式。 ### 回答3： QTreeView是Qt中重要的控件之一，主要用于以树形结构展示数据。一般来说，我们在使用QTreeView时需要获取用户选择的Item。 Aug 23, 2018 · Hi All. Sep 23, 2019 · 一、如下图树形结构 二、实现代码 model 为私有变量，QStandardItemModel *model; GetItem为递归函数，这样可以遍历到所有的节点 Dec 23, 2019 · QTreeWidget - clicked vs itemSelectionChanged Bonjour, Je remets le nez dans un code que je n'ai pas touché depuis quelques mois et j'essaye d'améliorer l'ergonomie de l'interface. 그럼 이 둘의 차이점은 무엇이고, 언제 어떤 클래스를 사용해야 할까? QTreeWidget과 Aug 11, 2017 · To do this, use QTreeView::setSortingEnabled() and QTreeView::sortByColumn. 然后，需要设置数据模型，用于提供树形结构的数据。 3. 开发环境：win10、QT5. Dec 26, 2023 · QSS样式设置使用没有使用png图片而是使用SVG图片，因为SVG是矢量图不会在界面尺寸变化时发生失真。QTreeWidget节点样式设置有两种方式，一种是通过setStyle；一种是通过QSS样式。SetStyle方法。_qtreewidget 设置父节点与子节点有连线 Jun 16, 2019 · 文章浏览阅读7. Currently, I don't know make data model for this. scrollbar 滚动事件、collapse 事件的时候，遍历 visible_widgets 列表中 widget，将不再可见的进行 widget. QTreeWidget 类继承自 QTreeView 类，QTreeView 类也可以用来创建树形控件。 QTreeWidget 可以看作“简易版”或“升级版”的 QTreeView，前者的使用方式更加简单，入门门槛低，对于刚刚接触 Qt 的初学者，我建议先学习 QTreeWidget 控件。 Nov 30, 2013 · QTreeView or QTreeWidget level. Notice that using a QTreeWidget is not the only path to display information in trees. You just have to "force" it to show additional columns by inserting dummy QStandardItems into top-level table. 二、需求效果分析. QListView For displaying items in a list view. wkoq gzlfo ybtjxcu srrjza wnnqc qqcilt wgjdvg mokc yah zsssy