1. Attribute binding This is the simplest way to bind properties of C++ objects directly in QML. Define properties by using the Q_PROPERTY macro in a C++ object, and then associate the property with a QML element using binding syntax in QML. person.h #include <QObject> class Person : public QObject { Q_OBJECT /* Use Q_PROPERTY […]
Tag: qml
QML(26)–Multi-layer qml interface transmits signals
Directory scenes to be used traditional way Efficient way code Show results Usage scenarios The interface nesting relationship is as follows #mermaid-svg-Pt8AQGPjE5lV7nJh {font-family:”trebuchet ms”,verdana,arial,sans-serif;font-size:16px;fill:#333;}#mermaid-svg-Pt8AQGPjE5lV7nJh .error- icon{fill:#552222;}#mermaid-svg-Pt8AQGPjE5lV7nJh .error-text{fill:#552222;stroke:#552222;}#mermaid-svg-Pt8AQGPjE5lV7nJh .edge-thickness-normal{stroke-width:2px;} #mermaid-svg-Pt8AQGPjE5lV7nJh .edge-thickness-thick{stroke-width:3.5px;}#mermaid-svg-Pt8AQGPjE5lV7nJh .edge-pattern-solid{stroke-dasharray:0;}#mermaid-svg-Pt8AQGPjE5lV7nJh .edge- pattern-dashed{stroke-dasharray:3;}#mermaid-svg-Pt8AQGPjE5lV7nJh .edge-pattern-dotted{stroke-dasharray:2;}#mermaid-svg-Pt8AQGPjE5lV7nJh .marker{fill:#333333;stroke:#333333; }#mermaid-svg-Pt8AQGPjE5lV7nJh .marker.cross{stroke:#333333;}#mermaid-svg-Pt8AQGPjE5lV7nJh svg{font-family:”trebuchet ms”,verdana,arial,sans-serif;font-size:16px ;}#mermaid-svg-Pt8AQGPjE5lV7nJh .label{font-family:”trebuchet ms”,verdana,arial,sans-serif;color:#333;}#mermaid-svg-Pt8AQGPjE5lV7nJh .cluster-label text{fill: #333;}#mermaid-svg-Pt8AQGPjE5lV7nJh .cluster-label span{color:#333;}#mermaid-svg-Pt8AQGPjE5lV7nJh .label text,#mermaid-svg-Pt8AQGPjE5lV7nJh span{fill:#333;color:#333; }#mermaid-svg-Pt8AQGPjE5lV7nJh .node rect,#mermaid-svg-Pt8AQGPjE5lV7nJh .node circle,#mermaid-svg-Pt8AQGPjE5lV7nJh […]
026-Third generation software development-C++&QML interaction
Third generation software development-C++ & QML interaction Article directory 3rd Generation Software Development – C++ & QML Interaction Project Introduction C++ & QML interaction Property binding example Signals and Slots Calling C++ functions in QML Share data using context Create exportable C++ objects in conclusion Keywords: Qt、 Qml、 C++, Q_OBJECT、 QObject Project introduction Welcome to […]
QML customizable SpinBox with long press and short press
Default long press + 10. Short press + 1 The main difficulty is to distinguish between long press and short press, with 1s as the limit. Here I use four timers to implement the long and short press operations of addition and subtraction. The shortClickTimer timer is used to determine whether it is a short […]
Create interactive graphical interfaces in QML using the Graphics View Framework
Use Graphics View Framework to create interactive graphical interfaces in QML Create interactive graphical interfaces in QML using the Graphics View Framework Create interactive graphical interfaces in QML using the Graphics View Framework What is Graphics View Framework? Using the graphical view framework in QML Step 1: Project Configuration Step 2: Create QmlGraphicsView class Step […]
QML: Drag the curve coordinate points to modify the curve
Modify the value of the coordinate point of the polyline by moving the slider on the coordinate point. The specific effects are as follows: It can be roughly divided into two points: 1. Implement the movable slider and obtain the real-time x, y coordinates. 2. Convert the x and y coordinates of the slider to […]
The use of tree structure control TreeView in qml, and the use of its model that inherits QAbstractItemModel
The use of tree structure control TreeView in qml, and the use of its model that inherits QAbstractItemModel If you don’t want to see the process, just skip to the end where there is source code! Let’s look at the renderings first: I often don’t like to use tree structure diagrams because the model it […]
[QML file structure] Understand the relationship between multi-layer nested controls in QML
Directory title 1. Introduction 1.1 Basic structure and components of QML (Basic structure and components of QML) 1.2 Why we need to access controls across multiple layers (Why we need to access controls across multiple layers) 2. QML Nesting and Component Relationships (QML Nesting and Component Relationships) 2.1 Understanding parent-child relationships 2.2 How to define […]
[QML setting color] Color magic in QML: from color picker to user interface
Directory title 1. Introducing the color picker component 1.1 Why do we need a color picker? 1.2 How to introduce the ColorDialog component? 1.3 Basic properties of ColorDialog Sample code 2. Creating an Instance of ColorDialog 2.1 Importing the ColorDialog Component 2.2 Defining the ColorDialog 2.3 Opening the ColorDialog 2.4 Retrieving the User’s Color Selection […]
QML android collects mobile phone sensor data and sends it through udp
Use qt to develop Android app, collect mobile phone sensor data and send it through udp #ifndef UDPLINK_H #define UDPLINK_H #include <QObject> #include <QUdpSocket> #include <QHostAddress> class UdpLink : public QObject { Q_OBJECT public: explicit UdpLink(QObject *parent = nullptr); void setAddress(QString _ip,quint16 _port); void sendData(QByteArray ba); signals: private: QString ip; quint16 port; QUdpSocket socket; }; […]