Foreword As computer vision and multimedia applications continue to evolve, image and video capture is becoming increasingly important. In Python, there are a variety of libraries and tools to choose from for opening cameras, capturing images, and processing video streams. This article aims to provide readers with a comprehensive understanding of these capture methods and […]
Tag: pyqt5
[PyQt5 graphical interface programming (4)]: Interface development
Interface development need Development ideas development process QTreeWidget Create QTreeWidget (tree window) Create Item question 1. If the item text is too long, it will be incompletely displayed and ellipses will appear. develop 1. Get the row currently selected by the mouse and display the corresponding attributes. Quote PyQt5.QtWidgets.QFormLayout: Form layout QStackedWidget: stack form Vertical […]
python pyqt5 From window embedded sub-window
Show results Implement the function : 1. Click to open the form to display the sub-window embedded in the main window. 2. Import text content through the open control in the file control and display it in the sub-window 3. Close the child window through close in the file control Code: # -*- coding: utf-8 […]
python pyqt5 QTextEdit 2. Automatic completion of prompt words in text editing box, using QCompleter
1. Enter at least 2 characters to start the prompt, and press Enter to complete it automatically. 2. Not case sensitive 3. Use substitution to prevent completion case inconsistencies. renderings Code: 1. Rewrite QTextEdit and create TextEdit.py from PyQt5.QtCore import Qt, QStringListModel from PyQt5.QtGui import QTextCursor from PyQt5.QtWidgets import QTextEdit, QCompleter class TextEdit(QTextEdit): def __init__(self, […]
A preliminary exploration of PyQt5+Qt designer
In the previous article, we set up the development environment of PyQt5. When the iron is hot, we will give it a try based on the built environment. 1: Introduction to PyQt5 package module The main modules included in PyQt5 are as follows. QtCore module – covers the core non-GUI functions of the package. This […]
PyQt5-QObject(02)-parent class object operation
Parent class object operations API setParent(parent) Sets the parent object. parent() Gets the parent object. children() Gets all direct child objects. findChild(parameter 1, parameter 2, parameter 3) Get a child object with a specified name and type. Parameter 1: type. Parameter 2: name. Parameter 3: Qt.FindChildrenRecursively searches recursively (default), Qt.FindDirectChildrenOnly only finds direct child objects. […]
PyQt5 custom switch button (2)
Effect display Code display from PyQt5.QtCore import Qt, pyqtSignal, QTimer, QRectF, QRect from PyQt5.QtGui import QFont, QColor, QPainter, QPainterPath from PyQt5.QtWidgets import QWidget class SwitchBtn(QWidget): clicked = pyqtSignal(bool) # Component constants BORDER_WIDTH = 4 COLOR_BORDER = (209, 207, 198) COLOR_SLIDER = (255, 255, 255) COLOR_TEXT = (255, 255, 255) COLOR_CLOSE = (112, 112, 112) COLOR_OPEN […]
pyQt5 example of python: Application of Matplotlib
1. Display logic 1.1MatplotlibWidget.py import sys import random import matplotlib matplotlib.use(“Qt5Agg”) from PyQt5 import QtCore from PyQt5.QtWidgets import QApplication, QMainWindow, QVBoxLayout, QSizePolicy, QWidget from numpy import range, sin, pi from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas from matplotlib.backends.backend_qt5agg import NavigationToolbar2QT as NavigationToolbar from matplotlib.figure import Figure import matplotlib.pyplot as plt class MyMplCanvas(FigureCanvas): “””The final parent class […]
Python graphical interface framework PyQt5 usage guide!
Common GUI frameworks PyQt5: Qt is a cross-platform C++ graphical user interface library. QT was once owned by Nokia and later sold to Digia Oyj, a Finnish software company. PyQt5 is a Python interface based on Digia’s Qt5 and consists of a set of Python modules. PyQt5 itself has more than 620 classes and 6000 […]
A glimpse into the future: PyQt5 leads the next generation of Python GUI development
PyQt5 is a powerful toolkit for creating graphical user interfaces (GUIs). It is based on the Qt library and provides rich GUI development capabilities for Python. Whether you are a beginner or an experienced developer, you can use this article to gain an in-depth understanding of how to use PyQt5 to build a variety of […]