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Python3.x Python PyQt Common Widgets

PyQt is a GUI programming toolkit for the Python language. It is a Python binding for the Qt application framework.

Qt is a cross-platform C++ graphical user interface application development framework, widely used for developing GUI programs.

PyQt provides rich components (Widgets) to build user interfaces. These components are the foundational building blocks for GUI applications.

Basic Window Components

QMainWindow

QMainWindow is the main window class, providing a standard application framework:

Example

from PyQt5.QtWidgets import QMainWindow, QApplication\n\napp = QApplication([])\nwindow = QMainWindow()\nwindow.setWindowTitle('Main Window Example')\nwindow.setGeometry(100,100,800,600)# x, y, width, height\nwindow.show()\napp.exec_()

QWidget

QWidget is the base class for all user interface objects:

Example

from PyQt5.QtWidgets import QWidget\n\nwidget = QWidget()\nwidget.setWindowTitle('Basic Window')\nwidget.show()

Common Input Components

QLabel

Displays text or images:

Example

from PyQt5.QtWidgets import QLabel\n\nlabel = QLabel('This is a label')\nlabel.setStyleSheet('font-size: 16px; color: blue;')

QLineEdit

Single-line text input box:

Example

from PyQt5.QtWidgets import QLineEdit\n\nline_edit = QLineEdit()\nline_edit.setPlaceholderText('Please enter content...')

QTextEdit

Multi-line text editor:

Example

from PyQt5.QtWidgets import QTextEdit\n\ntext_edit = QTextEdit()\ntext_edit.setPlainText('Multi-line Text Editor')

QComboBox

Drop-down selection box:

Example

from PyQt5.QtWidgets import QComboBox\n\ncombo = QComboBox()\ncombo.addItems(['Option 1','Option 2','Option 3'])

Button Components

QPushButton

Standard button:

Example

from PyQt5.QtWidgets import QPushButton\n\nbutton = QPushButton('Click Me')\nbutton.setStyleSheet('background-color: green; color: white;')

QRadioButton

Radio button:

Example

from PyQt5.QtWidgets import QRadioButton\n\nradio1 = QRadioButton('Option 1')\nradio2 = QRadioButton('Option 2')

QCheckBox

Checkbox:

Example

from PyQt5.QtWidgets import QCheckBox\n\ncheck1 = QCheckBox('Choice 1')\ncheck2 = QCheckBox('Choice 2')

Layout Components

QHBoxLayout

Horizontal layout:

Example

from PyQt5.QtWidgets import QHBoxLayout, QPushButton\n\nh_layout = QHBoxLayout()\nh_layout.addWidget(QPushButton('Left'))\nh_layout.addWidget(QPushButton('Center'))\nh_layout.addWidget(QPushButton('Right'))

QVBoxLayout

Vertical layout:

Example

from PyQt5.QtWidgets import QVBoxLayout, QPushButton\n\nv_layout = QVBoxLayout()\nv_layout.addWidget(QPushButton('Top'))\nv_layout.addWidget(QPushButton('Middle'))\nv_layout.addWidget(QPushButton('Bottom'))

from PyQt5.QtSpeed Racing Official Account s import QGridLayout, QPushButton\n\ngrid = QGridLayout()\ngrid.addWidget(QPushButton('(0,0)'),0,0)\ngrid.addWidget(QPushButton('(0,1)'),0,1)\ngrid.addWidget(QPushButton('(1,0)'),1,0)

from PyQt5.QtWidgets import QTableWidget, QTableWidgetItem\n\ntable = QTableWidget(3,3)# 3 rows, 3 columns\ntable.setHorizontalHeaderLabels(['Column 1','Column 2','Column 3'])\ntable.setItem(0,0, QTableWidgetItem('Data 1'))

from PyQt5.QtWidgets import QTreeWidget, QTreeWidgetItem\n\ntree = QTreeWidget()\ntree.setHeaderLabels(['Name','Value'])\nroot = QTreeWidgetItem(tree,['Root Node'])\nchild = QTreeWidgetItem(root,['Child Node','123'])

from PyQt5.QtWidgets import QTabWidget, QWidget\n\ntab = QTabWidget()\ntab.addTab(QWidget(),'Tab 1')\ntab.addTab(QWidget(),'Tab 2')

from PyQt5.QtWidgets import QMessageBox\n\nmsg = QMessageBox()\nmsg.setWindowTitle('Prompt')\nmsg.setText('This is a message dialog')\nmsg.setIcon(QMessageBox.Information)\nmsg.exec_()

from PyQt5.QtWidgets import QFileDialog\n\nfile_name = QFileDialog.getOpenFileName(None,'Select File','','Text Files (*.txt);;All Files (*)')

button = QPushButton('Styled Button')\nbutton.setStyleSheet('''\nQPushButton {\n    background-color: #4CAF50;\n    border: none;\n    color: white;\n    padding: 10px 24px;\n    text-align: center;\n    font-size: 16px;\n    margin: 4px 2px;\n    border-radius: 8px;\n}\nQPushButton:hover {\n    background-color: #45a049;\n}\n''')