The PyQt5 Main Window dynamically loads the Widget instance code, pyqt5widget

The PyQt5 Main Window dynamically loads the Widget instance code, pyqt5widget

This article focuses on the sample code for dynamically loading widgets in the main PyQt5 window, as shown below.

We use Qt Designer to design two windows named MainForm and ChildrenForm ). We add a grid layout in the blank center of the Main Window and name it MaingridLayout. ChildrenForm needs to be put in.

Write code

From PyQt5 import QtWidgets from MainForm import Ui_MainForm from Children import Ui_Form from PyQt5.QtWidgets import QFileDialog class MainForm (QtWidgets. QMainWindow, Ui_MainForm): def _ init _ (self): super (MainForm, self ). _ init _ () self. setupUi (self) self. child = ChildrenForm () # self. child = children () generates the subwindow instance self. child self. fileOpen. triggered. connect (self. openMsg) # The Menu click event is triggered self. fileClose. triggered. connect (self. close) self. actionTst. triggered. connect (self. childShow) # click actionTst. The child window is displayed in the MaingridLayout of the main window. def childShow (self): self. maingridLayout. addWidget (self. child) # Add subwindow self. child. show () def openMsg (self): file, OK = QFileDialog. getOpenFileName (self, "open", "C:/", "All Files (*); Text Files (*. txt) ") self. statusbar. showMessage (file) # display the file address class ChildrenForm (QtWidgets. QWidget, Ui_Form): def _ init _ (self): super (ChildrenForm, self ). _ init _ () self. setupUi (self) if _ name __= = "_ main _": import sys app = QtWidgets. QApplication (sys. argv) myshow = MainForm () myshow. show () sys.exit(app.exe c _())

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