PyQt加载UI文件

1.动态加载

import sys from PySide6 import QtCore,QtWidgets from PySide6.QtWidgets import * from PySide6.QtUiTools import QUiLoader class readfile(QWidget): def __init__(self): super().__init__() self.ui=QUiLoader().load("test.ui",self) self.__create_connections() def __create_connections(self): self.ui.pushButton.clicked.connect(self.open_file) def open_file(self): fname,_ = QFileDialog.getOpenFileName(self,"打开文件", '.') if fname: self.ui.lineEdit.setText(fname) with open(fname,'r') as f: content = f.read() self.ui.textBrowser.setText(str(content)) if __name__ == '__main__': #QApplication.setAttribute(Qt.AA_EnableHighDpiScaling) #QApplication.setAttribute(Qt.AA_ShareOpenGLContexts) app = QApplication(sys.argv) w = readfile() w.show() sys.exit(app.exec())

2.使用QFile加载

import sys from PySide6 import QtCore,QtWidgets from PySide6.QtWidgets import * from PySide6.QtCore import QFile from PySide6.QtUiTools import QUiLoader class readfile(QWidget): def __init__(self): super().__init__() qfile=QFile("test.ui") qfile.open(QFile.ReadOnly) qfile.close() self.ui=QUiLoader().load(qfile,self) self.__create_connections() def __create_connections(self): self.ui.pushButton.clicked.connect(self.open_file) def open_file(self): fname,_ = QFileDialog.getOpenFileName(self,"打开文件", '.') if fname: self.ui.lineEdit.setText(fname) with open(fname,'r') as f: content = f.read() self.ui.textBrowser.setText(str(content)) if __name__ == '__main__': #QApplication.setAttribute(Qt.AA_EnableHighDpiScaling) #QApplication.setAttribute(Qt.AA_ShareOpenGLContexts) app = QApplication(sys.argv) w = readfile() w.show() sys.exit(app.exec())

动态加载出有错误信息，但不影响运行 错误信息如下：

qt.pysideplugin: Environment variable PYSIDE_DESIGNER_PLUGINS is not set, bailing out. qt.pysideplugin: No instance of QPyDesignerCustomWidgetCollection was found. Qt WebEngine seems to be initialized from a plugin. Please set Qt::AA_ShareOpenGLContexts using QCoreApplication::setAttribute and QSGRendererInterface::OpenGLRhi using QQuickWindow::setGraphicsApi before constructing QGuiApplication.