PyQt5:Gtk-CRITICAL**:IA__gtk_widget_style_get:断言'GTK_IS_WIDGET(widget)'失败

Question

我用PyQt5得到这个错误,我想我只有在使用QTextEdit时才会出现此错误.我尝试在QTextEdit的位置使用QLineEdit,它没有问题.当我打开程序时使用QTextEdit我得到了该错误,程序运行速度非常慢.错误:(python:4843): Gtk-CRITICAL **: IA__gtk_widget_style_get: assertion 'GTK_IS_WIDGET (widget)' failed

import sys
from PyQt5.QtWidgets import (QWidget, QLabel, QLineEdit, 
    QTextEdit, QGridLayout, QApplication)


class Example(QWidget):

    def __init__(self):
        super(Example, self).__init__()

        self.initUI()


    def initUI(self):

        title = QLabel('Title')
        author = QLabel('Author')
        review = QLabel('Review')

        titleEdit = QLineEdit()
        authorEdit = QLineEdit()
        reviewEdit = QTextEdit()

        grid = QGridLayout()
        grid.setSpacing(10)

        grid.addWidget(title, 1, 0)
        grid.addWidget(titleEdit, 1, 1)

        grid.addWidget(author, 2, 0)
        grid.addWidget(authorEdit, 2, 1)

        grid.addWidget(review, 3, 0)
        grid.addWidget(reviewEdit, 3, 1, 5, 1)

        self.setLayout(grid) 

        self.setGeometry(300, 300, 350, 300)
        self.setWindowTitle('Review')   
        self.show()


if __name__ == '__main__':

    app = QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())

Answer 1

我找到了解决这个问题的方法.更改应用程序的样式没有显示错误,一切正常.

更正代码:

if __name__ == '__main__':

    app = QApplication(sys.argv)
    app.setStyle("fusion") #Changing the style
    ex = Example()
    sys.exit(app.exec_())

有关样式的更多信息,请访问:http://doc.qt.io/qt-5/gallery.html