如何使标签中的文本在一定长度后进入下一行

Question

我在PyQt5 / Python 3中为学校的一个项目工作了一个小GUI，但是我的文本被切断了。使用label.adjustSize（）不能修复它，我想不出任何其他方法可以解决它。我希望通过创建新标签或使用相同标签来使标签进入新行，这将是更好的选择。我将截止的字符数为62，所以我只想在标签的文本超过62个字符时创建新行。

这里的问题截图

标签代码的屏幕截图

Answer 1

您必须使用布局，以便除了将QLabel的wordWrap属性设置为True之外，QLabel还会自动调整QLabel的宽度：

from PyQt5 import QtCore, QtWidgets

class Widget(QtWidgets.QWidget):
    def __init__(self, parent=None):
        super(Widget, self).__init__(parent)
        self.label_content = QtWidgets.QLabel(
            wordWrap=True,
            alignment=QtCore.Qt.AlignLeft|QtCore.Qt.AlignTop
        )
        self.button_view = QtWidgets.QPushButton("View Database")
        self.input_label = QtWidgets.QLabel("Input:") 
        self.lineedit = QtWidgets.QLineEdit()
        self.ask_button = QtWidgets.QPushButton("Ask Question")

        grid_layout = QtWidgets.QGridLayout(self)
        grid_layout.addWidget(self.label_content)
        grid_layout.addWidget(self.button_view, 0, 1, alignment=QtCore.Qt.AlignTop)
        grid_layout.addWidget(self.input_label, 1, 0, 1, 2)
        grid_layout.addWidget(self.lineedit, 2, 0)
        grid_layout.addWidget(self.ask_button, 2, 1)
        grid_layout.setRowStretch(0, 1)

        self.label_content.setText("Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla sollicitudin aliquet mauris quis fringilla. Vivamus scelerisque mauris turpis, a imperdiet purus varius eget. Suspendisse pretium est id augue accumsan, vel luctus purus luctus. In hendrerit, turpis ac ultricies volutpat, urna enim hendrerit nisl, a sagittis arcu justo sit amet elit. Aenean bibendum, lacus nec commodo consequat, tortor lectus pulvinar velit, eu ultrices sem felis eget velit. Curabitur id ipsum sit amet tellus euismod mollis. Vivamus et imperdiet ligula. Donec malesuada fermentum felis, at egestas justo ultrices ac. In quis risus ut odio mattis commodo vel sit amet mauris. Vestibulum rutrum ligula tellus, quis faucibus urna imperdiet at. Praesent fermentum condimentum leo. Phasellus quis lacus sapien. Duis viverra sodales aliquet. Sed volutpat non nibh tincidunt blandit. Sed elementum sem at ligula pharetra hendrerit. Donec vel scelerisque mauris. ")

if __name__ == '__main__':
    import sys
    app = QtWidgets.QApplication.instance()
    if app is None:
        app = QtWidgets.QApplication(sys.argv)
    w = Widget()
    w.resize(640, 480)
    w.show()
    sys.exit(app.exec_())