python - 在 QPushButton PyQt5 周围绘制 QFrame

Question

我无法让 QFrame 像边框一样完全包围 QPushButton。它仅框住按钮的顶部和左侧。我想知道我在框架上做错了什么。

import sys

from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *

class main(QWidget):
    def __init__(self):
        super().__init__()
        layout1 = QVBoxLayout()
        btn1 = QPushButton("Test")

        frame = QFrame(btn1)
        frame.setGeometry(btn1.geometry())
        frame.setFrameShape(QFrame.Box)
        frame.setFrameShadow(QFrame.Plain)
        frame.setLineWidth(4)

        layout1.addWidget(btn1)
        self.setLayout(layout1)

if __name__ == '__main__':
    app = QApplication(sys.argv)
    window = main()
    window.show()
    sys.exit(app.exec_())

Answer 1

问题是因为 QFrame 不会改变大小，而是 QPushButton 会。在我的解决方案中，每次在 QPushButton 中更改大小时，我都会调整大小

class FrameButton(QPushButton):
    def __init__(self, *args, **kwargs):
        QPushButton.__init__(self, *args, **kwargs)
        self.frame = QFrame(self)
        self.frame.setFrameShape(QFrame.Box)
        self.frame.setFrameShadow(QFrame.Plain)
        self.frame.setLineWidth(4)

    def resizeEvent(self, event):
        self.frame.resize(self.size())
        QWidget.resizeEvent(self, event)


class main(QWidget):
    def __init__(self):
        super().__init__()
        layout = QVBoxLayout(self)
        layout.addWidget(FrameButton("Test"))