透明框架pyqt5内的透明小部件 [英] transparent widgets inside transparent frame pyqt5

问题描述

我在为我的程序解决问题时遇到问题.当我创建一个包含其他一些小部件的透明小部件时，它们也变得透明，我不明白为什么.

I have a problem solving an issue for my program. When I create a transparent Widget that holds some other widgets, they become transparent too and I don't understand why.

from PyQt5 import QtWidgets
from PyQt5.QtCore import Qt

class MainFrame(QtWidgets.QWidget):

    def __init__(self, parent=None):
        super(MainFrame, self).__init__(parent)

        self.setWindowFlags(Qt.FramelessWindowHint)
        self.setFixedSize(860, 560)

        # Set the opacity
        self.setWindowOpacity(1 - 50 / 100)

        layout = QtWidgets.QHBoxLayout(self)

        layout.addWidget(QtWidgets.QPushButton("TEST"))

在此示例代码中，小部件 QPushButton 将显示为透明，标签和其他小部件也是如此.如何仅将透明度应用于我的类 MainFrame.

In this sample code, the widget QPushButton will appear transparent, it's the same with labels, and other widgets. How do I apply transparency ONLY to my class MainFrame.

这是我所拥有的(透明按钮和透明 QWidget):这是我需要的(没有透明按钮和透明 QWidget):非常感谢.

here is what I have (transparent button and transparent QWidget) : here is what I need (NO transparent button and transparent QWidget) : Thank you very much.

推荐答案

我相信您正在寻找这个:

I believe you are looking for this:

self.setAttribute(Qt.WA_TranslucentBackground)

根据您的示例改编的完整代码如下:

The full code adapted from your example is this:

import sys
from PyQt5 import QtWidgets
from PyQt5.QtCore import Qt

class MainFrame(QtWidgets.QWidget):

    def __init__(self, parent=None):
        super(MainFrame, self).__init__(parent)

        self.setWindowFlags(Qt.FramelessWindowHint)
        self.setFixedSize(860, 560)

        # Set the opacity
        #self.setWindowOpacity(1 - 50 / 100)

        layout = QtWidgets.QHBoxLayout(self)

        layout.addWidget(QtWidgets.QPushButton("TEST"))

        self.setAttribute(Qt.WA_TranslucentBackground)

if __name__ == '__main__':
    app = QtWidgets.QApplication(sys.argv)
    Frame = MainFrame(None)
    Frame.show()
    app.exec_()

，结果是这样的:

如果你只想有一些透明度，你可能需要像 这个例子.

If you want to have only some transparency you might need to rewrite the paintEvent like in this example.

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