相关疑难解决方法(0)

我想创建一个半透明背景的全屏窗口,但是完全可见的子窗口小部件(覆盖效果的种类).

这是我到目前为止所拥有的:

import sys

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

app = QApplication(sys.argv)

# Create the main window
window = QMainWindow()

window.setWindowOpacity(0.3)
window.setAttribute(Qt.WA_NoSystemBackground, True)
window.setWindowFlags(Qt.FramelessWindowHint)

# Create the button
pushButton = QPushButton(window)
pushButton.setGeometry(QRect(240, 190, 90, 31))
pushButton.setText("Finished")
pushButton.clicked.connect(app.quit)

# Center the button
qr = pushButton.frameGeometry()
cp = QDesktopWidget().availableGeometry().center()
qr.moveCenter(cp)
pushButton.move(qr.topLeft())

# Run the application
window.showFullScreen()
sys.exit(app.exec_())

这会产生半透明效果,但即使按钮也是半透明的.

我也试过替换了

window.setWindowOpacity(0.3)

通过这个电话

window.setAttribute(Qt.WA_TranslucentBackground, True)

但无济于事,在这种情况下,背景是完全透明的(按钮正确完全可见).

解决方案:(感谢Aaron的建议):

诀窍在于为主窗口实现自定义paintEvent.

import sys

from PyQt5.QtCore import * …