andr124's questions

highlight1()- 第二次就不行了，我该如何解决？

import sys
from time import sleep
from PySide6.QtWidgets import QMainWindow, QApplication
from PySide6.QtGui import QPainter, QColor, QPen
from PySide6.QtCore import Qt, QTimer


class Highlight(QMainWindow):
    def __new__(cls, *args, **kwargs):
        return super().__new__(cls)

    def __init__(self, x=0, y=0, w=500, h=500, color=Qt.red, thickness=2):
        super(Highlight, self).__init__()
        self.x = x
        self.y = y
        self.w = w
        self.h = h
        self.reg = self.x, self.y, self.w, self.h
        self.setAttribute(Qt.WA_NoSystemBackground, True)
        self.setAttribute(Qt.WA_TranslucentBackground, True)
        self.setStyleSheet("background:transparent;")
        self.setWindowFlags(Qt.FramelessWindowHint)
        self.outside_color = color
        self.thickness = thickness

    def paintEvent(self, event):
        painter = QPainter()
        painter.begin(self)
        painter.setPen(QPen(self.outside_color, self.thickness, Qt.SolidLine))
        trans = QColor(225, 100, 233)
        trans.setAlphaF(0.1)
        painter.setBrush(trans)
        painter.drawRect(*self.reg)
        painter.end()


def highlight1(reg, dur=2000, color=Qt.red):
    app1 = QApplication(sys.argv)
    window = Highlight(*reg, color=color)
    window.showFullScreen()
    QTimer.singleShot(dur, window.close)
    sys.exit(app1.exec())


if __name__ == '__main__':
    highlight1((10, 100, 600, 500), 3000, Qt.green)
    sleep(1)
    highlight1((50, 200, 500, 400), 3000, Qt.black)
    sleep(5)

单击按钮，btn_1会打开一个带有正方形的透明窗口，
如何在几秒钟后自动关闭它？

import sys
from PySide6 import QtCore, QtGui, QtWidgets


class MainWindow(QtWidgets.QMainWindow):
    def __init__(self):
        super().__init__()

        self.hl = Highlight(self)
        self.btn_1 = QtWidgets.QPushButton('btn_1', self)
        self.btn_1.clicked.connect(self.highlight)

    def highlight(self):
        self.hl.showFullScreen()


class Highlight(QtWidgets.QMainWindow):
    def __init__(self, parent):
        super(Highlight, self).__init__()
        self.parent = parent
        self.setAttribute(QtCore.Qt.WA_NoSystemBackground, True)
        self.setAttribute(QtCore.Qt.WA_TranslucentBackground, True)
        self.setStyleSheet("background:transparent;")
        self.setWindowFlags(QtCore.Qt.FramelessWindowHint)

    def paintEvent(self, event):
        painter = QtGui.QPainter()
        painter.begin(self)
        painter.setPen(QtGui.QPen(QtCore.Qt.red, 2, QtCore.Qt.SolidLine))
        painter.drawRect(500, 500, 100, 100)
        painter.end()


if __name__ == '__main__':
    app = QtWidgets.QApplication(sys.argv)
    window = MainWindow()
    window.show()
    sys.exit(app.exec())