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  • pyqt5 点开小窗口

    # -*- coding: utf-8 -*-
    
    import sys
    from PyQt5.QtWidgets import *
    from PyQt5.QtCore import *
    
    
    class FirstWindow(QWidget):
    
        close_signal = pyqtSignal()
        def __init__(self, parent=None):
            # super这个用法是调用父类的构造函数
            # parent=None表示默认没有父Widget,如果指定父亲Widget,则调用之
            super(FirstWindow, self).__init__(parent)
            self.resize(100, 100)
            self.btn = QToolButton(self)
            self.btn.setText("click")
    
        def closeEvent(self, event):
            self.close_signal.emit()
            self.close()
    
    
    class SecondWindow(QWidget):
        def __init__(self, parent=None):
            super(SecondWindow, self).__init__(parent)
            self.resize(200, 200)
            self.setStyleSheet("background: black")
    
        def handle_click(self):
            if not self.isVisible():
                self.show()
    
        def handle_close(self):
            self.close()
    
    
    if __name__ == "__main__":
        App = QApplication(sys.argv)
        ex = FirstWindow()
        s = SecondWindow()
        ex.btn.clicked.connect(s.handle_click)
        ex.btn.clicked.connect(ex.hide)
        ex.close_signal.connect(ex.close)
        ex.show()
        sys.exit(App.exec_())
    

      

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  • 原文地址:https://www.cnblogs.com/pythonClub/p/10260768.html
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