025-QObject-类型判定-API

r囧r小猫 2023-07-07 11:03 33阅读 0赞

资源：[Python-GUI-PyQ5总概述.xmind][Python-GUI-PyQ5_.xmind]；[QObject.xmind][]

--------------------

**一、isWidgetType()**

（1）判断是否是控件类型

from PyQt5.Qt import  *
    class Window(QWidget):
        def __init__(self):
            super().__init__()
            self.setWindowTitle("QObject的学习")  # 窗口标题
            self.resize(500, 500)  # 设置窗口大小
            self.QObject类型判定()
    
        def QObject类型判定(self):
            obj=QObject()
            w=QWidget()
            btn=QPushButton()
            label=QLabel()
    
            objs=[obj,w,btn,label]
            for o in objs:
                print(o.isWidgetType())
    
    if __name__ == '__main__':
        import sys
        app = QApplication(sys.argv)
        window = Window()
        window.show()
        sys.exit(app.exec_())
    
    #返回
    '''
    False
    True
    True
    True
    '''

--------------------

（2）判断是否继承自QWidget类的

from PyQt5.Qt import  *
    class Window(QWidget):
        def __init__(self):
            super().__init__()
            self.setWindowTitle("QObject的学习")  # 窗口标题
            self.resize(500, 500)  # 设置窗口大小
            self.QObject类型判定()
    
        def QObject类型判定(self):
            obj=QObject()
            w=QWidget()
            btn=QPushButton()
            label=QLabel()
    
            objs=[obj,w,btn,label]
            for o in objs:
                print(o.inherits("QWidget"))
    
    if __name__ == '__main__':
        import sys
        app = QApplication(sys.argv)
        window = Window()
        window.show()
        sys.exit(app.exec_())
    
    #返回
    '''
    False
    True
    True
    True
    '''

--------------------

**二、inherits(父类)：一个对象是否继承（直接或者间接）自某个类**

from PyQt5.Qt import  *
    class Window(QWidget):
        def __init__(self):
            super().__init__()
            self.setWindowTitle("QObject的学习")  # 窗口标题
            self.resize(500, 500)  # 设置窗口大小
            self.QObject类型判定()
    
        def QObject类型判定(self):
            obj=QObject()
            w=QWidget()
            btn=QPushButton()
            label=QLabel()
    
            objs=[obj,w,btn,label]
            for o in objs:
                print(o.inherits("QPushButton"))
    
    if __name__ == '__main__':
        import sys
        app = QApplication(sys.argv)
        window = Window()
        window.show()
        sys.exit(app.exec_())
    
    #返回
    '''
    False
    False
    True
    False
    '''

[Python-GUI-PyQ5_.xmind]: https://download.csdn.net/download/qq_40078031/12138844
[QObject.xmind]: https://download.csdn.net/download/qq_40078031/12151862