在PyQt中创建动态按钮

Question

我尝试在PyQt类中添加一个函数,但它总是返回一个错误.

# Error: TypeError: connect() slot argument should be a callable or a signal, not 'NoneType' # 

def commander (self, arg):
    exec arg    

def aButton (self, layout, **kwargs):
    name = kwargs.pop("name","Button")
    command = kwargs.pop("command", "" )
    button = QtGui.QPushButton(name)
    button.clicked.connect(self.commander(command))
    layout.addWidget(button)
    return button

可能是这里有人可以帮我解决:')Thx!

Answer 1

你需要一个功能:

button.clicked.connect(lambda: self.commander(command))

请注意,lambda将避免对函数调用进行评估,因此self.commander(command)只有在单击时才会调用