pyqt5的connect
时间: 2024-03-21 09:36:44 浏览: 113
在PyQt5中,`connect`是一个用于连接信号和槽的方法。信号是对象发出的事件,而槽是对这些事件做出响应的方法。通过使用`connect`方法,我们可以将一个信号与一个槽函数进行绑定,当信号被触发时,相应的槽函数将会被调用。
`connect`方法的语法如下:
```python
QObject.connect(sender, signal, receiver, slot, type=Qt.AutoConnection)
```
其中,`sender`是发送信号的对象,`signal`是要连接的信号,`receiver`是接收信号的对象,`slot`是要连接的槽函数。
以下是一个示例代码,展示了如何使用`connect`方法连接一个按钮点击事件和一个槽函数:
```python
from PyQt5.QtWidgets import QApplication, QMainWindow, QPushButton
def on_button_clicked():
print("Button clicked!")
app = QApplication([])
window = QMainWindow()
button = QPushButton("Click me!")
button.clicked.connect(on_button_clicked)
window.setCentralWidget(button)
window.show()
app.exec_()
```
在这个示例中,当按钮被点击时,`on_button_clicked`函数将会被调用,并输出"Button clicked!"。
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