pyqt长按事件中用Python
时间: 2024-04-06 10:27:08 浏览: 97
在PyQt中,可以通过以下步骤来实现长按事件:
1. 首先,需要导入PyQt库:
```python
from PyQt5.QtWidgets import QApplication, QWidget
from PyQt5.QtCore import QTimer
```
2. 创建一个继承自QWidget的自定义窗口类,并重写mousePressEvent和mouseReleaseEvent方法:
```python
class MyWidget(QWidget):
def __init__(self):
super().__init__()
def mousePressEvent(self, event):
self.timer = QTimer()
self.timer.setSingleShot(True)
self.timer.timeout.connect(self.longPressEvent)
self.timer.start(1000) # 设置长按时间,单位为毫秒
def mouseReleaseEvent(self, event):
self.timer.stop()
def longPressEvent(self):
print("长按事件触发")
```
3. 创建QApplication实例,并在其中创建自定义窗口对象:
```python
app = QApplication([])
widget = MyWidget()
widget.show()
app.exec_()
```
这样,当你在窗口上按下鼠标并保持一段时间后,就会触发长按事件。
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