python 如何检查PyQt6中的鼠标按钮事件？

fhity93d 于 2023-01-29 发布在 Python

关注(0)|答案(2)|浏览(326)

在PyQt5中，我们可以使用QEvent类来验证事件的发生，例如QEvent.MouseButtonPress。在PyQt6中，该语句不再有效。我已经检查了PyQt6.QtCore.QEvent和PyQt6.QtGui.QMouseEvent类的成员，我似乎无法找到包含MouseButtonPress事件值的正确Enum类。

PyQt5示例我正尝试转换为PyQt6

import sys
from PyQt5.QtWidgets import QApplication, QWidget
from PyQt5.QtCore import QEvent, Qt

class AppDemo(QWidget):
    def __init__(self):
        super().__init__()
        self.resize(800, 400)
        self.installEventFilter(self)
        
    def eventFilter(self, QObject, event):
        if event.type() == QEvent.MouseButtonPress: # <-- No longer work in PyQt6
            if event.button() == Qt.RightButton: # <-- Becomes event.button() == Qt.MouseButtons.RightButton
                print('Right button clicked')           

        return True

if __name__ == '__main__':
    app = QApplication(sys.argv)

    demo = AppDemo()
    demo.show()

    try:
        sys.exit(app.exec_())
    except SystemExit:
        print('Closing Window...')

更新：如果我打印QEvent和QMouseEvent的成员，这是所有可用的成员。

print('Members of PyQt6.QtCore.QEvent')
print(dir(QEvent))
print('-'*50)
print('Members of PyQt6.QtCore.QMouseEvent')
print(dir(QMouseEvent))

>>>
Members of PyQt6.QtCore.QEvent
['Type', '__class__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__le__', '__lt__', '__module__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__', 'accept', 'clone', 'ignore', 'isAccepted', 'isInputEvent', 'isPointerEvent', 'isSinglePointEvent', 'registerEventType', 'setAccepted', 'spontaneous', 'type']
--------------------------------------------------
Members of PyQt6.QtCore.QMouseEvent
['Type', '__class__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__le__', '__lt__', '__module__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__', 'accept', 'allPointsAccepted', 'button', 'buttons', 'clone', 'device', 'deviceType', 'exclusivePointGrabber', 'globalPosition', 'ignore', 'isAccepted', 'isBeginEvent', 'isEndEvent', 'isInputEvent', 'isPointerEvent', 'isSinglePointEvent', 'isUpdateEvent', 'modifiers', 'point', 'pointById', 'pointCount', 'pointerType', 'pointingDevice', 'points', 'position', 'registerEventType', 'scenePosition', 'setAccepted', 'setExclusivePointGrabber', 'spontaneous', 'timestamp', 'type']

python

来源：https://stackoverflow.com/questions/66235661/how-to-check-mousebuttonpress-event-in-pyqt6

2条答案

按热度按时间

sqougxex1#

PyQt6枚举的一个主要变化是使用python枚举，因此必须使用枚举名作为中介，在您的情况下，MouseButtonPress属于Type枚举，RightButton属于MouseButtons，因此必须将其更改为：

def eventFilter(self, QObject, event):
    if event.type() == QEvent.Type.MouseButtonPress:
        if event.button() == Qt.MouseButtons.RightButton:
            print("Right button clicked")

    return True

赞(0）回复(0）举报 2023-01-29

balp4ylt2#

import sys

from PyQt6.QtCore import Qt
from PyQt6.QtWidgets import QApplication, QWidget

class Widget(QWidget):

    def __init__(self):
        super().__init__()

    def mousePressEvent(self, event):
        if event.button() == Qt.MouseButton.LeftButton:
            print("left")
            print(event.pos().x(), event.pos().y())
        elif event.button() == Qt.MouseButton.RightButton:
            print("right")

if __name__ == "__main__":
    app = QApplication(sys.argv)
    w = Widget()
    w.show()
    sys.exit(app.exec())

赞(0）回复(0）举报 2023-01-29

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python 如何检查PyQt6中的鼠标按钮事件？

2条答案

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