PyQt5:带QAction的键盘快捷键 [英] PyQt5: Keyboard shortcuts w/ QAction

问题描述

如何在PyQt5中实现键盘快捷键(以运行功能)?我看到我应该以一种或另一种方式使用QAction，但是我不能将两者和两者放在一起，并且所有示例似乎都不适用于PyQt5，而是适用于PyQt4.

How do I implement keyboard shortcuts (to run a function) in PyQt5? I see I'm supposed QAction in one way or another, but I can't put the two and two together, and all examples don't seem to work with PyQt5 but instead PyQt4.

推荐答案

使用QShortcut和QKeySequence类，如下所示:

import sys
from PyQt5.QtCore import pyqtSlot
from PyQt5.QtGui import QKeySequence
from PyQt5.QtWidgets import QWidget, QShortcut, QLabel, QApplication, QHBoxLayout

class Window(QWidget):
    def __init__(self, *args, **kwargs):
        QWidget.__init__(self, *args, **kwargs)

        self.label = QLabel("Try Ctrl+O", self)
        self.shortcut = QShortcut(QKeySequence("Ctrl+O"), self)
        self.shortcut.activated.connect(self.on_open)

        self.layout = QHBoxLayout()
        self.layout.addWidget(self.label)

        self.setLayout(self.layout)
        self.resize(150, 100)
        self.show()

    @pyqtSlot()
    def on_open(self):
        print("Opening!")

app = QApplication(sys.argv)
win = Window()
sys.exit(app.exec_())

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