In this lesson, we are going to learn how to create and assign multiple keyboard shortcuts to your PyQt5 application in Python.
The QShortcut class provides a way of connecting keyboard shortcuts to Qt’s signals and slots mechanism, so that objects can be informed when a shortcut is executed. The shortcut can be set up to contain all the key presses necessary to describe a keyboard shortcut, including the modifier keys such as Shift, Ctrl, and Alt.
And the The QKeySequence class encapsulates a key sequence as used by shortcuts.
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Source Code:
import sys
from PyQt5.QtGui import QKeySequence
from PyQt5.QtWidgets import QApplication, QWidget, QShortcut, QLabel, QHBoxLayout
class AppDemo(QWidget):
def __init__(self):
super().__init__()
self.label = QLabel('Press Ctrl + O', self)
self.shortcut_open = QShortcut(QKeySequence('Ctrl+O'), self)
self.shortcut_open.activated.connect(self.on_open)
self.shortcut_close = QShortcut(QKeySequence('Ctrl+Q'), self)
self.shortcut_close.activated.connect(self.closeApp) # or lambda : app.quit()
self.layout = QHBoxLayout()
self.layout.addWidget(self.label)
self.setLayout(self.layout)
self.resize(150, 150)
def on_open(self):
print('Ctrl O has been fired')
def closeApp(self):
app.quit()
app = QApplication(sys.argv)
demo = AppDemo()
demo.show()
sys.exit(app.exec_())
