Execute Key Sequence on Button Click

Question

I'm trying to create an Undo and Redo Button inside a GUI App using PyQt5 and Python 3.7.

When the Undo and Redo Buttons are clicked, the Key Sequences "Ctrl+Z" and "Ctrl+Y" should be executed respectively. Ive superficially gone through the documentation of QShortCut and QKeySequence but they seem to be designed for detecting key sequences and not triggering them. So how do I implement these buttons?

As per eyllanesc's comment, I'm adding this to better explain what I am trying to achieve.

self.undoButton = self.findChild(QtWidgets.QPushButton, 'undoButton')
self.undoButton.clicked.connect(self.undoButtonPressed)
self.anyPlainTextEdit = self.findChild(QtWidgets.QPlainTextEdit, 'anyPlainTextEdit')

# Function to Execute Key Sequence
def undoButtonPressed(self):
    # Execute Ctrl+Z Key Sequence

I'm wondering if this is even possible. If not, should I maintain Previous and current values of the PlainTextArea in separate variables and set the value of the PlainTextArea accordingly?

eyllanesc · Accepted Answer · 2020-10-25 21:05:09Z

1

You don't have to launch the shortcut to enable redo or undo, just call the slot redo() and undo() when the buttons are pressed:

self.undoButton.clicked.connect(self.anyPlainTextEdit.undo)
self.redoButton.clicked.connect(self.anyPlainTextEdit.redo)

answered Oct 25, 2020 at 21:05

eyllanesc

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1 Comment

atf Over a year ago

Thanks a lot. I found this after you provided the solution: link

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