Python Qt: How to catch “return” in qtablewidget

问题

I would like to catch the return key in a qtablewidget to do something with the currently marked cell. That is: I want the user to press the "return/enter" key on his keyboard when any cell is highligted. Pressing that button should issue a new method. For example show a messagebox with the content of that cell.

How do I connect the event of pressing the return key to a method?

Since I am new to python I have no idea how to do that and would be grateful for any advice.

回答1:

Your question is a little ambiguous. What does 'catch the return key' mean? QTableWidget has several methods that return information.

If you wanted to get the current cell's text you could simply do:

my_table.currentItem().text()

UPDATE

In your comment below, you specified that you want the user to be able to press Enter or Return and then be able to process the current items information.

To do this you create a subclass of QTableWidget and override its keyPressEvent method. Some of the inspiration came from here:

class MyTableWidget(QTableWidget):
    def __init__(self, parent=None):
        super(MyTableWidget, self).__init__(parent)

    def keyPressEvent(self, event):
         key = event.key()

         if key == Qt.Key_Return or key == Qt.Key_Enter:
             # Process current item here
         else:
             super(MyTableWidget, self).keyPressEvent(event)

来源：https://stackoverflow.com/questions/23961355/python-qt-how-to-catch-return-in-qtablewidget