problem to edit cell in qtablewidget

[Maurizio Berti]

It's not really clear what you meant by "can't edit" (begin editing of a
cell? by clicking or by pressing an edit trigger key? actually
typing/editing values in the editor?) but, in any case, the most important
problem is that you're not calling the default implementation, which is
used, among other things, to begin the editing of a cell while using the
keyboard.
In proper conditions, you should be able to do it with super(), but you
monkey patched the event handler in another class, and that won't work, so
the only solution would be to call
QTableWidget.keyPressEvent(self.tableWidget, event).

Monkey patching should be done only on rare occasions and with full
awareness, but should be generally avoided for event handlers or any
function that needs access to the super class if patching a different
object like in this case. A more appropriate approach is to either use an
event filter, or, even better, create a subclass (with a promoted widget).
When using scroll areas, the latter is normally preferable, as
QAbstractScrollArea subclasses internally "reroute" events of the viewport
to the default QWidget event handlers, but that won't be exactly the same
with an event filter (even if installed for the viewport).
Just subclass QTableWidget and promote it in Designer.

Note that the second if should actually be an elif (followed by a final
else that calls the default implementation), and if copied_cell is not
declared beforehand (eg. in the init) *and* its contents validated (before
trying to get any item), that will raise an exception.

Regards,
MaurizioB

Il giorno mar 10 set 2024 alle ore 12:30 Luca Bertolotti <
luca72.bertolotti at gmail.com> ha scritto:

> Hello
> i have add this in my app
> class Form(QWidget, Ui_Form):
>     """
>     Class documentation goes here.
>     """
>
>     def __init__(self, parent=None):
>         """
>         Constructor
>
>         @param parent reference to the parent widget (defaults to None)
>         @type QWidget (optional)
>         """
>         super().__init__(parent)
>         self.setupUi(self)
>
>         self.tableWidget.keyPressEvent = self.copy_paste
>
> then I add a def
>      def copy_paste(self,event):
>             if event.key() == Qt.Key.Key_C and (event.modifiers() &
>                            Qt.KeyboardModifier.ControlModifier):
>             self.copied_cells = sorted(self.tableWidget.selectedIndexes())
>             print(self.copied_cells)
>         if event.key() == Qt.Key.Key_V and (event.modifiers() &
> Qt.KeyboardModifier.ControlModifier):
>             r = self.tableWidget.currentRow() - self.copied_cells[0].row()
>             c = self.tableWidget.currentColumn() -
> self.copied_cells[0].column()
>             for cell in self.copied_cells:
>                 self.tableWidget.setItem(cell.row() + r, cell.column() +
> c, QTableWidgetItem(cell.data()))
>
>
> The copy_paste work but I can't edit the cells what is wrong??
>


-- 
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cuore. - "Sostiene Pereira", Antonio Tabucchi
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