Restrict QItemEditorFactory to one widget

[pratham_shah]

Hi,

I have a custom QDialog (say "MyDialog") with a QTableWidget to display my data.
Now in MyDialog constructor I have the following code

MyDialog::MyDialog(QWidget *parent) : QDialog(parent)
{
    QItemEditorFactory *myFactory = new QItemEditorFactory;
    QItemEditorCreatorBase *myEditorCreator = new QStandardItemEditorCreator<MyItemEditor>();
    myFactory->registerEditor(QVariant::String, myEditorCreator );
    QItemEditorFactory::setDefaultFactory(myFactory);
 
    setupTable();
}

MyDialog::MyDialog(QWidget *parent) : QDialog(parent)
{
    QItemEditorFactory *myFactory = new QItemEditorFactory;
    QItemEditorCreatorBase *myEditorCreator = new QStandardItemEditorCreator<MyItemEditor>();
    myFactory->registerEditor(QVariant::String, myEditorCreator );
    QItemEditorFactory::setDefaultFactory(myFactory);

    setupTable();
}

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I have 2 queries regarding the code.
Firstly Who is responsible for deleting myFactory ?
Secondly, what is the scope of myFactory and hence the editor MyItemEditor ?
In other words will a different QTableWidget in some other place also use this factory ?

[wysota]

Firstly Who is responsible for deleting myFactory ?

Qt

Secondly, what is the scope of myFactory and hence the editor MyItemEditor ?

Scope of the factory is the whole application unless you delete it yourself. Scope of the editor is the time it takes to edit a single cell in the table.

In other words will a different QTableWidget in some other place also use this factory ?

Yes, since you have set it as default.

[pratham_shah]

So then how to restrict the QItemEditorFactory to one particular widget ?

[ChrisW67]

You create a QStyledItemDelegate that you apply to only the one view.

[wysota]

Apply a custom item delegate on the widget and set the item editor factory on that delegate directly instead of setting it as default.