Using an Eventfilter

[mpergand]

In the case of a form, you simply identify the field by its name:
ui->field1
ui->filed2
etc

in your slot you can do:

void doubleClickOnField()
{
QObject* obj=sender();

if(obj==ui->field1) { }
else if(obj==ui->field2 {}
... etc
}

Also, you will need to do a cast to retreive the particular object data. For ex:

QLineEdit* edit=qobject_cast<QLineEdit*>(sender());

if(edit !=nullptr) // beware could be null
{
QString text=edit.tex();
}

[SGaist]

Not trying to undermine your efforts but I think your users are going to be pretty surprised.

Personally, I don't expect anything other than text selection when I double click on a line edit type widget.

If a report shall be generate, I would rather have an explicit button for that.