Connecting the clear button of a QLineEdit to a custom slot

[l3u_]

Hi :-)

Is it possible to connect a QLineEdit's clear button that can be displayed via QLineEdit::setClearButtonEnabled() to a custom slot? I found https://bugreports.qt.io/browse/QTBUG-36257 which contains the following code to do so:

for (int i(0); i < myLineEdit->children().size(); ++i) {
    QAction *myClearAction(qobject_cast<QAction *>(myLineEdit->children().at(i)));
    if (myClearAction) {
        connect(myClearAction, &QAction::triggered,
            myLineEdit, &QLineEdit::returnPressed,
            Qt::QueuedConnection);
    }
}

but I wondered if anything has been changed concerning this since then. The solution posted will probably work, but looks a bit like a hack to me ;-)

[mrjj]

@l3u_
Hi
Should still work the same.
And yes its a bit of hack since we look up its child but
on the other hand, it wont crash if not there and
we just hook up to your slot.
So i would use it, even if not pretty.

[SGaist]

Hi,

The alternative is for you to add your own action to the QLineEdit so you ensure that you have full control over it.

[l3u_]

@SGaist Hey, that's actually a very good idea I did not think about yet – seems like I could simply as well add my own "clear" button with the same icon ;-) Thanks for the hint … sometimes, you miss the forest for the trees!