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!