QPushButton setDown on click

Question

When a QPushButton is clicked, I want it to remain pressed down until clicked again.

void MainWindow::itemClicked(){

    QPushButton *clickedItem = qobject_cast<QPushButton *>(sender());

    qDebug() << clickedItem->isDown();

    if(!clickedItem->isDown())
        clickedItem->setDown(true);
    else
        clickedItem->setDown(false);
}

This doesn't seem to work. It will cause the button to be pressed down indefinitely.

clickedItem->isDown() is always false.

Nejat · Accepted Answer · 2014-08-14 10:00:54Z

7

isDown always returns false because you are checking it in a slot connected to the clicked signal. The clicked signal is emited when you press down the push button and release it. So every time the button is pressed and released the clicked signal is emited.

setCheckable() would work for you. It will make the button toggle. So when youu click, it'll stay in down state until you click it again.

answered Aug 14, 2014 at 10:00

Nejat

32.9k13 gold badges110 silver badges146 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Tim Visée · Accepted Answer · 2014-08-14 07:25:09Z

4

It should work out of the box using QAbstractButton::setCheckable(bool).

When set to true it should act the way you want it to act.

edited Aug 14, 2014 at 7:25

Tim Visée

3,3084 gold badges48 silver badges59 bronze badges

answered Aug 14, 2014 at 7:19

Zaiborg

2,52221 silver badges28 bronze badges

5 Comments

Quaxton Hale Over a year ago

Thanks, I know about setCheckable. I'm wondering why isDown doesn't work as expected.

thuga Over a year ago

@МикроПингвин Probably because you do it in a slot which is connected to a clicked signal, and the button gets released before the slot is executed. That is why isDown always returns false.

Quaxton Hale Over a year ago

How would I fix this? Would I need to implement a release slot?

thuga Over a year ago

@МикроПингвин Why bother? Why not just use QAbstractButton::setCheckable?

Zaiborg Over a year ago

as @thuga mentioned, why not use a "checkable pushbutton" and if you need the state of the button ask for it using QAbstractButton::isChecked()

Collectives™ on Stack Overflow

QPushButton setDown on click

2 Answers 2

Comments

5 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

5 Comments

Your Answer

Sign up or log in

Post as a guest

Related