How to prevent QSpinBox from automatically highlighting contents

Question

QSpinBox makes its contents selected (highlighted) upon using up/down buttons. Is there any way to disable this? Is there any way to clear selection, other than use my own subclass of QSpinBox to access the underlying QLineEdit?

score 11 · Accepted Answer · answered Oct 15 '12 at 11:32

There's no way to directly disable it, but you can do a bit of a hack:

void Window::onSpinBoxValueChanged() // slot
{
    spinBox->findChild<QLineEdit*>()->deselect();
}

I recommend connecting to this using a queued connection, like this:

connect(spinBox, SIGNAL(valueChanged(int)), this, SLOT(onSpinBoxValueChanged()), Qt::QueuedConnection);

This will ensure that the slot is called after the line edit is highlighted.

Adriel Jr · Answer 2 · 2021-09-21T22:41:38.170

2

Same solution as @Anthony's, but shorter:

connect(spinBox, static_cast<void (QSpinBox::*)(int)>(&QSpinBox::valueChanged), spinBox,
            [&, spinBox](){spinBox->findChild<QLineEdit*>()->deselect();}, Qt::QueuedConnection);

edited Sep 21 '21 at 22:41

answered Sep 20 '21 at 21:29

Adriel Jr

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25

Thanks, but this is a duplicate of the already accepted answer (other than it uses the new connect syntax with lambda, which was not available at the time of writing). – Violet Giraffe Sep 21 '21 at 11:44
I agree, but still worth posting. – Adriel Jr Sep 21 '21 at 13:47

How to prevent QSpinBox from automatically highlighting contents

2 Answers2

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