How to prevent QSpinBox from automatically highlighting contents

南笙酒味 提交于 2019-12-23 09:33:54

问题


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?


回答1:


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.



来源:https://stackoverflow.com/questions/12892129/how-to-prevent-qspinbox-from-automatically-highlighting-contents

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