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Guys please let me know how to uncheck the check box using QT C++.
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The following code is supposed to set the text of nameLine form to this box is unchecked when the QCheckBox instance checkbox has state Unchecked. QCheckBox *checkbox = new QCheckBox ("paid with cash!", this); checkbox->setCheckState (Qt::Unchecked); if (checkbox->checkState (Qt::Unchecked)) { nameLine->setText ("the box is unchecked"); }
The QCheckBox widget provides a checkbox with a text label. More... A QCheckBox is an option button that can be switched on (checked) or off (unchecked). Checkboxes are typically used to represent features in an application that can be enabled or disabled without affecting others.
Alternatively you could use setCheckState () setCheckState () method from QCheckButton. This gives you the option to 'partially uncheck' it. Show activity on this post.
Whenever a checkbox is checked or cleared, it emits the signal stateChanged (). Connect to this signal if you want to trigger an action each time the checkbox changes state. You can use isChecked () to query whether or not a checkbox is checked.
You can use the setChecked() method from QAbstractButton.
QCheckButton b;
b.setChecked( false ); // Uncheck it
Alternatively you could use setCheckState() setCheckState() method from QCheckButton. This gives you the option to 'partially uncheck' it.
QCheckButton b;
b.setCheckState( Qt::Unchecked );
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