Changing QStyleOptionButton (QCheckbox) to use StyleSheet not working????

[jonathan_MVE]

HI,

I am trying to use a style sheet to change a QStyleOptionButton to work as a QCheckBox but display with my own checked/unchecked indicators. I have had success setting the stylesheet on normal checkboxes but in this case I need to use a QStyleOptionButton and this doesnt seem to work? My code is as follows:



QStyleOptionButton option;
//m_checkBoxRect is previously setup
m_checkboxRect.setY(rect.height() / 2 - m_checkboxRect.height() / 2);

QCheckBox* styledCheckBox = new QCheckBox();
styledCheckBox->setGeometry(m_checkboxRect);
styledCheckBox->setCheckState(m_checkboxState);
styledCheckBox->setStyleSheet(
"QCheckedBox::indicator:unchecked { image: url(:/Resources/indicator_off.png);}"
"QCheckedBox::indicator:checked { image: url(:/Resources/indicator_on.png);}"
"QCheckedBox::indicator:indeterminate { image: url(:/Resources/indicator_partial.png);}"
);

option.initFrom(styledCheckBox);
option.rect = m_checkboxRect;

style()->drawControl(QStyle::CE_CheckBox, &option, painter, this);



All I seem to get back is an unchecked checkbox which doesn't respond to my mouse presses.

Does anyone have any ideas as to why this wont work, or perhaps another route??

[jonathan_MVE]

I managed to find a solution to this.

By simply drawing the pixmap rather than the control element I am able to produce th desired results. The mouse press event for the parent widget can allow me to detect mouse clicks over the m_checkboxRect area and therefore maintain the checked state.



switch (m_checkboxState)
{
case Qt::Checked:
option.state = QStyle::State_On;
indicatorPixmap = QPixmap(":/Resources/indicator_on.png");
break;
case Qt::Unchecked:
option.state = QStyle::State_Off;
indicatorPixmap = QPixmap(":/Resources/indicator_off.png");
break;
case Qt::PartiallyChecked:
option.state = QStyle::State_NoChange;
indicatorPixmap = QPixmap(":/Resources/indicator_partial.png");
break;
default:
break;
}

style()->drawItemPixmap(painter, m_checkboxRect, 0, indicatorPixmap );