Meine Lösung:
#ifndef CHECKBOX_H
#define CHECKBOX_H
#include <QCheckBox>
#include <QHBoxLayout>
#include <QLabel>
class CheckBox : public QCheckBox
{
Q_OBJECT
public:
explicit CheckBox(QWidget *parent = 0);
void setText(const QString & text);
QSize sizeHint() const;
bool hitButton(const QPoint &pos) const;
protected:
void paintEvent(QPaintEvent *);
private:
QHBoxLayout* _layout;
QLabel* _label;
};
#endif // CHECKBOX_H
#include "checkbox.h"
#include <QStylePainter>
#include <QStyleOption>
#define MARGIN 4 // hardcoded spacing acording to QCommonStyle implementation
CheckBox::CheckBox(QWidget *parent) : QCheckBox(parent)
{
setSizePolicy(QSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred, QSizePolicy::CheckBox));
QStyleOptionButton opt;
initStyleOption(&opt);
QRect label_rect = style()->subElementRect(QStyle::SE_CheckBoxContents, &opt, this);
_label = new QLabel(this);
_label->setWordWrap(true);
_label->setMouseTracking(true);
//_label->setMinimumHeight(label_rect.height());
_layout = new QHBoxLayout(this);
_layout->setContentsMargins(label_rect.left()+MARGIN, MARGIN/2, MARGIN/2, MARGIN/2);
_layout->setSpacing(0);
_layout->addWidget(_label);
setLayout(_layout);
}
void CheckBox::setText(const QString & text)
{
_label->setText(text);
QCheckBox::setText(text);
}
void CheckBox::paintEvent(QPaintEvent *)
{
QStylePainter p(this);
QStyleOptionButton opt;
initStyleOption(&opt);
QStyleOptionButton subopt = opt;
subopt.rect = style()->subElementRect(QStyle::SE_CheckBoxIndicator, &opt, this);
subopt.rect.moveTop(opt.rect.top()+MARGIN/2); // align indicator to top
style()->proxy()->drawPrimitive(QStyle::PE_IndicatorCheckBox, &subopt, &p, this);
if (opt.state & QStyle::State_HasFocus)
{
QStyleOptionFocusRect fropt;
fropt.QStyleOption::operator=(opt);
fropt.rect = style()->subElementRect(QStyle::SE_CheckBoxFocusRect, &opt, this);
style()->proxy()->drawPrimitive(QStyle::PE_FrameFocusRect, &fropt, &p, this);
}
}
QSize CheckBox::sizeHint() const
{
return QSize(); // will be calculated by layout
}
bool CheckBox::hitButton(const QPoint &pos) const
{
QStyleOptionButton opt;
initStyleOption(&opt);
return opt.rect.contains(pos); // hit all button
}
Dies funktioniert in Qt 5.6 – jtooker