//Creating custom property slot Q_PROPERTY(QColor color READ color WRITE setColor) //Code to handle read & write operations on the property QColor CustomCheckBox::color() const { return m_color; } void CustomCheckBox::setColor(const QColor& color) { if (color != m_color) { m_color = color; update(); emit colorChanged(m_color); } }
//Creating custom property slots Q_PROPERTY(QColor fillColor READ fillColor WRITE setFillColor) Q_PROPERTY(QColor borderColor READ borderColor WRITE setBorderColor) //Code to handle read & write operations on the properties QColor CustomShape::fillColor() const { return m_fillColor; } void CustomShape::setFillColor(const QColor& color) { if (color != m_fillColor) { m_fillColor = color; update(); emit fillColorChanged(m_fillColor); } } QColor CustomShape::borderColor() const { return m_borderColor; } void CustomShape::setBorderColor(const QColor& color) { if (color != m_borderColor) { m_borderColor = color; update(); emit borderColorChanged(m_borderColor); } }In both of these examples, PropertySlot is used to provide an easy and intuitive way for the user to set and get the values of custom properties. The Qt library is used to provide the PropertySlot class.