Inherited Style Sheet

[johnmauer]

I have been unable to directly change a style sheet in a class inherited from QWidget, although it works when the class is QWidget. The simplified code that does not work (nothing in constructor):

class Banner : public QWidget
{
	Q_OBJECT
public:
	Banner(QWidget *parent=0);
	~Banner();
};
 
	banner = new Banner;
	banner->setStyleSheet("background-color: rgb(0, 100, 200);");

class Banner : public QWidget
{
	Q_OBJECT
public:
	Banner(QWidget *parent=0);
	~Banner();
};

	banner = new Banner;
	banner->setStyleSheet("background-color: rgb(0, 100, 200);");

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While this does work:

banner = new QWidget;
	banner->setStyleSheet("background-color: rgb(0, 100, 200);");

banner = new QWidget;
	banner->setStyleSheet("background-color: rgb(0, 100, 200);");

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I'm sure to have missed some understanding here and would appreciate help. Thanks

[johnmauer]

Now if only I could read ALL the documentation!

If you subclass from QWidget, you need to provide a paintEvent for your custom QWidget as below:

void CustomWidget::paintEvent(QPaintEvent *)
 {
     QStyleOption opt;
     opt.init(this);
     QPainter p(this);
     style()->drawPrimitive(QStyle::PE_Widget, &opt, &p, this);
 }

void CustomWidget::paintEvent(QPaintEvent *)
 {
     QStyleOption opt;
     opt.init(this);
     QPainter p(this);
     style()->drawPrimitive(QStyle::PE_Widget, &opt, &p, this);
 }

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It works fine now...