Try and avoid problem reported by users like RDChrisco with cards that only support 512 texture size, and disable backgrounds. Also, reorganise the rq flags sprite loading a bit. Needs testing to make sure it matches the sprite uses. It should though.
#include <QLabel>
#include <QRect>
#include <QList>
#include <QMouseEvent>
class PixLabel : public QLabel
{
Q_OBJECT
public:
PixLabel();
QList<QRect> rects;
public slots:
void AddRect();
private:
void paintEvent(QPaintEvent * event);
void mousePressEvent(QMouseEvent * e);
};