Trying to Draw QRubberBand but QRubberBand not displayed properly

Swapnil_Shelke

Qt version 5.8.0
Windows 7

I am drawing a QRubberBand on a QLable, also coloring the QRubberBand Border as Yellow but the whole rectangle is filled with Yellow color.

I only want the QRubberBand borders to be yellow and not the inside of the QRubberBand

Eddy

Hi,

Could you show your code that sets the color to Yellow?

Eddy

Swapnil_Shelke

the following is the code i am using

dummyband = new QRubberBand(QRubberBand::Rectangle, this);

QPalette palette;
//palette.setBrush(QPalette::Foreground, QBrush(color));
//palette.setBrush(QPalette::Base, QBrush(color));
palette.setBrush(QPalette::Highlight, QBrush(yellow));
dummyband->setPalette(palette);
dummyband->setGeometry(QRect(topLeft, bottomRight));
dummyband->show();

mrjj

Hi
The docs says

Rectangle A QRubberBand can represent a rectangle. Some
styles will interpret this as a filled (often
semi-transparent) rectangle, or a rectangular
outline.

It's also filled on windows 10 so I guess it's by design / also affected by the platform style.

It draws with QStyle::CE_RubberBand
so you could override with http://doc.qt.io/qt-5/qproxystyle.html

class MRubberStyle : public QProxyStyle {
 public:
  MRubberStyle() : QProxyStyle() {}
  ~MRubberStyle() {}

  virtual void drawControl(ControlElement element, const QStyleOption* option, QPainter* painter, const QWidget* widget = 0) const {
    switch(element) {
      case CE_RubberBand:
        // draw as u want
        return;
      default:
        QApplication::style()->drawControl(element, option, painter, widget);
    }
  }
};
...
 app.setStyle( new MRubberStyle );

Vinod Kuntoji

@Swapnil_Shelke ,

You should not use setBrush, it will fill your rectangle with yellow color, Use setPen with yellow color, it will set the yellow border.

Swapnil_Shelke

@Vinod-Kuntoji

not getting setPen in QPalette

Vinod Kuntoji

@Swapnil_Shelke ,
OK. try this,
rubberBand->setPalette(Qt::transparent);

Swapnil_Shelke

@Vinod-Kuntoji

No not working ,
rubberBand->setPalette(Qt::transparent); removes the color from borders also..