QStatusBar remove padding

Question

I want to add a colored Widget over the full QStatusBar. I added a QLabel with red background-color but there is a padding around the label, which i can't remove.

what i tried:

• setSizeGripEnabled(false)
• setStyleSheet("QStatusBar { border: 0px; padding: 0px; margin: 0px; }" "QStatusBar::item { border: 0px; padding: 0px; margin: 0px; }"
• layout()->setContentsMargins(0, 0, 0, 0);

Update: Example Code:

  QWidget *w = new QWidget;
  QHBoxLayout *layout = new QHBoxLayout;
  QStatusBar *statusBar = new QStatusBar;
  QLabel *label = new QLabel("Example");

  w->setStyleSheet("background-color: green");

  label->setStyleSheet("background-color: red");

  statusBar->addPermanentWidget(label, 1);
  statusBar->layout()->setContentsMargins(0, 0, 0, 0);
  statusBar->setSizeGripEnabled(false);

  setStatusBar(statusBar);

  w->setLayout(layout);
  setCentralWidget(w);
}

Answer 1

I think it is not possible without pointer hacking or reimplementing all QStatusBar functionality because QStatusBar implementation based on pimpl idiom, which means some implementation hidden in private headers and borders between QStatusBar widget and children widgets are hardcoded in qstatusbar.cpp

QRect ir = item->w->geometry().adjusted(-2, -1, 2, 1);
...
QStyleOption opt(0);
opt.rect = ir;
...
style()->drawPrimitive(QStyle::PE_FrameStatusBarItem, &opt, &p, item->w);

Answer 2

QStatusBar{         
        min-height: 20px;
}

use the min-height css property.