Method ~QCPLayer

3rdparty/qcustomplot/qcustomplot.cpp:1079–1091

}

QCPLayer::~QCPLayer()
{
  // If child layerables are still on this layer, detach them, so they don't try to reach back to this
  // then invalid layer once they get deleted/moved themselves. This only happens when layers are deleted
  // directly, like in the QCustomPlot destructor. (The regular layer removal procedure for the user is to
  // call QCustomPlot::removeLayer, which moves all layerables off this layer before deleting it.)
  
  while (!mChildren.isEmpty())
    mChildren.last()->setLayer(nullptr); // removes itself from mChildren via removeChild()
  
  if (mParentPlot->currentLayer() == this)
    qDebug() << Q_FUNC_INFO << "The parent plot's mCurrentLayer will be a dangling pointer. Should have been set to a valid layer or nullptr beforehand.";
}

/*!
  Sets whether this layer is visible or not. If \a visible is set to false, all layerables on this