Enable Drag and Drop to open files in this widget
In KWrite (https://cgit.kde.org/kate.git/tree/kwrite/kwrite.cpp#n94)
connect(m_view, SIGNAL(dropEventPass(QDropEvent*)), this, SLOT(slotDropEvent(QDropEvent*)));
This is not working for us we need to find out why and fix it so DnD works on this widget.