Containers should emit this when their descendant has been presented as the
current visible child. This allows dock items to do lazy initialization of
content once the widgetry is visible to the user.
Currently, this is best effort, as there are a number of situations that
make covering all cases problematic.
Emits the #DzlDockItem::presented signal.
Containers should emit this when their descendant has been presented as the current visible child. This allows dock items to do lazy initialization of content once the widgetry is visible to the user.
Currently, this is best effort, as there are a number of situations that make covering all cases problematic.