Returns the #GtkPopover that pops out of the button. If the button is not using a #GtkPopover, this function returns %NULL.
Return: a #GtkPopover or %NULL
3.12
See Implementation
Returns the #GtkPopover that pops out of the button. If the button is not using a #GtkPopover, this function returns %NULL.
Return: a #GtkPopover or %NULL