Returns the column of @tree_view’s model which is being used for displaying tooltips on @tree_view’s rows.
Return: the index of the tooltip column that is currently being used, or -1 if this is disabled.
2.12
See Implementation
Returns the column of @tree_view’s model which is being used for displaying tooltips on @tree_view’s rows.
Return: the index of the tooltip column that is currently being used, or -1 if this is disabled.