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