Gtk.TreeViewColumn.prototype.set_min_width

function set_min_width(min_width:Number):void {
    // Gjs wrapper for gtk_tree_view_column_set_min_width()
}

Sets the minimum width of the tree_column. If min_width is -1, then the minimum width is unset.

min_width

The minimum width of the column in pixels, or -1.