Gtk.TreeView.prototype.set_fixed_height_mode

function set_fixed_height_mode(enable:Boolean):void {
    // Gjs wrapper for gtk_tree_view_set_fixed_height_mode()
}

Enables or disables the fixed height mode of tree_view. Fixed height mode speeds up Gtk.TreeView by assuming that all rows have the same height. Only enable this option if all rows are the same height and all columns are of type Gtk.TreeViewColumnSizing.fixed.

Since 2.6