### Class

# Gtk ListStore

deprecated: 4.10

#### Description [src]

    class Gtk.ListStore : GObject.Object
      implements Gtk.Buildable, Gtk.TreeDragDest, Gtk.TreeDragSource, Gtk.TreeModel, Gtk.TreeSortable {
      /* No available fields */
    }

A list-like data structure that can be used with the `GtkTreeView`.

The `GtkListStore` object is a list model for use with a `GtkTreeView` widget. It implements the `GtkTreeModel` interface, and consequentialy, can use all of the methods available there. It also implements the `GtkTreeSortable` interface so it can be sorted by the view. Finally, it also implements the tree drag and drop interfaces.

The `GtkListStore` can accept most `GType`s as a column type, though it can’t accept all custom types. Internally, it will keep a copy of data passed in (such as a string or a boxed pointer). Columns that accept `GObject`s are handled a little differently. The `GtkListStore` will keep a reference to the object instead of copying the value. As a result, if the object is modified, it is up to the application writer to call `gtk_tree_model_row_changed()` to emit the `GtkTreeModel::row-changed` signal. This most commonly affects lists with `GdkTexture`s stored.

An example for creating a simple list store:

    enum {
      COLUMN_STRING,
      COLUMN_INT,
      COLUMN_BOOLEAN,
      N_COLUMNS
    };

    {
      GtkListStore *list_store;
      GtkTreePath *path;
      GtkTreeIter iter;
      int i;

      list_store = gtk_list_store_new (N_COLUMNS,
                                       G_TYPE_STRING,
                                       G_TYPE_INT,
                                       G_TYPE_BOOLEAN);

      for (i = 0; i < 10; i++)
        {
          char *some_data;

          some_data = get_some_data (i);

          // Add a new row to the model
          gtk_list_store_append (list_store, &iter);
          gtk_list_store_set (list_store, &iter,
                              COLUMN_STRING, some_data,
                              COLUMN_INT, i,
                              COLUMN_BOOLEAN,  FALSE,
                              -1);

          // As the store will keep a copy of the string internally,
          // we free some_data.
          g_free (some_data);
        }

      // Modify a particular row
      path = gtk_tree_path_new_from_string ("4");
      gtk_tree_model_get_iter (GTK_TREE_MODEL (list_store),
                               &iter,
                               path);
      gtk_tree_path_free (path);
      gtk_list_store_set (list_store, &iter,
                          COLUMN_BOOLEAN, TRUE,
                          -1);
    }

`GtkListStore` is deprecated since GTK 4.10, and should not be used in newly written code. You should use `GListStore` instead, and the various list models provided by GTK.

## Performance Considerations

Internally, the `GtkListStore` was originally implemented with a linked list with a tail pointer. As a result, it was fast at data insertion and deletion, and not fast at random data access. The `GtkListStore` sets the `GTK_TREE_MODEL_ITERS_PERSIST` flag, which means that `GtkTreeIter`s can be cached while the row exists. Thus, if access to a particular row is needed often and your code is expected to run on older versions of GTK, it is worth keeping the iter around.

## Atomic Operations

It is important to note that only the methods `gtk_list_store_insert_with_values()` and `gtk_list_store_insert_with_valuesv()` are atomic, in the sense that the row is being appended to the store and the values filled in in a single operation with regard to `GtkTreeModel` signaling. In contrast, using e.g. `gtk_list_store_append()` and then `gtk_list_store_set()` will first create a row, which triggers the `GtkTreeModel::row-inserted` signal on `GtkListStore`. The row, however, is still empty, and any signal handler connecting to `GtkTreeModel::row-inserted` on this particular store should be prepared for the situation that the row might be empty. This is especially important if you are wrapping the `GtkListStore` inside a `GtkTreeModel`Filter and are using a `GtkTreeModel`FilterVisibleFunc. Using any of the non-atomic operations to append rows to the `GtkListStore` will cause the `GtkTreeModel`FilterVisibleFunc to be visited with an empty row first; the function must be prepared for that.

## GtkListStore as GtkBuildable

The GtkListStore implementation of the `GtkBuildable` interface allows to specify the model columns with a `<columns>` element that may contain multiple `<column>` elements, each specifying one model column. The “type” attribute specifies the data type for the column.

Additionally, it is possible to specify content for the list store in the UI definition, with the `<data>` element. It can contain multiple `<row>` elements, each specifying to content for one row of the list model. Inside a `<row>`, the `<col>` elements specify the content for individual cells.

Note that it is probably more common to define your models in the code, and one might consider it a layering violation to specify the content of a list store in a UI definition, data, not presentation, and common wisdom is to separate the two, as far as possible.

An example of a UI Definition fragment for a list store:

    <object class="GtkListStore">
      <columns>
        <column type="gchararray"/>
        <column type="gchararray"/>
        <column type="gint"/>
      </columns>
      <data>
        <row>
          <col id="0">John</col>
          <col id="1">Doe</col>
          <col id="2">25</col>
        </row>
        <row>
          <col id="0">Johan</col>
          <col id="1">Dahlin</col>
          <col id="2">50</col>
        </row>
      </data>
    </object>

Deprecated since: 4.10

Use `GListStore` instead.

#### Ancestors

- GObject

#### Implements

- GtkBuildable
- GtkTreeDragDest
- GtkTreeDragSource
- GtkTreeModel
- GtkTreeSortable

#### Constructors

###### gtk_list_store_new

Creates a new list store.

deprecated: 4.10

###### gtk_list_store_newv

Creates a new `GtkListStore`.

deprecated: 4.10

#### Instance methods

###### gtk_list_store_append

Appends a new row to `list_store`. `iter` will be changed to point to this new row. The row will be empty after this function is called. To fill in values, you need to call `gtk_list_store_set()` or gtk_list_store_set_value().

deprecated: 4.10

###### gtk_list_store_clear

Removes all rows from the list store.

deprecated: 4.10

###### gtk_list_store_insert

Creates a new row at `position`. `iter` will be changed to point to this new row. If `position` is -1 or is larger than the number of rows on the list, then the new row will be appended to the list. The row will be empty after this function is called. To fill in values, you need to call `gtk_list_store_set()` or gtk_list_store_set_value().

deprecated: 4.10

###### gtk_list_store_insert_after

Inserts a new row after `sibling`. If `sibling` is `NULL`, then the row will be prepended to the beginning of the list. `iter` will be changed to point to this new row. The row will be empty after this function is called. To fill in values, you need to call `gtk_list_store_set()` or gtk_list_store_set_value().

deprecated: 4.10

###### gtk_list_store_insert_before

Inserts a new row before `sibling`. If `sibling` is `NULL`, then the row will be appended to the end of the list. `iter` will be changed to point to this new row. The row will be empty after this function is called. To fill in values, you need to call `gtk_list_store_set()` or gtk_list_store_set_value().

deprecated: 4.10

###### gtk_list_store_insert_with_values

Creates a new row at `position`. `iter` will be changed to point to this new row. If `position` is -1, or larger than the number of rows in the list, then the new row will be appended to the list. The row will be filled with the values given to this function.

deprecated: 4.10

###### gtk_list_store_insert_with_valuesv

A variant of `gtk_list_store_insert_with_values()` which takes the columns and values as two arrays, instead of varargs.

deprecated: 4.10

###### gtk_list_store_iter_is_valid

Checks if the given iter is a valid iter for this `GtkListStore`.

deprecated: 4.10

###### gtk_list_store_move_after

Moves `iter` in `store` to the position after `position`. Note that this function only works with unsorted stores. If `position` is `NULL`, `iter` will be moved to the start of the list.

deprecated: 4.10

###### gtk_list_store_move_before

Moves `iter` in `store` to the position before `position`. Note that this function only works with unsorted stores. If `position` is `NULL`, `iter` will be moved to the end of the list.

deprecated: 4.10

###### gtk_list_store_prepend

Prepends a new row to `list_store`. `iter` will be changed to point to this new row. The row will be empty after this function is called. To fill in values, you need to call `gtk_list_store_set()` or gtk_list_store_set_value().

deprecated: 4.10

###### gtk_list_store_remove

Removes the given row from the list store. After being removed, `iter` is set to be the next valid row, or invalidated if it pointed to the last row in `list_store`.

deprecated: 4.10

###### gtk_list_store_reorder

Reorders `store` to follow the order indicated by `new_order`. Note that this function only works with unsorted stores.

deprecated: 4.10

###### gtk_list_store_set

Sets the value of one or more cells in the row referenced by `iter`. The variable argument list should contain integer column numbers, each column number followed by the value to be set. The list is terminated by a -1. For example, to set column 0 with type `G_TYPE_STRING` to “Foo”, you would write `gtk_list_store_set (store, iter, 0, "Foo", -1)`.

deprecated: 4.10

###### gtk_list_store_set_column_types

Sets the types of the columns of a list store.

deprecated: 4.10

###### gtk_list_store_set_valist

See gtk_list_store_set(); this version takes a va_list for use by language bindings.

deprecated: 4.10

###### gtk_list_store_set_value

Sets the data in the cell specified by `iter` and `column`. The type of `value` must be convertible to the type of the column.

deprecated: 4.10

###### gtk_list_store_set_valuesv

A variant of `gtk_list_store_set_valist()` which takes the columns and values as two arrays, instead of varargs. This function is mainly intended for language-bindings and in case the number of columns to change is not known until run-time.

deprecated: 4.10

###### gtk_list_store_swap

Swaps `a` and `b` in `store`. Note that this function only works with unsorted stores.

deprecated: 4.10

##### Methods inherited from GObject (43)

Please see GObject for a full list of methods.

##### Methods inherited from GtkBuildable (1)

###### gtk_buildable_get_buildable_id

Gets the ID of the `buildable` object.

##### Methods inherited from GtkTreeDragDest (2)

###### gtk_tree_drag_dest_drag_data_received

Asks the `GtkTreeDragDest` to insert a row before the path `dest`, deriving the contents of the row from `value`. If `dest` is outside the tree so that inserting before it is impossible, `FALSE` will be returned. Also, `FALSE` may be returned if the new row is not created for some model-specific reason. Should robustly handle a `dest` no longer found in the model!

deprecated: 4.10

###### gtk_tree_drag_dest_row_drop_possible

Determines whether a drop is possible before the given `dest_path`, at the same depth as `dest_path`. i.e., can we drop the data in `value` at that location. `dest_path` does not have to exist; the return value will almost certainly be `FALSE` if the parent of `dest_path` doesn’t exist, though.

deprecated: 4.10

##### Methods inherited from GtkTreeDragSource (3)

###### gtk_tree_drag_source_drag_data_delete

Asks the `GtkTreeDragSource` to delete the row at `path`, because it was moved somewhere else via drag-and-drop. Returns `FALSE` if the deletion fails because `path` no longer exists, or for some model-specific reason. Should robustly handle a `path` no longer found in the model!

deprecated: 4.10

###### gtk_tree_drag_source_drag_data_get

Asks the `GtkTreeDragSource` to return a `GdkContentProvider` representing the row at `path`. Should robustly handle a `path` no longer found in the model!

deprecated: 4.10

###### gtk_tree_drag_source_row_draggable

Asks the `GtkTreeDragSource` whether a particular row can be used as the source of a DND operation. If the source doesn’t implement this interface, the row is assumed draggable.

deprecated: 4.10

##### Methods inherited from GtkTreeModel (28)

Please see GtkTreeModel for a full list of methods.

##### Methods inherited from GtkTreeSortable (6)

###### gtk_tree_sortable_get_sort_column_id

Fills in `sort_column_id` and `order` with the current sort column and the order. It returns `TRUE` unless the `sort_column_id` is `GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID` or `GTK_TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID`.

deprecated: 4.10

###### gtk_tree_sortable_has_default_sort_func

Returns `TRUE` if the model has a default sort function. This is used primarily by GtkTreeViewColumns in order to determine if a model can go back to the default state, or not.

deprecated: 4.10

###### gtk_tree_sortable_set_default_sort_func

Sets the default comparison function used when sorting to be `sort_func`. If the current sort column id of `sortable` is `GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID`, then the model will sort using this function.

deprecated: 4.10

###### gtk_tree_sortable_set_sort_column_id

Sets the current sort column to be `sort_column_id`. The `sortable` will resort itself to reflect this change, after emitting a `GtkTreeSortable::sort-column-changed` signal. `sort_column_id` may either be a regular column id, or one of the following special values:.

deprecated: 4.10

###### gtk_tree_sortable_set_sort_func

Sets the comparison function used when sorting to be `sort_func`. If the current sort column id of `sortable` is the same as `sort_column_id`, then the model will sort using this function.

deprecated: 4.10

###### gtk_tree_sortable_sort_column_changed

Emits a `GtkTreeSortable::sort-column-changed` signal on `sortable`.

deprecated: 4.10

#### Signals

##### Signals inherited from GObject (1)

###### GObject::notify

The notify signal is emitted on an object when one of its properties has its value set through g_object_set_property(), g_object_set(), et al.

##### Signals inherited from GtkTreeModel (5)

###### GtkTreeModel::row-changed

This signal is emitted when a row in the model has changed.

###### GtkTreeModel::row-deleted

This signal is emitted when a row has been deleted.

###### GtkTreeModel::row-has-child-toggled

This signal is emitted when a row has gotten the first child row or lost its last child row.

###### GtkTreeModel::row-inserted

This signal is emitted when a new row has been inserted in the model.

###### GtkTreeModel::rows-reordered

This signal is emitted when the children of a node in the `GtkTreeModel` have been reordered.

##### Signals inherited from GtkTreeSortable (1)

###### GtkTreeSortable::sort-column-changed

The ::sort-column-changed signal is emitted when the sort column or sort order of `sortable` is changed. The signal is emitted before the contents of `sortable` are resorted.

#### Class structure

    struct GtkListStoreClass {
      GObjectClass parent_class;

    }

No description available.

###### Class members

`parent_class: GObjectClass`

  No description available.