## GtkTreeStore GtkTreeStore — A tree-like data structure that can be used with the GtkTreeView |

## Synopsis

    #include <gtk/gtk.h>

                GtkTreeStore;
    GtkTreeStore* gtk_tree_store_new            (gint n_columns,
                                                 ...);
    GtkTreeStore* gtk_tree_store_newv           (gint n_columns,
                                                 GType *types);
    void        gtk_tree_store_set_column_types (GtkTreeStore *tree_store,
                                                 gint n_columns,
                                                 GType *types);
    void        gtk_tree_store_set_value        (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter,
                                                 gint column,
                                                 GValue *value);
    void        gtk_tree_store_set              (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter,
                                                 ...);
    void        gtk_tree_store_set_valist       (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter,
                                                 va_list var_args);
    gboolean    gtk_tree_store_remove           (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter);
    void        gtk_tree_store_insert           (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter,
                                                 GtkTreeIter *parent,
                                                 gint position);
    void        gtk_tree_store_insert_before    (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter,
                                                 GtkTreeIter *parent,
                                                 GtkTreeIter *sibling);
    void        gtk_tree_store_insert_after     (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter,
                                                 GtkTreeIter *parent,
                                                 GtkTreeIter *sibling);
    void        gtk_tree_store_prepend          (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter,
                                                 GtkTreeIter *parent);
    void        gtk_tree_store_append           (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter,
                                                 GtkTreeIter *parent);
    gboolean    gtk_tree_store_is_ancestor      (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter,
                                                 GtkTreeIter *descendant);
    gint        gtk_tree_store_iter_depth       (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter);
    void        gtk_tree_store_clear            (GtkTreeStore *tree_store);
    gboolean    gtk_tree_store_iter_is_valid    (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter);
    void        gtk_tree_store_reorder          (GtkTreeStore *tree_store,
                                                 GtkTreeIter *parent,
                                                 gint *new_order);
    void        gtk_tree_store_swap             (GtkTreeStore *tree_store,
                                                 GtkTreeIter *a,
                                                 GtkTreeIter *b);
    void        gtk_tree_store_move_before      (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter,
                                                 GtkTreeIter *position);
    void        gtk_tree_store_move_after       (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter,
                                                 GtkTreeIter *position);

## Object Hierarchy

      GObject
       +----GtkTreeStore

## Implemented Interfaces

GtkTreeStore implements GtkTreeModel, GtkTreeDragSource, GtkTreeDragDest and GtkTreeSortable.

## Description

The GtkTreeStore 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.

## Details

### GtkTreeStore

    typedef struct _GtkTreeStore GtkTreeStore;

### gtk_tree_store_new ()

    GtkTreeStore* gtk_tree_store_new            (gint n_columns,
                                                 ...);

Creates a new tree store as with `n_columns` columns each of the types passed in. Note that only types derived from standard GObject fundamental types are supported.

As an example, `gtk_tree_store_new (3, G_TYPE_INT, G_TYPE_STRING, GDK_TYPE_PIXBUF);` will create a new GtkTreeStore with three columns, of type int, string and GdkPixbuf respectively.

`n_columns` : | number of columns in the tree store
`...` : | all GType types for the columns, from first to last
Returns : | a new GtkTreeStore

### gtk_tree_store_newv ()

    GtkTreeStore* gtk_tree_store_newv           (gint n_columns,
                                                 GType *types);

Non vararg creation function. Used primarily by language bindings.

`n_columns` : | number of columns in the tree store
`types` : | an array of GType types for the columns, from first to last
Returns : | a new GtkTreeStore

### gtk_tree_store_set_column_types ()

    void        gtk_tree_store_set_column_types (GtkTreeStore *tree_store,
                                                 gint n_columns,
                                                 GType *types);

This function is meant primarily for GObjects that inherit from GtkTreeStore, and should only be used when constructing a new GtkTreeStore. It will not function after a row has been added, or a method on the GtkTreeModel interface is called.

`tree_store` : | A GtkTreeStore
`n_columns` : | Number of columns for the tree store
`types` : | An array of GType types, one for each column

### gtk_tree_store_set_value ()

    void        gtk_tree_store_set_value        (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter,
                                                 gint column,
                                                 GValue *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.

`tree_store` : | a GtkTreeStore
`iter` : | A valid GtkTreeIter for the row being modified
`column` : | column number to modify
`value` : | new value for the cell

### gtk_tree_store_set ()

    void        gtk_tree_store_set              (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter,
                                                 ...);

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_tree_store_set (store, iter, 0, "Foo", -1)`.

`tree_store` : | A GtkTreeStore
`iter` : | A valid GtkTreeIter for the row being modified
`...` : | pairs of column number and value, terminated with -1

### gtk_tree_store_set_valist ()

    void        gtk_tree_store_set_valist       (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter,
                                                 va_list var_args);

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

`tree_store` : | A GtkTreeStore
`iter` : | A valid GtkTreeIter for the row being modified
`var_args` : | va_list of column/value pairs

### gtk_tree_store_remove ()

    gboolean    gtk_tree_store_remove           (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter);

Removes `iter` from `tree_store`. After being removed, `iter` is set to the next valid row at that level, or invalidated if it previously pointed to the last one.

`tree_store` : | A GtkTreeStore
`iter` : | A valid GtkTreeIter
Returns : | `TRUE` if `iter` is still valid, `FALSE` if not.

### gtk_tree_store_insert ()

    void        gtk_tree_store_insert           (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter,
                                                 GtkTreeIter *parent,
                                                 gint position);

Creates a new row at `position`. If parent is non-`NULL`, then the row will be made a child of `parent`. Otherwise, the row will be created at the toplevel. If `position` is larger than the number of rows at that level, then the new row will be inserted 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_tree_store_set()` or `gtk_tree_store_set_value()`.

`tree_store` : | A GtkTreeStore
`iter` : | An unset GtkTreeIter to set to the new row
`parent` : | A valid GtkTreeIter, or `NULL`
`position` : | position to insert the new row

### gtk_tree_store_insert_before ()

    void        gtk_tree_store_insert_before    (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter,
                                                 GtkTreeIter *parent,
                                                 GtkTreeIter *sibling);

Inserts a new row before `sibling`. If `sibling` is `NULL`, then the row will be appended to `parent` 's children. If `parent` and `sibling` are `NULL`, then the row will be appended to the toplevel. If both `sibling` and `parent` are set, then `parent` must be the parent of `sibling`. When `sibling` is set, `parent` is optional.

`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_tree_store_set()` or `gtk_tree_store_set_value()`.

`tree_store` : | A GtkTreeStore
`iter` : | An unset GtkTreeIter to set to the new row
`parent` : | A valid GtkTreeIter, or `NULL`
`sibling` : | A valid GtkTreeIter, or `NULL`

### gtk_tree_store_insert_after ()

    void        gtk_tree_store_insert_after     (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter,
                                                 GtkTreeIter *parent,
                                                 GtkTreeIter *sibling);

Inserts a new row after `sibling`. If `sibling` is `NULL`, then the row will be prepended to `parent` 's children. If `parent` and `sibling` are `NULL`, then the row will be prepended to the toplevel. If both `sibling` and `parent` are set, then `parent` must be the parent of `sibling`. When `sibling` is set, `parent` is optional.

`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_tree_store_set()` or `gtk_tree_store_set_value()`.

`tree_store` : | A GtkTreeStore
`iter` : | An unset GtkTreeIter to set to the new row
`parent` : | A valid GtkTreeIter, or `NULL`
`sibling` : | A valid GtkTreeIter, or `NULL`

### gtk_tree_store_prepend ()

    void        gtk_tree_store_prepend          (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter,
                                                 GtkTreeIter *parent);

Prepends a new row to `tree_store`. If `parent` is non-`NULL`, then it will prepend the new row before the first child of `parent`, otherwise it will prepend a row to the top level. `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_tree_store_set()` or `gtk_tree_store_set_value()`.

`tree_store` : | A GtkTreeStore
`iter` : | An unset GtkTreeIter to set to the prepended row
`parent` : | A valid GtkTreeIter, or `NULL`

### gtk_tree_store_append ()

    void        gtk_tree_store_append           (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter,
                                                 GtkTreeIter *parent);

Appends a new row to `tree_store`. If `parent` is non-`NULL`, then it will append the new row after the last child of `parent`, otherwise it will append a row to the top level. `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_tree_store_set()` or `gtk_tree_store_set_value()`.

`tree_store` : | A GtkTreeStore
`iter` : | An unset GtkTreeIter to set to the appended row
`parent` : | A valid GtkTreeIter, or `NULL`

### gtk_tree_store_is_ancestor ()

    gboolean    gtk_tree_store_is_ancestor      (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter,
                                                 GtkTreeIter *descendant);

Returns `TRUE` if `iter` is an ancestor of `descendant`. That is, `iter` is the parent (or grandparent or great-grandparent) of `descendant`.

`tree_store` : | A GtkTreeStore
`iter` : | A valid GtkTreeIter
`descendant` : | A valid GtkTreeIter
Returns : | `TRUE`, if `iter` is an ancestor of `descendant`

### gtk_tree_store_iter_depth ()

    gint        gtk_tree_store_iter_depth       (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter);

Returns the depth of `iter`. This will be 0 for anything on the root level, 1 for anything down a level, etc.

`tree_store` : | A GtkTreeStore
`iter` : | A valid GtkTreeIter
Returns : | The depth of `iter`

### gtk_tree_store_clear ()

    void        gtk_tree_store_clear            (GtkTreeStore *tree_store);

Removes all rows from `tree_store`

`tree_store` : | a GtkTreeStore

### gtk_tree_store_iter_is_valid ()

    gboolean    gtk_tree_store_iter_is_valid    (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter);

WARNING: This function is slow. Only use it for debugging and/or testing purposes.

Checks if the given iter is a valid iter for this GtkTreeStore.

`tree_store` : | A GtkTreeStore.
`iter` : | A GtkTreeIter.
Returns : | `TRUE` if the iter is valid, `FALSE` if the iter is invalid.

Since 2.2

### gtk_tree_store_reorder ()

    void        gtk_tree_store_reorder          (GtkTreeStore *tree_store,
                                                 GtkTreeIter *parent,
                                                 gint *new_order);

Reorders the children of `parent` in `tree_store` to follow the order indicated by `new_order`. Note that this function only works with unsorted stores.

`tree_store` : | A GtkTreeStore.
`parent` : | A GtkTreeIter.
`new_order` : | an array of integers mapping the new position of each child to its old position before the re-ordering, i.e. `new_order``[newpos] = oldpos`.

Since 2.2

### gtk_tree_store_swap ()

    void        gtk_tree_store_swap             (GtkTreeStore *tree_store,
                                                 GtkTreeIter *a,
                                                 GtkTreeIter *b);

Swaps `a` and `b` in the same level of `tree_store`. Note that this function only works with unsorted stores.

`tree_store` : | A GtkTreeStore.
`a` : | A GtkTreeIter.
`b` : | Another GtkTreeIter.

Since 2.2

### gtk_tree_store_move_before ()

    void        gtk_tree_store_move_before      (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter,
                                                 GtkTreeIter *position);

Moves `iter` in `tree_store` to the position before `position`. `iter` and `position` should be in the same level. Note that this function only works with unsorted stores. If `position` is `NULL`, `iter` will be moved to the end of the level.

`tree_store` : | A GtkTreeStore.
`iter` : | A GtkTreeIter.
`position` : | A GtkTreeIter or `NULL`.

Since 2.2

### gtk_tree_store_move_after ()

    void        gtk_tree_store_move_after       (GtkTreeStore *tree_store,
                                                 GtkTreeIter *iter,
                                                 GtkTreeIter *position);

Moves `iter` in `tree_store` to the position after `position`. `iter` and `position` should be in the same level. Note that this function only works with unsorted stores. If `position` is `NULL`, `iter` will be moved to the start of the level.

`tree_store` : | A GtkTreeStore.
`iter` : | A GtkTreeIter.
`position` : | A GtkTreeIter.

Since 2.2

## See Also

GtkTreeModel, GtkTreeStore