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GtkTreeStore

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

Types and Values

struct GtkTreeStore

Object Hierarchy

    GObject
    ╰── GtkTreeStore

Implemented Interfaces

GtkTreeStore implements GtkTreeModel, GtkTreeDragSource, GtkTreeDragDest, GtkTreeSortable and GtkBuildable.

Includes

#include <gtk/gtk.h>

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.

GtkTreeStore as GtkBuildable

The GtkTreeStore 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.

Example 24. A UI Definition fragment for a tree store

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<object class="GtkTreeStore">
  <columns>
    <column type="gchararray"/>
    <column type="gchararray"/>
    <column type="gint"/>
  </columns>
</object>

Functions

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.

Parameters

n_columns

number of columns in the tree store

 

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.

Parameters

n_columns

number of columns in the tree store

 

types

an array of GType types for the columns, from first to last.

[array length=n_columns]

Returns

a new GtkTreeStore.

[transfer full]


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.

Parameters

tree_store

A GtkTreeStore

 

n_columns

Number of columns for the tree store

 

types

An array of GType types, one for each column.

[array length=n_columns]

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.

Parameters

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).

The value will be referenced by the store if it is a G_TYPE_OBJECT, and it will be copied if it is a G_TYPE_STRING or G_TYPE_BOXED.

Parameters

tree_store

A GtkTreeStore

 

iter

A valid GtkTreeIter for the row being modified

 

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.

Parameters

tree_store

A GtkTreeStore

 

iter

A valid GtkTreeIter for the row being modified

 

var_args

va_list of column/value pairs  

gtk_tree_store_set_valuesv ()

void
gtk_tree_store_set_valuesv (GtkTreeStore *tree_store,
                            GtkTreeIter *iter,
                            gint *columns,
                            GValue *values,
                            gint n_values);

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

Parameters

tree_store

A GtkTreeStore

 

iter

A valid GtkTreeIter for the row being modified

 

columns

an array of column numbers.

[array length=n_values]

values

an array of GValues.

[array length=n_values]

n_values

the length of the columns and values arrays

 

Since: 2.12


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.

Parameters

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().

Parameters

tree_store

A GtkTreeStore

 

iter

An unset GtkTreeIter to set to the new row.

[out]

parent

A valid GtkTreeIter, or NULL.

[allow-none]

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().

Parameters

tree_store

A GtkTreeStore

 

iter

An unset GtkTreeIter to set to the new row.

[out]

parent

A valid GtkTreeIter, or NULL.

[allow-none]

sibling

A valid GtkTreeIter, or NULL.

[allow-none]

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().

Parameters

tree_store

A GtkTreeStore

 

iter

An unset GtkTreeIter to set to the new row.

[out]

parent

A valid GtkTreeIter, or NULL.

[allow-none]

sibling

A valid GtkTreeIter, or NULL.

[allow-none]

gtk_tree_store_insert_with_values ()

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

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

Calling gtk_tree_store_insert_with_values (tree_store, iter, position, ...) has the same effect as calling

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gtk_tree_store_insert (tree_store, iter, position);
gtk_tree_store_set (tree_store, iter, ...);

with the different that the former will only emit a row_inserted signal, while the latter will emit row_inserted, row_changed and if the tree store is sorted, rows_reordered. Since emitting the rows_reordered signal repeatedly can affect the performance of the program, gtk_tree_store_insert_with_values() should generally be preferred when inserting rows in a sorted tree store.

Parameters

tree_store

A GtkTreeStore

 

iter

An unset GtkTreeIter to set the new row, or NULL.

[out][allow-none]

parent

A valid GtkTreeIter, or NULL.

[allow-none]

position

position to insert the new row

 

Since: 2.10


gtk_tree_store_insert_with_valuesv ()

void
gtk_tree_store_insert_with_valuesv (GtkTreeStore *tree_store,
                                    GtkTreeIter *iter,
                                    GtkTreeIter *parent,
                                    gint position,
                                    gint *columns,
                                    GValue *values,
                                    gint n_values);

A variant of gtk_tree_store_insert_with_values() which takes the columns and values as two arrays, instead of varargs. This function is mainly intended for language bindings.

Parameters

tree_store

A GtkTreeStore

 

iter

An unset GtkTreeIter to set the new row, or NULL.

[out][allow-none]

parent

A valid GtkTreeIter, or NULL.

[allow-none]

position

position to insert the new row

 

columns

an array of column numbers.

[array length=n_values]

values

an array of GValues.

[array length=n_values]

n_values

the length of the columns and values arrays

 

Since: 2.10


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().

Parameters

tree_store

A GtkTreeStore

 

iter

An unset GtkTreeIter to set to the prepended row.

[out]

parent

A valid GtkTreeIter, or NULL.

[allow-none]

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().

Parameters

tree_store

A GtkTreeStore

 

iter

An unset GtkTreeIter to set to the appended row.

[out]

parent

A valid GtkTreeIter, or NULL.

[allow-none]

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 .

Parameters

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.

Parameters

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

Parameters

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.

Parameters

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.

Parameters

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.

[array]

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.

Parameters

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.

Parameters

tree_store

A GtkTreeStore.

 

iter

A GtkTreeIter.

 

position

A GtkTreeIter or NULL.

[allow-none]

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.

Parameters

tree_store

A GtkTreeStore.

 

iter

A GtkTreeIter.

 

position

A GtkTreeIter.

[allow-none]

Since: 2.2

Types and Values

struct GtkTreeStore

struct GtkTreeStore;

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