GtkAssistant

GtkAssistant as GtkBuildable

The GtkAssistant implementation of the GtkBuildable interface exposes the action_area as internal children with the name “action_area”.

To add pages to an assistant in GtkBuilder, simply add it as a child to the GtkAssistant object, and set its child properties as necessary.

CSS nodes

GtkAssistant has a single CSS node with the name assistant.

gtk_assistant_new ()

GtkWidget *
gtk_assistant_new (void);

Creates a new GtkAssistant.

Since: 2.10

gtk_assistant_get_current_page ()

gint
gtk_assistant_get_current_page (GtkAssistant *assistant);

Returns the page number of the current page.

Since: 2.10

gtk_assistant_set_current_page ()

void
gtk_assistant_set_current_page (GtkAssistant *assistant,
                                gint page_num);

Switches the page to page_num .

Note that this will only be necessary in custom buttons, as the assistant flow can be set with gtk_assistant_set_forward_page_func().

Since: 2.10

gtk_assistant_get_n_pages ()

gint
gtk_assistant_get_n_pages (GtkAssistant *assistant);

Returns the number of pages in the assistant

Since: 2.10

gtk_assistant_get_nth_page ()

GtkWidget *
gtk_assistant_get_nth_page (GtkAssistant *assistant,
                            gint page_num);

Returns the child widget contained in page number page_num .

Since: 2.10

gtk_assistant_prepend_page ()

gint
gtk_assistant_prepend_page (GtkAssistant *assistant,
                            GtkWidget *page);

Prepends a page to the assistant .

Since: 2.10

gtk_assistant_append_page ()

gint
gtk_assistant_append_page (GtkAssistant *assistant,
                           GtkWidget *page);

Appends a page to the assistant .

Since: 2.10

gtk_assistant_insert_page ()

gint
gtk_assistant_insert_page (GtkAssistant *assistant,
                           GtkWidget *page,
                           gint position);

Inserts a page in the assistant at a given position.

Since: 2.10

gtk_assistant_remove_page ()

void
gtk_assistant_remove_page (GtkAssistant *assistant,
                           gint page_num);

Removes the page_num ’s page from assistant .

Since: 3.2

GtkAssistantPageFunc ()

gint
(*GtkAssistantPageFunc) (gint current_page,
                         gpointer data);

A function used by gtk_assistant_set_forward_page_func() to know which is the next page given a current one. It’s called both for computing the next page when the user presses the “forward” button and for handling the behavior of the “last” button.

gtk_assistant_set_forward_page_func ()

void
gtk_assistant_set_forward_page_func (GtkAssistant *assistant,
                                     GtkAssistantPageFunc page_func,
                                     gpointer data,
                                     GDestroyNotify destroy);

Sets the page forwarding function to be page_func .

This function will be used to determine what will be the next page when the user presses the forward button. Setting page_func to NULL will make the assistant to use the default forward function, which just goes to the next visible page.

Since: 2.10

gtk_assistant_set_page_type ()

void
gtk_assistant_set_page_type (GtkAssistant *assistant,
                             GtkWidget *page,
                             GtkAssistantPageType type);

Sets the page type for page .

The page type determines the page behavior in the assistant .

Since: 2.10

gtk_assistant_get_page_type ()

GtkAssistantPageType
gtk_assistant_get_page_type (GtkAssistant *assistant,
                             GtkWidget *page);

Gets the page type of page .

Since: 2.10

gtk_assistant_set_page_title ()

void
gtk_assistant_set_page_title (GtkAssistant *assistant,
                              GtkWidget *page,
                              const gchar *title);

Sets a title for page .

The title is displayed in the header area of the assistant when page is the current page.

Since: 2.10

gtk_assistant_get_page_title ()

const gchar *
gtk_assistant_get_page_title (GtkAssistant *assistant,
                              GtkWidget *page);

Gets the title for page .

Since: 2.10

gtk_assistant_set_page_header_image ()

void
gtk_assistant_set_page_header_image (GtkAssistant *assistant,
                                     GtkWidget *page,
                                     GdkPixbuf *pixbuf);

Sets a header image for page .

Since: 2.10

gtk_assistant_get_page_header_image ()

GdkPixbuf *
gtk_assistant_get_page_header_image (GtkAssistant *assistant,
                                     GtkWidget *page);

Gets the header image for page .

Since: 2.10

gtk_assistant_set_page_side_image ()

void
gtk_assistant_set_page_side_image (GtkAssistant *assistant,
                                   GtkWidget *page,
                                   GdkPixbuf *pixbuf);

Sets a side image for page .

This image used to be displayed in the side area of the assistant when page is the current page.

Since: 2.10

gtk_assistant_get_page_side_image ()

GdkPixbuf *
gtk_assistant_get_page_side_image (GtkAssistant *assistant,
                                   GtkWidget *page);

Gets the side image for page .

Since: 2.10

gtk_assistant_set_page_complete ()

void
gtk_assistant_set_page_complete (GtkAssistant *assistant,
                                 GtkWidget *page,
                                 gboolean complete);

Sets whether page contents are complete.

This will make assistant update the buttons state to be able to continue the task.

Since: 2.10

gtk_assistant_get_page_complete ()

gboolean
gtk_assistant_get_page_complete (GtkAssistant *assistant,
                                 GtkWidget *page);

Gets whether page is complete.

Since: 2.10

gtk_assistant_set_page_has_padding ()

void
gtk_assistant_set_page_has_padding (GtkAssistant *assistant,
                                    GtkWidget *page,
                                    gboolean has_padding);

Sets whether the assistant is adding padding around the page.

Since: 3.18

gtk_assistant_get_page_has_padding ()

gboolean
gtk_assistant_get_page_has_padding (GtkAssistant *assistant,
                                    GtkWidget *page);

Gets whether page has padding.

Since: 3.18

gtk_assistant_add_action_widget ()

void
gtk_assistant_add_action_widget (GtkAssistant *assistant,
                                 GtkWidget *child);

Adds a widget to the action area of a GtkAssistant.

Since: 2.10

gtk_assistant_remove_action_widget ()

void
gtk_assistant_remove_action_widget (GtkAssistant *assistant,
                                    GtkWidget *child);

Removes a widget from the action area of a GtkAssistant.

Since: 2.10

gtk_assistant_update_buttons_state ()

void
gtk_assistant_update_buttons_state (GtkAssistant *assistant);

Forces assistant to recompute the buttons state.

GTK+ automatically takes care of this in most situations, e.g. when the user goes to a different page, or when the visibility or completeness of a page changes.

One situation where it can be necessary to call this function is when changing a value on the current page affects the future page flow of the assistant.

Since: 2.10

gtk_assistant_commit ()

void
gtk_assistant_commit (GtkAssistant *assistant);

Erases the visited page history so the back button is not shown on the current page, and removes the cancel button from subsequent pages.

Use this when the information provided up to the current page is hereafter deemed permanent and cannot be modified or undone. For example, showing a progress page to track a long-running, unreversible operation after the user has clicked apply on a confirmation page.

Since: 2.22

gtk_assistant_next_page ()

void
gtk_assistant_next_page (GtkAssistant *assistant);

Navigate to the next page.

It is a programming error to call this function when there is no next page.

This function is for use when creating pages of the GTK_ASSISTANT_PAGE_CUSTOM type.

Since: 3.0

gtk_assistant_previous_page ()

void
gtk_assistant_previous_page (GtkAssistant *assistant);

Navigate to the previous visited page.

It is a programming error to call this function when no previous page is available.

This function is for use when creating pages of the GTK_ASSISTANT_PAGE_CUSTOM type.

Since: 3.0

struct GtkAssistant

struct GtkAssistant;

struct GtkAssistantClass

struct GtkAssistantClass {
  GtkWindowClass parent_class;

  void (* prepare) (GtkAssistant *assistant, GtkWidget *page);
  void (* apply)   (GtkAssistant *assistant);
  void (* close)   (GtkAssistant *assistant);
  void (* cancel)  (GtkAssistant *assistant);
};

enum GtkAssistantPageType

An enum for determining the page role inside the GtkAssistant. It's used to handle buttons sensitivity and visibility.

Note that an assistant needs to end its page flow with a page of type GTK_ASSISTANT_PAGE_CONFIRM, GTK_ASSISTANT_PAGE_SUMMARY or GTK_ASSISTANT_PAGE_PROGRESS to be correct.

The Cancel button will only be shown if the page isn’t “committed”. See gtk_assistant_commit() for details.

The “use-header-bar” property

  “use-header-bar”           int

TRUE if the assistant uses a GtkHeaderBar for action buttons instead of the action-area.

For technical reasons, this property is declared as an integer property, but you should only set it to TRUE or FALSE.

Owner: GtkAssistant

Flags: Read / Write / Construct Only

Allowed values: [-1,1]

Default value: -1

Since: 3.12

The “complete” child property

  “complete”                 gboolean

Setting the "complete" child property to TRUE marks a page as complete (i.e.: all the required fields are filled out). GTK+ uses this information to control the sensitivity of the navigation buttons.

Owner: GtkAssistant

Flags: Read / Write

Default value: FALSE

Since: 2.10

The “has-padding” child property

  “has-padding”              gboolean

Whether the assistant adds padding around the page.

Owner: GtkAssistant

Flags: Read / Write

Default value: TRUE

The “header-image” child property

  “header-image”             GdkPixbuf *

This image used to be displayed in the page header.

Owner: GtkAssistant

Flags: Read / Write

Since: 2.10

The “page-type” child property

  “page-type”                GtkAssistantPageType

The type of the assistant page.

Owner: GtkAssistant

Flags: Read / Write

Default value: GTK_ASSISTANT_PAGE_CONTENT

Since: 2.10

The “sidebar-image” child property

  “sidebar-image”            GdkPixbuf *

This image used to be displayed in the 'sidebar'.

Owner: GtkAssistant

Flags: Read / Write

Since: 2.10

The “title” child property

  “title”                    char *

The title of the page.

Owner: GtkAssistant

Flags: Read / Write

Default value: NULL

Since: 2.10

The “content-padding” style property

  “content-padding”          int

Number of pixels around the content.

Owner: GtkAssistant

Flags: Read

Allowed values: >= 0

Default value: 1

The “header-padding” style property

  “header-padding”           int

Number of pixels around the header.

Owner: GtkAssistant

Flags: Read

Allowed values: >= 0

Default value: 6

The “apply” signal

void
user_function (GtkAssistant *assistant,
               gpointer      user_data)

The ::apply signal is emitted when the apply button is clicked.

The default behavior of the GtkAssistant is to switch to the page after the current page, unless the current page is the last one.

A handler for the ::apply signal should carry out the actions for which the wizard has collected data. If the action takes a long time to complete, you might consider putting a page of type GTK_ASSISTANT_PAGE_PROGRESS after the confirmation page and handle this operation within the “prepare” signal of the progress page.

Flags: Run Last

Since: 2.10

The “cancel” signal

void
user_function (GtkAssistant *assistant,
               gpointer      user_data)

The ::cancel signal is emitted when then the cancel button is clicked.

Flags: Run Last

Since: 2.10

The “close” signal

void
user_function (GtkAssistant *assistant,
               gpointer      user_data)

The ::close signal is emitted either when the close button of a summary page is clicked, or when the apply button in the last page in the flow (of type GTK_ASSISTANT_PAGE_CONFIRM) is clicked.

Flags: Run Last

Since: 2.10

The “escape” signal

void
user_function (GtkAssistant *assistant,
               gpointer      user_data)

Flags: Action

The “prepare” signal

void
user_function (GtkAssistant *assistant,
               GtkWidget    *page,
               gpointer      user_data)

The ::prepare signal is emitted when a new page is set as the assistant's current page, before making the new page visible.

A handler for this signal can do any preparations which are necessary before showing page .

Flags: Run Last

Since: 2.10