GtkDialog

GtkDialog — Create popup windows

Properties

gint use-header-bar Read / Write / Construct Only

Signals

void close Action
void response Run Last

Types and Values

Object Hierarchy

    GObject
    ╰── GInitiallyUnowned
        ╰── GtkWidget
            ╰── GtkWindow
                ╰── GtkDialog
                    ├── GtkAboutDialog
                    ├── GtkAppChooserDialog
                    ├── GtkColorChooserDialog
                    ├── GtkFileChooserDialog
                    ├── GtkFontChooserDialog
                    ├── GtkMessageDialog
                    ├── GtkPageSetupUnixDialog
                    ╰── GtkPrintUnixDialog

Implemented Interfaces

GtkDialog implements AtkImplementorIface, GtkBuildable, GtkConstraintTarget, GtkNative, GtkShortcutManager and GtkRoot.

Includes

#include <gtk/gtk.h>

Description

Dialog boxes are a convenient way to prompt the user for a small amount of input, e.g. to display a message, ask a question, or anything else that does not require extensive effort on the user’s part.

GTK+ treats a dialog as a window split vertically. The top section is a GtkBox, and is where widgets such as a GtkLabel or a GtkEntry should be packed. The bottom area is known as the “action area”. This is generally used for packing buttons into the dialog which may perform functions such as cancel, ok, or apply.

GtkDialog boxes are created with a call to gtk_dialog_new() or gtk_dialog_new_with_buttons(). gtk_dialog_new_with_buttons() is recommended; it allows you to set the dialog title, some convenient flags, and add simple buttons.

A “modal” dialog (that is, one which freezes the rest of the application from user input), can be created by calling gtk_window_set_modal() on the dialog. Use the GTK_WINDOW() macro to cast the widget returned from gtk_dialog_new() into a GtkWindow. When using gtk_dialog_new_with_buttons() you can also pass the GTK_DIALOG_MODAL flag to make a dialog modal.

If you add buttons to GtkDialog using gtk_dialog_new_with_buttons(), gtk_dialog_add_button(), gtk_dialog_add_buttons(), or gtk_dialog_add_action_widget(), clicking the button will emit a signal called “response” with a response ID that you specified. GTK+ will never assign a meaning to positive response IDs; these are entirely user-defined. But for convenience, you can use the response IDs in the GtkResponseType enumeration (these all have values less than zero). If a dialog receives a delete event, the “response” signal will be emitted with a response ID of GTK_RESPONSE_DELETE_EVENT.

For the simple dialog in the following example, in reality you’d probably use GtkMessageDialog to save yourself some effort. But you’d need to create the dialog contents manually if you had more than a simple message in the dialog.

An example for simple GtkDialog usage:

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// Function to open a dialog box with a message
void
quick_message (GtkWindow *parent, gchar *message)
{
 GtkWidget *dialog, *label, *content_area;
 GtkDialogFlags flags;

 // Create the widgets
 flags = GTK_DIALOG_DESTROY_WITH_PARENT;
 dialog = gtk_dialog_new_with_buttons ("Message",
                                       parent,
                                       flags,
                                       _("_OK"),
                                       GTK_RESPONSE_NONE,
                                       NULL);
 content_area = gtk_dialog_get_content_area (GTK_DIALOG (dialog));
 label = gtk_label_new (message);

 // Ensure that the dialog box is destroyed when the user responds

 g_signal_connect_swapped (dialog,
                           "response",
                           G_CALLBACK (gtk_window_destroy),
                           dialog);

 // Add the label, and show everything we’ve added

 gtk_box_append (GTK_BOX (content_area), label);
 gtk_widget_show (dialog);
}

GtkDialog as GtkBuildable

The GtkDialog implementation of the GtkBuildable interface exposes the content_area and action_area as internal children with the names “content_area” and “action_area”.

GtkDialog supports a custom <action-widgets> element, which can contain multiple <action-widget> elements. The “response” attribute specifies a numeric response, and the content of the element is the id of widget (which should be a child of the dialogs action_area ). To mark a response as default, set the “default“ attribute of the <action-widget> element to true.

GtkDialog supports adding action widgets by specifying “action“ as the “type“ attribute of a <child> element. The widget will be added either to the action area or the headerbar of the dialog, depending on the “use-header-bar“ property. The response id has to be associated with the action widget using the <action-widgets> element.

An example of a GtkDialog UI definition fragment:

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<object class="GtkDialog" id="dialog1">
  <child type="action">
    <object class="GtkButton" id="button_cancel"/>
  </child>
  <child type="action">
    <object class="GtkButton" id="button_ok">
    </object>
  </child>
  <action-widgets>
    <action-widget response="cancel">button_cancel</action-widget>
    <action-widget response="ok" default="true">button_ok</action-widget>
  </action-widgets>
</object>

Functions

gtk_dialog_new ()

GtkWidget *
gtk_dialog_new (void);

Creates a new dialog box.

Widgets should not be packed into this GtkWindow directly, but into the content_area and action_area , as described above.

Returns

the new dialog as a GtkWidget


gtk_dialog_new_with_buttons ()

GtkWidget *
gtk_dialog_new_with_buttons (const gchar *title,
                             GtkWindow *parent,
                             GtkDialogFlags flags,
                             const gchar *first_button_text,
                             ...);

Creates a new GtkDialog with title title (or NULL for the default title; see gtk_window_set_title()) and transient parent parent (or NULL for none; see gtk_window_set_transient_for()). The flags argument can be used to make the dialog modal (GTK_DIALOG_MODAL) and/or to have it destroyed along with its transient parent (GTK_DIALOG_DESTROY_WITH_PARENT). After flags , button text/response ID pairs should be listed, with a NULL pointer ending the list. Button text can be arbitrary text. A response ID can be any positive number, or one of the values in the GtkResponseType enumeration. If the user clicks one of these dialog buttons, GtkDialog will emit the “response” signal with the corresponding response ID. If a GtkDialog receives a delete event, it will emit ::response with a response ID of GTK_RESPONSE_DELETE_EVENT. However, destroying a dialog does not emit the ::response signal; so be careful relying on ::response when using the GTK_DIALOG_DESTROY_WITH_PARENT flag. Buttons are from left to right, so the first button in the list will be the leftmost button in the dialog.

Here’s a simple example:

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GtkWidget *main_app_window; // Window the dialog should show up on
GtkWidget *dialog;
GtkDialogFlags flags = GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT;
dialog = gtk_dialog_new_with_buttons ("My dialog",
                                      main_app_window,
                                      flags,
                                      _("_OK"),
                                      GTK_RESPONSE_ACCEPT,
                                      _("_Cancel"),
                                      GTK_RESPONSE_REJECT,
                                      NULL);

Parameters

title

Title of the dialog, or NULL.

[allow-none]

parent

Transient parent of the dialog, or NULL.

[allow-none]

flags

from GtkDialogFlags

 

first_button_text

text to go in first button, or NULL.

[allow-none]

...

response ID for first button, then additional buttons, ending with NULL

 

Returns

a new GtkDialog


gtk_dialog_response ()

void
gtk_dialog_response (GtkDialog *dialog,
                     gint response_id);

Emits the “response” signal with the given response ID.

Used to indicate that the user has responded to the dialog in some way.

Parameters

dialog

a GtkDialog

 

response_id

response ID

 

gtk_dialog_add_button ()

GtkWidget *
gtk_dialog_add_button (GtkDialog *dialog,
                       const gchar *button_text,
                       gint response_id);

Adds a button with the given text and sets things up so that clicking the button will emit the “response” signal with the given response_id . The button is appended to the end of the dialog’s action area. The button widget is returned, but usually you don’t need it.

Parameters

dialog

a GtkDialog

 

button_text

text of button

 

response_id

response ID for the button

 

Returns

the GtkButton widget that was added.

[transfer none]


gtk_dialog_add_buttons ()

void
gtk_dialog_add_buttons (GtkDialog *dialog,
                        const gchar *first_button_text,
                        ...);

Adds more buttons, same as calling gtk_dialog_add_button() repeatedly. The variable argument list should be NULL-terminated as with gtk_dialog_new_with_buttons(). Each button must have both text and response ID.

Parameters

dialog

a GtkDialog

 

first_button_text

button text

 

...

response ID for first button, then more text-response_id pairs

 

gtk_dialog_add_action_widget ()

void
gtk_dialog_add_action_widget (GtkDialog *dialog,
                              GtkWidget *child,
                              gint response_id);

Adds an activatable widget to the action area of a GtkDialog, connecting a signal handler that will emit the “response” signal on the dialog when the widget is activated. The widget is appended to the end of the dialog’s action area. If you want to add a non-activatable widget, simply pack it into the action_area field of the GtkDialog struct.

Parameters

dialog

a GtkDialog

 

child

an activatable widget

 

response_id

response ID for child

 

gtk_dialog_set_default_response ()

void
gtk_dialog_set_default_response (GtkDialog *dialog,
                                 gint response_id);

Sets the last widget in the dialog’s action area with the given response_id as the default widget for the dialog. Pressing “Enter” normally activates the default widget.

Parameters

dialog

a GtkDialog

 

response_id

a response ID

 

gtk_dialog_set_response_sensitive ()

void
gtk_dialog_set_response_sensitive (GtkDialog *dialog,
                                   gint response_id,
                                   gboolean setting);

Calls gtk_widget_set_sensitive (widget, @setting) for each widget in the dialog’s action area with the given response_id . A convenient way to sensitize/desensitize dialog buttons.

Parameters

dialog

a GtkDialog

 

response_id

a response ID

 

setting

TRUE for sensitive

 

gtk_dialog_get_response_for_widget ()

gint
gtk_dialog_get_response_for_widget (GtkDialog *dialog,
                                    GtkWidget *widget);

Gets the response id of a widget in the action area of a dialog.

Parameters

dialog

a GtkDialog

 

widget

a widget in the action area of dialog

 

Returns

the response id of widget , or GTK_RESPONSE_NONE if widget doesn’t have a response id set.


gtk_dialog_get_widget_for_response ()

GtkWidget *
gtk_dialog_get_widget_for_response (GtkDialog *dialog,
                                    gint response_id);

Gets the widget button that uses the given response ID in the action area of a dialog.

Parameters

dialog

a GtkDialog

 

response_id

the response ID used by the dialog widget

 

Returns

the widget button that uses the given response_id , or NULL.

[nullable][transfer none]


gtk_dialog_get_content_area ()

GtkWidget *
gtk_dialog_get_content_area (GtkDialog *dialog);

Returns the content area of dialog .

Parameters

dialog

a GtkDialog

 

Returns

the content area GtkBox.

[type Gtk.Box][transfer none]


gtk_dialog_get_header_bar ()

GtkWidget *
gtk_dialog_get_header_bar (GtkDialog *dialog);

Returns the header bar of dialog . Note that the headerbar is only used by the dialog if the “use-header-bar” property is TRUE.

Parameters

dialog

a GtkDialog

 

Returns

the header bar.

[type Gtk.HeaderBar][transfer none]

Types and Values

struct GtkDialog

struct GtkDialog;

The GtkDialog contains only private fields and should not be directly accessed.


struct GtkDialogClass

struct GtkDialogClass {
  GtkWindowClass parent_class;

  void (* response) (GtkDialog *dialog, gint response_id);

  /* Keybinding signals */

  void (* close)    (GtkDialog *dialog);
};

Members

response ()

Signal emitted when an action widget is activated.

 

close ()

Signal emitted when the user uses a keybinding to close the dialog.

 

enum GtkDialogFlags

Flags used to influence dialog construction.

Members

GTK_DIALOG_MODAL

Make the constructed dialog modal, see gtk_window_set_modal()

 

GTK_DIALOG_DESTROY_WITH_PARENT

Destroy the dialog when its parent is destroyed, see gtk_window_set_destroy_with_parent()

 

GTK_DIALOG_USE_HEADER_BAR

Create dialog with actions in header bar instead of action area

 

enum GtkResponseType

Predefined values for use as response ids in gtk_dialog_add_button(). All predefined values are negative; GTK+ leaves values of 0 or greater for application-defined response ids.

Members

GTK_RESPONSE_NONE

Returned if an action widget has no response id, or if the dialog gets programmatically hidden or destroyed

 

GTK_RESPONSE_REJECT

Generic response id, not used by GTK+ dialogs

 

GTK_RESPONSE_ACCEPT

Generic response id, not used by GTK+ dialogs

 

GTK_RESPONSE_DELETE_EVENT

Returned if the dialog is deleted

 

GTK_RESPONSE_OK

Returned by OK buttons in GTK+ dialogs

 

GTK_RESPONSE_CANCEL

Returned by Cancel buttons in GTK+ dialogs

 

GTK_RESPONSE_CLOSE

Returned by Close buttons in GTK+ dialogs

 

GTK_RESPONSE_YES

Returned by Yes buttons in GTK+ dialogs

 

GTK_RESPONSE_NO

Returned by No buttons in GTK+ dialogs

 

GTK_RESPONSE_APPLY

Returned by Apply buttons in GTK+ dialogs

 

GTK_RESPONSE_HELP

Returned by Help buttons in GTK+ dialogs

 

Property Details

The “use-header-bar” property

  “use-header-bar”           gint

TRUE if the dialog 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: GtkDialog

Flags: Read / Write / Construct Only

Allowed values: [-1,1]

Default value: -1

Signal Details

The “close” signal

void
user_function (GtkDialog *dialog,
               gpointer   user_data)

The ::close signal is a keybinding signal which gets emitted when the user uses a keybinding to close the dialog.

The default binding for this signal is the Escape key.

Parameters

user_data

user data set when the signal handler was connected.

 

Flags: Action


The “response” signal

void
user_function (GtkDialog *dialog,
               gint       response_id,
               gpointer   user_data)

Emitted when an action widget is clicked, the dialog receives a delete event, or the application programmer calls gtk_dialog_response(). On a delete event, the response ID is GTK_RESPONSE_DELETE_EVENT. Otherwise, it depends on which action widget was clicked.

Parameters

dialog

the object on which the signal is emitted

 

response_id

the response ID

 

user_data

user data set when the signal handler was connected.

 

Flags: Run Last