## GtkMessageDialog

GtkMessageDialog — A convenient message window

## Synopsis

    #include <gtk/gtk.h>

    struct              GtkMessageDialog;
    enum                GtkMessageType;
    enum                GtkButtonsType;
    GtkWidget *         gtk_message_dialog_new              (GtkWindow *parent,
                                                             GtkDialogFlags flags,
                                                             GtkMessageType type,
                                                             GtkButtonsType buttons,
                                                             const gchar *message_format,
                                                             ...);
    GtkWidget *         gtk_message_dialog_new_with_markup  (GtkWindow *parent,
                                                             GtkDialogFlags flags,
                                                             GtkMessageType type,
                                                             GtkButtonsType buttons,
                                                             const gchar *message_format,
                                                             ...);
    void                gtk_message_dialog_set_markup       (GtkMessageDialog *message_dialog,
                                                             const gchar *str);
    void                gtk_message_dialog_set_image        (GtkMessageDialog *dialog,
                                                             GtkWidget *image);
    GtkWidget *         gtk_message_dialog_get_image        (GtkMessageDialog *dialog);
    void                gtk_message_dialog_format_secondary_text
                                                            (GtkMessageDialog *message_dialog,
                                                             const gchar *message_format,
                                                             ...);
    void                gtk_message_dialog_format_secondary_markup
                                                            (GtkMessageDialog *message_dialog,
                                                             const gchar *message_format,
                                                             ...);
    GtkWidget *         gtk_message_dialog_get_message_area (GtkMessageDialog *message_dialog);

## Object Hierarchy

      GObject
       +----GInitiallyUnowned
             +----GtkWidget
                   +----GtkContainer
                         +----GtkBin
                               +----GtkWindow
                                     +----GtkDialog
                                           +----GtkMessageDialog

## Implemented Interfaces

GtkMessageDialog implements AtkImplementorIface and GtkBuildable.

## Properties

      "buttons"                  GtkButtonsType        : Write / Construct Only
      "image"                    GtkWidget*            : Read / Write
      "message-area"             GtkWidget*            : Read
      "message-type"             GtkMessageType        : Read / Write / Construct
      "secondary-text"           gchar*                : Read / Write
      "secondary-use-markup"     gboolean              : Read / Write
      "text"                     gchar*                : Read / Write
      "use-markup"               gboolean              : Read / Write

## Style Properties

      "message-border"           gint                  : Read

## Description

GtkMessageDialog presents a dialog with an image representing the type of message (Error, Question, etc.) alongside some message text. It's simply a convenience widget; you could construct the equivalent of GtkMessageDialog from GtkDialog without too much effort, but GtkMessageDialog saves typing.

One difference from GtkDialog is that GtkMessageDialog sets the "skip-taskbar-hint" property to `TRUE`, so that the dialog is hidden from the taskbar by default.

The easiest way to do a modal message dialog is to use `gtk_dialog_run()`, though you can also pass in the `GTK_DIALOG_MODAL` flag, `gtk_dialog_run()` automatically makes the dialog modal and waits for the user to respond to it. `gtk_dialog_run()` returns when any dialog button is clicked.

Example 46. A modal dialog.

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    dialog = gtk_message_dialog_new (main_application_window,
                                     GTK_DIALOG_DESTROY_WITH_PARENT,
                                     GTK_MESSAGE_ERROR,
                                     GTK_BUTTONS_CLOSE,
                                     "Error loading file '%s': %s",
                                     filename, g_strerror (errno));
    gtk_dialog_run (GTK_DIALOG (dialog));
    gtk_widget_destroy (dialog);

You might do a non-modal GtkMessageDialog as follows:

Example 47. A non-modal dialog.

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    dialog = gtk_message_dialog_new (main_application_window,
                                     GTK_DIALOG_DESTROY_WITH_PARENT,
                                     GTK_MESSAGE_ERROR,
                                     GTK_BUTTONS_CLOSE,
                                     "Error loading file '%s': %s",
                                     filename, g_strerror (errno));

    /* Destroy the dialog when the user responds to it (e.g. clicks a button) */
    g_signal_connect_swapped (dialog, "response",
                              G_CALLBACK (gtk_widget_destroy),
                              dialog);

### GtkMessageDialog as GtkBuildable

The GtkMessageDialog implementation of the GtkBuildable interface exposes the message area as an internal child with the name "message_area".

## Details

### struct GtkMessageDialog

    struct GtkMessageDialog;

### enum GtkMessageType

    typedef enum {
      GTK_MESSAGE_INFO,
      GTK_MESSAGE_WARNING,
      GTK_MESSAGE_QUESTION,
      GTK_MESSAGE_ERROR,
      GTK_MESSAGE_OTHER
    } GtkMessageType;

The type of message being displayed in the dialog.

`GTK_MESSAGE_INFO` | Informational message
`GTK_MESSAGE_WARNING` | Nonfatal warning message
`GTK_MESSAGE_QUESTION` | Question requiring a choice
`GTK_MESSAGE_ERROR` | Fatal error message
`GTK_MESSAGE_OTHER` | None of the above, doesn't get an icon

### enum GtkButtonsType

    typedef enum {
      GTK_BUTTONS_NONE,
      GTK_BUTTONS_OK,
      GTK_BUTTONS_CLOSE,
      GTK_BUTTONS_CANCEL,
      GTK_BUTTONS_YES_NO,
      GTK_BUTTONS_OK_CANCEL
    } GtkButtonsType;

Prebuilt sets of buttons for the dialog. If none of these choices are appropriate, simply use `GTK_BUTTONS_NONE` then call `gtk_dialog_add_buttons()`.

### Note

Please note that `GTK_BUTTONS_OK`, `GTK_BUTTONS_YES_NO` and `GTK_BUTTONS_OK_CANCEL` are discouraged by the GNOME HIG.

`GTK_BUTTONS_NONE` | no buttons at all
`GTK_BUTTONS_OK` | an OK button
`GTK_BUTTONS_CLOSE` | a Close button
`GTK_BUTTONS_CANCEL` | a Cancel button
`GTK_BUTTONS_YES_NO` | Yes and No buttons
`GTK_BUTTONS_OK_CANCEL` | OK and Cancel buttons

### gtk_message_dialog_new ()

    GtkWidget *         gtk_message_dialog_new              (GtkWindow *parent,
                                                             GtkDialogFlags flags,
                                                             GtkMessageType type,
                                                             GtkButtonsType buttons,
                                                             const gchar *message_format,
                                                             ...);

Creates a new message dialog, which is a simple dialog with an icon indicating the dialog type (error, warning, etc.) and some text the user may want to see. When the user clicks a button a "response" signal is emitted with response IDs from GtkResponseType. See GtkDialog for more details.

`parent` : | transient parent, or `NULL` for none. [allow-none]
`flags` : | flags
`type` : | type of message
`buttons` : | set of buttons to use
`message_format` : | `printf()`-style format string, or `NULL`. [allow-none]
`...` : | arguments for `message_format`
Returns : | a new GtkMessageDialog. [transfer none]

### gtk_message_dialog_new_with_markup ()

    GtkWidget *         gtk_message_dialog_new_with_markup  (GtkWindow *parent,
                                                             GtkDialogFlags flags,
                                                             GtkMessageType type,
                                                             GtkButtonsType buttons,
                                                             const gchar *message_format,
                                                             ...);

Creates a new message dialog, which is a simple dialog with an icon indicating the dialog type (error, warning, etc.) and some text which is marked up with the Pango text markup language. When the user clicks a button a "response" signal is emitted with response IDs from GtkResponseType. See GtkDialog for more details.

Special XML characters in the `printf()` arguments passed to this function will automatically be escaped as necessary. (See `g_markup_printf_escaped()` for how this is implemented.) Usually this is what you want, but if you have an existing Pango markup string that you want to use literally as the label, then you need to use `gtk_message_dialog_set_markup()` instead, since you can't pass the markup string either as the format (it might contain '%' characters) or as a string argument.

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    GtkWidget *dialog;
    dialog = gtk_message_dialog_new (main_application_window,
                                     GTK_DIALOG_DESTROY_WITH_PARENT,
                                     GTK_MESSAGE_ERROR,
                                     GTK_BUTTONS_CLOSE,
                                     NULL);
    gtk_message_dialog_set_markup (GTK_MESSAGE_DIALOG (dialog),
                                   markup);

`parent` : | transient parent, or `NULL` for none. [allow-none]
`flags` : | flags
`type` : | type of message
`buttons` : | set of buttons to use
`message_format` : | `printf()`-style format string, or `NULL`. [allow-none]
`...` : | arguments for `message_format`
Returns : | a new GtkMessageDialog

Since 2.4

### gtk_message_dialog_set_markup ()

    void                gtk_message_dialog_set_markup       (GtkMessageDialog *message_dialog,
                                                             const gchar *str);

Sets the text of the message dialog to be `str`, which is marked up with the Pango text markup language.

`message_dialog` : | a GtkMessageDialog
`str` : | markup string (see Pango markup format)

Since 2.4

### gtk_message_dialog_set_image ()

    void                gtk_message_dialog_set_image        (GtkMessageDialog *dialog,
                                                             GtkWidget *image);

Sets the dialog's image to `image`.

`dialog` : | a GtkMessageDialog
`image` : | the image

Since 2.10

### gtk_message_dialog_get_image ()

    GtkWidget *         gtk_message_dialog_get_image        (GtkMessageDialog *dialog);

Gets the dialog's image.

`dialog` : | a GtkMessageDialog
Returns : | the dialog's image. [transfer none]

Since 2.14

### gtk_message_dialog_format_secondary_text ()

    void                gtk_message_dialog_format_secondary_text
                                                            (GtkMessageDialog *message_dialog,
                                                             const gchar *message_format,
                                                             ...);

Sets the secondary text of the message dialog to be `message_format` (with `printf()`-style).

`message_dialog` : | a GtkMessageDialog
`message_format` : | `printf()`-style format string, or `NULL`. [allow-none]
`...` : | arguments for `message_format`

Since 2.6

### gtk_message_dialog_format_secondary_markup ()

    void                gtk_message_dialog_format_secondary_markup
                                                            (GtkMessageDialog *message_dialog,
                                                             const gchar *message_format,
                                                             ...);

Sets the secondary text of the message dialog to be `message_format` (with `printf()`-style), which is marked up with the Pango text markup language.

Due to an oversight, this function does not escape special XML characters like `gtk_message_dialog_new_with_markup()` does. Thus, if the arguments may contain special XML characters, you should use `g_markup_printf_escaped()` to escape it.

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    gchar *msg;

    msg = g_markup_printf_escaped (message_format, ...);
    gtk_message_dialog_format_secondary_markup (message_dialog, "%s", msg);
    g_free (msg);

`message_dialog` : | a GtkMessageDialog
`message_format` : | printf()-style markup string (see Pango markup format), or `NULL`
`...` : | arguments for `message_format`

Since 2.6

### gtk_message_dialog_get_message_area ()

    GtkWidget *         gtk_message_dialog_get_message_area (GtkMessageDialog *message_dialog);

Returns the message area of the dialog. This is the box where the dialog's primary and secondary labels are packed. You can add your own extra content to that box and it will appear below those labels, on the right side of the dialog's image (or on the left for right-to-left languages). See `gtk_dialog_get_content_area()` for the corresponding function in the parent GtkDialog.

`message_dialog` : | a GtkMessageDialog
Returns : | A GtkVBox corresponding to the "message area" in the `message_dialog`. [transfer none]

Since 2.22

## Property Details

### The `"buttons"` property

      "buttons"                  GtkButtonsType        : Write / Construct Only

The buttons shown in the message dialog.

Default value: GTK_BUTTONS_NONE

### The `"image"` property

      "image"                    GtkWidget*            : Read / Write

The image for this dialog.

Since 2.10

### The `"message-area"` property

      "message-area"             GtkWidget*            : Read

The GtkVBox that corresponds to the message area of this dialog. See `gtk_message_dialog_get_message_area()` for a detailed description of this area.

Since 2.22

### The `"message-type"` property

      "message-type"             GtkMessageType        : Read / Write / Construct

The type of the message. The type is used to determine the image that is shown in the dialog, unless the image is explicitly set by the ::image property.

Default value: GTK_MESSAGE_INFO

### The `"secondary-text"` property

      "secondary-text"           gchar*                : Read / Write

The secondary text of the message dialog.

Default value: NULL

Since 2.10

### The `"secondary-use-markup"` property

      "secondary-use-markup"     gboolean              : Read / Write

`TRUE` if the secondary text of the dialog includes Pango markup. See `pango_parse_markup()`.

Default value: FALSE

Since 2.10

### The `"text"` property

      "text"                     gchar*                : Read / Write

The primary text of the message dialog. If the dialog has a secondary text, this will appear as the title.

Default value: ""

Since 2.10

### The `"use-markup"` property

      "use-markup"               gboolean              : Read / Write

`TRUE` if the primary text of the dialog includes Pango markup. See `pango_parse_markup()`.

Default value: FALSE

Since 2.10

## Style Property Details

### The `"message-border"` style property

      "message-border"           gint                  : Read

Width of border around the label and image in the message dialog.

Allowed values: >= 0

Default value: 12

## See Also

GtkDialog