MessageDialog

open class MessageDialog : Dialog, MessageDialogProtocol

GtkMessageDialog presents a dialog with some message text.

An example GtkMessageDialog

It’s simply a convenience widget; you could construct the equivalent of GtkMessageDialog from GtkDialog without too much effort, but GtkMessageDialog saves typing.

The easiest way to do a modal message dialog is to use the GTK_DIALOG_MODAL flag, which will call [methodGtk.Window.set_modal] internally. The dialog will prevent interaction with the parent window until it’s hidden or destroyed. You can use the [signalGtk.Dialog::response] signal to know when the user dismissed the dialog.

An example for using a modal dialog:

GtkDialogFlags flags = GTK_DIALOG_DESTROY_WITH_PARENT | GTK_DIALOG_MODAL;
dialog = gtk_message_dialog_new (parent_window,
                                 flags,
                                 GTK_MESSAGE_ERROR,
                                 GTK_BUTTONS_CLOSE,
                                 "Error reading “`s`”: `s`",
                                 filename,
                                 g_strerror (errno));
// Destroy the dialog when the user responds to it
// (e.g. clicks a button)

g_signal_connect (dialog, "response",
                  G_CALLBACK (gtk_window_destroy),
                  NULL);

You might do a non-modal GtkMessageDialog simply by omitting the GTK_DIALOG_MODAL flag:

GtkDialogFlags flags = GTK_DIALOG_DESTROY_WITH_PARENT;
dialog = gtk_message_dialog_new (parent_window,
                                 flags,
                                 GTK_MESSAGE_ERROR,
                                 GTK_BUTTONS_CLOSE,
                                 "Error reading “`s`”: `s`",
                                 filename,
                                 g_strerror (errno));

// Destroy the dialog when the user responds to it
// (e.g. clicks a button)
g_signal_connect (dialog, "response",
                  G_CALLBACK (gtk_window_destroy),
                  NULL);

GtkMessageDialog as GtkBuildable

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

The MessageDialog type acts as a reference-counted owner of an underlying GtkMessageDialog instance. It provides the methods that can operate on this data type through MessageDialogProtocol conformance. Use MessageDialog as a strong reference or owner of a GtkMessageDialog instance.

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  • Designated initialiser from the underlying `C` data type.

    This creates an instance without performing an unbalanced retain i.e., ownership is transferred to the MessageDialog instance.

    Declaration

    Swift

    @inlinable
public init(_ op: UnsafeMutablePointer<GtkMessageDialog>)

    Parameters

    op

    pointer to the underlying object
    Show on GitHub

  • Designated initialiser from a constant pointer to the underlying C data type. This creates an instance without performing an unbalanced retain i.e., ownership is transferred to the MessageDialog instance.

    Declaration

    Swift

    @inlinable
public init(_ op: UnsafePointer<GtkMessageDialog>)

    Parameters

    op

    pointer to the underlying object
    Show on GitHub

  • Optional initialiser from a non-mutating gpointer to the underlying C data type. This creates an instance without performing an unbalanced retain i.e., ownership is transferred to the MessageDialog instance.

    Declaration

    Swift

    @inlinable
override public init!(gpointer op: gpointer?)

    Parameters

    op

    gpointer to the underlying object
    Show on GitHub

  • Optional initialiser from a non-mutating gconstpointer to the underlying C data type. This creates an instance without performing an unbalanced retain i.e., ownership is transferred to the MessageDialog instance.

    Declaration

    Swift

    @inlinable
override public init!(gconstpointer op: gconstpointer?)

    Parameters

    op

    pointer to the underlying object
    Show on GitHub

  • Optional initialiser from a constant pointer to the underlying C data type. This creates an instance without performing an unbalanced retain i.e., ownership is transferred to the MessageDialog instance.

    Declaration

    Swift

    @inlinable
public init!(_ op: UnsafePointer<GtkMessageDialog>?)

    Parameters

    op

    pointer to the underlying object
    Show on GitHub

  • Optional initialiser from the underlying C data type. This creates an instance without performing an unbalanced retain i.e., ownership is transferred to the MessageDialog instance.

    Declaration

    Swift

    @inlinable
public init!(_ op: UnsafeMutablePointer<GtkMessageDialog>?)

    Parameters

    op

    pointer to the underlying object
    Show on GitHub

  • Designated initialiser from the underlying C data type. Will retain GtkMessageDialog. i.e., ownership is transferred to the MessageDialog instance.

    Declaration

    Swift

    @inlinable
public init(retaining op: UnsafeMutablePointer<GtkMessageDialog>)

    Parameters

    op

    pointer to the underlying object
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  • Reference intialiser for a related type that implements MessageDialogProtocol Will retain GtkMessageDialog.

    Declaration

    Swift

    @inlinable
public init<T>(messageDialog other: T) where T : MessageDialogProtocol

    Parameters

    other

    an instance of a related type that implements MessageDialogProtocol
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  • Unsafe typed initialiser. Do not use unless you know the underlying data type the pointer points to conforms to MessageDialogProtocol.

    Declaration

    Swift

    @inlinable
override public init<T>(cPointer p: UnsafeMutablePointer<T>)

    Parameters

    cPointer

    pointer to the underlying object
    Show on GitHub

  • Unsafe typed, retaining initialiser. Do not use unless you know the underlying data type the pointer points to conforms to MessageDialogProtocol.

    Declaration

    Swift

    @inlinable
override public init<T>(retainingCPointer cPointer: UnsafeMutablePointer<T>)

    Parameters

    cPointer

    pointer to the underlying object
    Show on GitHub

  • Unsafe untyped initialiser. Do not use unless you know the underlying data type the pointer points to conforms to MessageDialogProtocol.

    Declaration

    Swift

    @inlinable
override public init(raw p: UnsafeRawPointer)

    Parameters

    p

    raw pointer to the underlying object
    Show on GitHub

  • Unsafe untyped, retaining initialiser. Do not use unless you know the underlying data type the pointer points to conforms to MessageDialogProtocol.

    Declaration

    Swift

    @inlinable
override public init(retainingRaw raw: UnsafeRawPointer)
    Show on GitHub

  • Unsafe untyped initialiser. Do not use unless you know the underlying data type the pointer points to conforms to MessageDialogProtocol.

    Declaration

    Swift

    @inlinable
public required init(raw p: UnsafeMutableRawPointer)

    Parameters

    p

    mutable raw pointer to the underlying object
    Show on GitHub

  • Unsafe untyped, retaining initialiser. Do not use unless you know the underlying data type the pointer points to conforms to MessageDialogProtocol.

    Declaration

    Swift

    @inlinable
required public init(retainingRaw raw: UnsafeMutableRawPointer)

    Parameters

    raw

    mutable raw pointer to the underlying object
    Show on GitHub

  • Unsafe untyped initialiser. Do not use unless you know the underlying data type the pointer points to conforms to MessageDialogProtocol.

    Declaration

    Swift

    @inlinable
override public init(opaquePointer p: OpaquePointer)

    Parameters

    p

    opaque pointer to the underlying object
    Show on GitHub

  • Unsafe untyped, retaining initialiser. Do not use unless you know the underlying data type the pointer points to conforms to MessageDialogProtocol.

    Declaration

    Swift

    @inlinable
override public init(retainingOpaquePointer p: OpaquePointer)

    Parameters

    p

    opaque pointer to the underlying object
    Show on GitHub

  • Creates a new message dialog, which is a simple dialog with some text the user may want to see. When the user clicks a button a “response” signal is emitted with response IDs from GtkResponseType corresponding to the buttons. See Dialog for more details.

    Declaration

    Swift

    @inlinable
convenience init(flags: DialogFlags = .modal, type: MessageType = .info, buttons: ButtonsType = .ok, text: String, secondaryText: String? = nil)

    Parameters

    title

    Title of the dialog
    flags

    flags to use such as .modal (default) or .destroy_with_parent
    type

    dialog type such as .info, .warning, .error, etc.
    buttons

    buttons to display, e.g. .ok_cancel, .yes_no, .ok
    text

    text to display in the dialog box
    secondaryText

    optional secondary text to display
    Show on GitHub

  • Creates a new message dialog, which is a simple dialog with some text the user may want to see. When the user clicks a button a “response” signal is emitted with response IDs from GtkResponseType corresponding to the buttons. See Dialog for more details.

    Declaration

    Swift

    @inlinable
convenience init<W>(parent: W, flags: DialogFlags = .modal, type: MessageType = .info, buttons: ButtonsType = .ok, text: String, secondaryText: String? = nil) where W : WindowProtocol

    Parameters

    parent

    parent window
    flags

    flags to use such as .modal (default) or .destroy_with_parent
    type

    dialog type such as .info, .warning, .error, etc.
    buttons

    buttons to display, e.g. .ok_cancel, .yes_no, .ok
    text

    text to display in the dialog box
    secondaryText

    optional secondary text to display
    Show on GitHub

  • Creates a new message dialog, which is a simple dialog with some markup the user may want to see. When the user clicks a button a “response” signal is emitted with response IDs from GtkResponseType corresponding to the buttons. See Dialog for more details.

    Declaration

    Swift

    @inlinable
convenience init(flags: DialogFlags = .modal, type: MessageType = .info, buttons: ButtonsType = .ok, markup: String, secondaryMarkup: String? = nil)

    Parameters

    title

    Title of the dialog
    flags

    flags to use such as .modal (default) or .destroy_with_parent
    type

    dialog type such as .info, .warning, .error, etc.
    buttons

    buttons to display, e.g. .ok_cancel, .yes_no, .ok
    markup

    markup text to display in the dialog box
    secondaryMarkup

    optional secondary markup to display
    Show on GitHub

  • Creates a new message dialog, which is a simple dialog with some text the user may want to see. When the user clicks a button a “response” signal is emitted with response IDs from GtkResponseType corresponding to the buttons. See Dialog for more details.

    Declaration

    Swift

    @inlinable
convenience init<W>(parent: W, flags: DialogFlags = .modal, type: MessageType = .info, buttons: ButtonsType = .ok, markup: String, secondaryMarkup: String? = nil) where W : WindowProtocol

    Parameters

    title

    Title of the dialog
    parent

    parent window
    flags

    flags to use such as .modal (default) or .destroy_with_parent
    type

    dialog type such as .info, .warning, .error, etc.
    buttons

    buttons to display, e.g. .ok_cancel, .yes_no, .ok
    markup

    markup text to display in the dialog box
    secondaryMarkup

    optional secondary text to display
    Show on GitHub