Button

Object Hierarchy:

Description:

public class Application : Gtk.Window {
	private int click_counter = 0;

	public Application () {
		// Prepare Gtk.Window:
		this.title = "My Gtk.Button";
		this.window_position = Gtk.WindowPosition.CENTER;
		this.destroy.connect (Gtk.main_quit);
		this.set_default_size (350, 70);

		// The button:
		Gtk.Button button = new Gtk.Button.with_label ("Click me (0)");
		this.add (button);

		button.clicked.connect (() => {
			// Emitted when the button has been activated:
			button.label = "Click me (%d)".printf (++this.click_counter);
		});
	}

	public static int main (string[] args) {
		Gtk.init (ref args);

		Application app = new Application ();
		app.show_all ();
		Gtk.main ();
		return 0;
	}
}

valac --pkg gtk+-3.0 Gtk.Button.vala

Content:

Properties:

• public bool always_show_image { get; set construct; }
  If true, the button will ignore the gtk_button_images setting and always show the image, if available.
• public Widget image { get; set; }
  The child widget to appear next to the button text.
• public PositionType image_position { get; set; }
  The position of the image relative to the text inside the button.
• public string? label { get; set construct; }
• public ReliefStyle relief { get; set; }
• public bool use_stock { get; set construct; }
• public bool use_underline { get; set construct; }
• public float xalign { get; set; }
  If the child of the button is a Misc or Alignment, this property can be used to control its horizontal alignment.
• public float yalign { get; set; }
  If the child of the button is a Misc or Alignment, this property can be used to control its vertical alignment.

Creation methods:

• public Button ()
  Creates a new Button widget.
• public Button.from_icon_name (string? icon_name, IconSize size = BUTTON)
  Creates a new button containing an icon from the current icon theme.
• public Button.from_stock (string stock_id)
  Creates a new Button containing the image and text from a stock item.
• public Button.with_label (string label)
  Creates a Button widget with a Label child containing the given text.
• public Button.with_mnemonic (string label)
  Creates a new Button containing a label.

Methods:

• public void get_alignment (out float xalign, out float yalign)
  Gets the alignment of the child in the button.
• public bool get_always_show_image ()
  Returns whether the button will ignore the gtk_button_images setting and always show the image, if available.
• public unowned Window get_event_window ()
  Returns the button’s event window if it is realized, null otherwise.
• public bool get_focus_on_click ()
  Returns whether the button grabs focus when it is clicked with the mouse.
• public unowned Widget? get_image ()
  Gets the widget that is currenty set as the image of this.
• public PositionType get_image_position ()
  Gets the position of the image relative to the text inside the button.
• public unowned string? get_label ()
  Fetches the text from the label of the button, as set by set_label.
• public ReliefStyle get_relief ()
  Returns the current relief style of the given Button .
• public bool get_use_stock ()
  Returns whether the button label is a stock item.
• public bool get_use_underline ()
  Returns whether an embedded underline in the button label indicates a mnemonic.
• public void set_alignment (float xalign, float yalign)
  Sets the alignment of the child.
• public void set_always_show_image (bool always_show)
  If true, the button will ignore the gtk_button_images setting and always show the image, if available.
• public void set_focus_on_click (bool focus_on_click)
  Sets whether the button will grab focus when it is clicked with the mouse.
• public void set_image (Widget? image)
  Set the image of this to the given widget.
• public void set_image_position (PositionType position)
  Sets the position of the image relative to the text inside the button.
• public void set_label (string? label)
  Sets the text of the label of the button to str.
• public void set_relief (ReliefStyle relief)
  Sets the relief style of the edges of the given Button widget.
• public void set_use_stock (bool use_stock)
  If true, the label set on the button is used as a stock id to select the stock item for the button.
• public void set_use_underline (bool use_underline)
  If true, an underline in the text of the button label indicates the next character should be used for the mnemonic accelerator key.

Signals:

• public virtual signal void activate ()
  The activate signal on GtkButton is an action signal and emitting it causes the button to animate press then release.
• public virtual signal void clicked ()
  Emitted when the button has been activated (pressed and released).
• public virtual signal void enter ()
  Emitted when the pointer enters the button.
• public virtual signal void leave ()
  Emitted when the pointer leaves the button.
• public virtual signal void pressed ()
  Emitted when the button is pressed.
• public virtual signal void released ()
  Emitted when the button is released.

Inherited Members: