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# Package Gtk.Gamma`_`Curve

The Gtk_Gamma_Curve widget is a child of Gtk_Curve specifically for editing gamma curves, which are used in graphics applications such as the Gimp.

The Gamma_Curve widget shows a curve which the user can edit with the mouse just like a Gtk_Curve widget. On the right of the curve it also displays 5 buttons, 3 of which change between the 3 curve modes (spline, linear and free), and the other 2 set the curve to a particular gamma value, or reset it to a straight line.

- Gtk.Gamma_Curve Widget Hierarchy
- Gtk.Gamma_Curve Subprograms

## Widget Hierarchy

    Gtk_Object                    (see section Package Gtk.Object)
       \___ Gtk_Widget            (see section Package Gtk.Widget)
          \___ Gtk_Container      (see section Package Gtk.Container)
             \___ Gtk_Box         (see section Package Gtk.Box)
                \___ Gtk_Gamma_Curve (see section Package Gtk.Gamma_Curve)

## Subprograms

    procedure Gtk_New
      (Gamma_Curve        : out    Gtk_Gamma_Curve);

| Create a new Gtk_Gamma_Curve.

    function Get_Type              return Gtk.Gtk_Type;

| Return the internal value associated with a Gtk_Gamma_Curve.

    function Get_Curve
      (Gamma_Curve        : access Gtk_Gamma_Curve_Record)
       return Gtk.Curve.Gtk_Curve;

| Return the Curve widget associated with a Gamma_Curve.

    function Get_Gamma
      (Gamma_Curve        : access Gtk_Gamma_Curve_Record)
       return Gfloat;

| Return the Gamma value associated with a Gamma_Curve.

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