| | | ATK - Accessibility Toolkit |
|---|
AtkValue — The ATK interface implemented by valuators and components which display or select a value from a bounded range of values.
struct AtkValue; void atk_value_get_current_value (AtkValue *obj, GValue *value); void atk_value_get_maximum_value (AtkValue *obj, GValue *value); void atk_value_get_minimum_value (AtkValue *obj, GValue *value); gboolean atk_value_set_current_value (AtkValue *obj, const GValue *value);
GInterface +----AtkValue
AtkValue is implemented by AtkNoOpObject.
AtkValue should be implemented for components which either display a value from a bounded range, or which allow the user to specify a value from a bounded range, or both. For instance, most sliders and range controls, as well as dials, should have AtkObject representations which implement AtkValue on the component's behalf. AtKValues may be read-only, in which case attempts to alter the value return FALSE to indicate failure.
void atk_value_get_current_value (AtkValue *obj, GValue *value);
Gets the value of this object.
| obj : | a GObject instance that implements AtkValueIface |
| value : | a GValue representing the current accessible value |
void atk_value_get_maximum_value (AtkValue *obj, GValue *value);
Gets the maximum value of this object.
| obj : | a GObject instance that implements AtkValueIface |
| value : | a GValue representing the maximum accessible value |
void atk_value_get_minimum_value (AtkValue *obj, GValue *value);
Gets the minimum value of this object.
| obj : | a GObject instance that implements AtkValueIface |
| value : | a GValue representing the minimum accessible value |
gboolean atk_value_set_current_value (AtkValue *obj, const GValue *value);
Sets the value of this object.
| obj : | a GObject instance that implements AtkValueIface |
| value : | a GValue which is the desired new accessible value. |
| Returns : | TRUE if new value is successfully set, FALSE otherwise. |
| << AtkUtil |