This should be implemented by most if not all UI elements with an actual on-screen presence, i.e. components which can be said to have a screen-coordinate bounding box. Virtually all widgets will need to have Atk::Component implementations provided for their corresponding Atk::Object class. In short, only UI elements which are* not* GUI elements will omit this ATK interface.
A possible exception might be textual information with a transparent background, in which case text glyph bounding box information is provided by Atk::Text. 
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 Public Member Functions | 
| guint | add_focus_handler (AtkFocusHandler handler) | 
|  | Add the specified handler to the set of functions to be called when this object receives focus events (in or out). 
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| bool | contains (int x, int y, CoordType coord_type) const | 
|  | Checks whether the specified point is within the extent of the component . 
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| Glib::RefPtr<Atk::Object> | get_accessible_at_point (int x, int y, CoordType coord_type) | 
|  | Gets a reference to the accessible child, if one exists, at the coordinate point specified by x and y . 
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| void | get_extents (int& x, int& y, int& width, int& height, CoordType coord_type) const | 
|  | Gets the rectangle which gives the extent of the component . 
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| Layer | get_layer () const | 
|  | Gets the layer of the component. 
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| int | get_mdi_zorder () const | 
|  | Gets the zorder of the component. 
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| void | get_position (int& x, int& y, CoordType coord_type) const | 
|  | Gets the position of component in the form of a point specifying component 's top-left corner. 
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| void | get_size (int& width, int& height) const | 
|  | Gets the size of the component in terms of width and height. 
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| const AtkComponent* | gobj () const | 
|  | Provides access to the underlying C GObject. 
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| AtkComponent* | gobj () | 
|  | Provides access to the underlying C GObject. 
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| bool | grab_focus () | 
|  | Grabs focus for this component . 
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| void | remove_focus_handler (guint handler_id) | 
|  | Remove the handler specified by handler_id from the list of functions to be executed when this object receives focus events (in or out). 
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| bool | set_extents (int x, int y, int width, int height, CoordType coord_type) | 
|  | Sets the extents of component . 
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| bool | set_position (int x, int y, CoordType coord_type) | 
|  | Sets the postition of component . 
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| bool | set_size (int width, int height) | 
|  | Set the size of the component in terms of width and height. 
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| virtual | ~Component () | 
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 Static Public Member Functions | 
| static void | add_interface (GType gtype_implementer) | 
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 Protected Member Functions | 
| virtual guint | add_focus_handler_vfunc (AtkFocusHandler handler) | 
| virtual bool | contains_vfunc (int x, int y, CoordType coord_type) const | 
| virtual Glib::RefPtr<Atk::Object> | get_accessible_at_point_vfunc (int x, int y, CoordType coord_type) | 
| virtual void | get_extents_vfunc (int& x, int& y, int& width, int& height, CoordType coord_type) const | 
| virtual Layer | get_layer_vfunc () const | 
| virtual int | get_mdi_zorder_vfunc () const | 
| virtual void | get_position_vfunc (int& x, int& y, CoordType coord_type) const | 
| virtual void | get_size_vfunc (int& width, int& height) const | 
| virtual bool | grab_focus_vfunc () | 
| virtual void | remove_focus_handler_vfunc (guint handler_id) | 
| virtual bool | set_extents_vfunc (int x, int y, int width, int height, CoordType coord_type) | 
| virtual bool | set_position_vfunc (int x, int y, CoordType coord_type) | 
| virtual bool | set_size_vfunc (int width, int height) | 
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 Related Functions | 
| (Note that these are not member functions.) 
 
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| Glib::RefPtr<Atk::Component> | wrap (AtkComponent* object, bool take_copy=false) |