Abstract

Explicit support for custom gadgets is provided, at a system software level, in a manner that is essentially application-transparent. Specific support is provided for the addition of one custom gadget per window. The custom gadget is identified by a specific numeric code in the same manner as the close and zoom boxes. An application simply tells the system software what the custom gadget for a particular window should look like. The code responsible for drawing that window's frame then knows where to find the image of the custom gadget and will render it appropriately. When a user clicks in the custom gadget, the system software notifies the application of the event by means of the numeric code associated with the custom gadget. More particularly, in accordance with one embodiment of the invention, a custom interactive user-interface element is provided in a title bar of a window of an application program in a graphical, event-driven computer system having a computer display. The custom interactive user-interface element is provided by storing information, referring to an icon stored as part of said application program and used to visually represent the custom interactive user-interface element, in a location accessible to a Window Manager. The Window Manager then draws on the computer display a frame of the window including the icon used to visually represent the custom interactive user-interface element.

Other References

• Burge, Thomas E. et al., "Advanced 05/2, Presentation Manager Programming", John Wiley & Sons, Inc., 293-308 199