Method and apparatus for controlling the tracking of movable control elements in a graphical user interface
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United States of America Patent
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May 4, 1999
Issued Date -
N/A
app pub date -
Oct 6, 1997
filing date -
May 5, 1995
priority date (Note) -
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status (Latency Note)
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Abstract
In a graphical user interface for computers, a scroll bar tracking and drawing procedure associates elements of the scroll bar with regions on the display. The region for the thumb can move relative to the other regions, and thereby track the movement of the cursor. Within each element's associated region, any desired pattern can be drawn. As a result, the thumb can be non-rectangular in shape. Furthermore, since the image within a region can be any arbitrary pattern, the image for the thumb can be either a complete image, to accommodate live scrolling, or a ghost image to accommodate ghost scrolling. As such, a single procedure can support both modes of operation, and permit the interface to be easily switched between the two.
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