Up: Computer Input Modalities
Mice are the most common input devices for graphical user interfaces
(GUIs). They come in different shapes and are equipped with one, two, or
three buttons which are used for positioning and selection tasks. Mice can
work either mechanically or optically. Within this report, the method of
construction is not as interesting as the functionality of the mouse.
Only three of the above mentioned operations are possible with the mouse:
- Action On schreen some action buttons are displayed like OK
or CANCEL. Moving the mouse pointer to these buttons and clicking the
mouse button starts the desired action.
- Mode change This can be performed by clicking check-boxes or
radio-buttons. But also the clicking on windows to select them, can be
seen as a mode change.
- Navigation This is the most natural use the mouse is meant
But through software the mouse can do more:
- Dragging. Selecting an item, keeping the mouse-button down. Moving
the mouse to a new locationg and release the mouse button. The effect
of this is moving or copying the item to a new location.
- Numerical ('Value') input: By selecting a scroll bar and dragging
it, windows can be scrolled. Using sliders, a continuous input value
can be given by dragging the slider control.
Esprit Project 8579/MIAMI (Schomaker et al., '95)
Thu May 18 16:00:17 MET DST 1995