Hardware Reference
In-Depth Information
scrolling mouse on the market (Mouse Systems introduced the ProAgio and Genius EasyScroll in
1995), it was the first to have widespread support. Since then, Logitech, IBM, and virtually all other
mouse vendors have made scroll wheels or similar devices compatible with the Microsoft design as
standard across almost all models, including OEM mice bundled with computer systems.
The wheel has two main functions. The primary function is to act as a scrolling device, enabling you
to scroll through documents or web pages by manipulating the wheel with your index finger. In some
models the wheel can also function as a third mouse button when you press it.
Each vendor's mouse driver software offers unique features to enhance the basic operation of the
mouse. For example, Logitech's MouseWare drivers enable you to select which function the OS
should perform when you click one of the mouse's extra buttons. The drivers also provide various
options for how to scroll with each wheel click (three lines, six lines, or one screen). Microsoft's
IntelliMouse driver offers a feature called ClickLock, which allows you to drag items without
holding down the primary mouse button. In addition, it offers a Universal Scroll feature that adds
scrolling mouse support to applications that lack such support. To get the most from whatever
scrolling or other advanced-feature mouse you have, be sure you use the latest mouse drivers for your
specific make and model.
Touch-Sensitive Mice
The latest evolution in mouse scrolling and control includes touch technology, which basically uses a
smooth surface with touch sensors to replace the traditional scroll wheel and, in more advanced
models, the buttons as well. Some, like the Microsoft Touch Mouse, also support various gestures
using your thumb or multiple fingers, which can be used to manipulate Windows in new ways.
The simplest examples use a touch-sensitive strip or panel to replace the scroll wheel. One example
is the Microsoft Explorer Touch Mouse (see Figure 15.14 ) . Using one finger on the touch-sensitive
strip, you can scroll both vertically and horizontally. You can scroll slowly by swiping your finger,
or more quickly by flicking it faster. These types of mice still have traditional buttons using
mechanical switches, although many have buttons on the side in addition to the standard top-left and -
right buttons. Using the software that comes with the mouse, you can customize what the extra buttons
do.
 
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