Windows Vista Security: Praxisorientierte Sicherheit für Profis

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Chapter 13: Making the Most of Your Computer’s Accessories

While the Magnifier is running, you can increase magnification by pressing the Ctrl

key and the equals sign (=) key, or decrease magnification by pressing the Ctrl key

and the minus sign (–) key. You can set Magnifier options by completing the follow-

ing steps:

1. Click the Magnifier taskbar button. This displays a Properties dialog box.

2. Use the “Scale factor” list to set the magnification level of the Magnifier window.

The default scale is 2 × , or twice normal, and you can select a value as high as 16 × .

3. To reverse the colors on the screen, select the “Invert colors” checkbox.

4. By default, the Magnifier is docked at the top of the screen. Using the “Dock posi-

tion” list, you can set the dock position as Top, Bottom, Left, or Right. If you want

the Magnifier window to float rather than be docked, clear the Docked checkbox.

5. When you have finished configuring your settings, click Hide to close the Prop-

erties dialog box. Your preferences are remembered each time you start and use

the Magnifier.

Using the On-Screen Keyboard

The On-Screen Keyboard is designed to make it easier to use a mouse or an alterna-

tive input device for typing. Similar to Input Panel, characters typed on the On-

Screen Keyboard are inserted into the current application.

You can turn on the On-Screen Keyboard by completing these steps:

1. Click Start, and then click Control Panel.

2. In the Control Panel, click Ease of Access and then click Ease of Access Center.

3. Click Start On-Screen Keyboard.

To exit the On-Screen Keyboard and prevent it from starting automatically, click File

and then click Exit.

When the keyboard is on, as shown in Figure 13-26, use the mouse, pen, or other

input device to select characters, press function keys, or click a special-purpose key,

such as Home, Page Up, or Insert. Ctrl, Windows, and Alt keys are provided, allow-

ing you to enter keystroke combinations, such as Ctrl-Alt-Delete, by clicking each

required key. Between the right Windows logo key and the right Ctrl key, you’ll find

a Properties button. Clicking this button is the equivalent of right-clicking and select-

ing Properties in the active window.

By default, the keyboard is configured to type characters when you click the keys. You

can also configure the keyboard to use hovering to select characters or to accept input

from a joystick. With hovering, you move the pointer over a character for a specified

period, such as 1 second, to select that character. With a joystick, you move the joy-

stick and then click the joystick button when over a character to select that character.

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You can configure the way characters are selected by completing the following steps:

1. In the On-Screen Keyboard, select Typing Mode on the Settings menu.

2. In the Typing Mode dialog box, shown in Figure 13-27, choose an appropriate

typing mode.

3. To click to select a key, choose “Click to select.”

4. To hover to select a key, choose “Hover to select” and then set the minimum

hover time, such as 1.00 seconds.

5. To use a joystick to select a key, choose “Joystick or key to select” and then set

the interval at which Windows Vista scans for button presses on the joystick,

such as 0.50 seconds.

6. Click OK to save your settings. Your preferences are remembered each time you

start and use the On-Screen Keyboard.

Figure 13-26. Using the On-Screen Keyboard to input text, and pressing keys using a mouse,

joystick, or Tablet PC pen

Figure 13-27. Configuring typing mode options