IBM 4820, System Reference Manual

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Lift-off The system moves the cursor to the touch point, but does not generate a
mouse button down. You can slide your finger around the screen and your
movements are followed; however, the system generates mouse move events
only. Lifting your finger off of the screen generates a mouse button down. The
system then waits for a system-defined time delay, and generates a button up.
Drag is not supported; however lift-off mode is useful for applications that
requires greater accuracy.
Touchdown
The system moves the cursor to the touch point, generates a button down,
waits for a system-defined time delay, and generates a button up. The system
does not generate a mouse event on finger lift-off. Drag is not supported in this
mode.
Table 11-2 describes how to click, double click, and drag, using the different touch
modes.
Table 11-2. Summary of Touch Modes
Touch Mode How to Click How to Double-Click How to Drag
Desktop Touch the object and
lift your finger.
Touch twice in quick
succession in the same
place.
Touch the object,
pause briefly, and slide
your finger.
Drawing
Button
Touch the object Click
Not supported
Lift-off
Touchdown Touch the object.
Provides a pause for
user to receive visual
feedback that a button
was pressed and
released.
Selecting a touch mode
Use the Touch Settings tab or the Special tab to select a touch mode. Some touch
modes require you to select options on both tabs.
Configuring the touch sound
You can configure your touchscreen so that a beep is produced when you touch the
screen, or when you remove your touch. To enable or disable the touch sound:
v
Select the Touch Settings tab to access the Touch Sound option.
v
Click Beep to cycle through the choices:
– Beep on touchdown produces a beep when you touch the screen
– Beep on lift-off produces a beep when you lift your finger off the screen.
– Beep off produces no sound when you touch the screen. This is the default
setting.
11-4
4820 SurePoint Solution System Reference