| Allegro CL version 10.1 Unrevised from 10.0 to 10.1. 10.0 version |
Arguments:
Returns a list of zero or more of the keyword symbols shown below,
indicating the capabilities of the computer's touch input device, if
it has one. nil
will be returned if there is
no touch input device.
Here are Microsoft's explanations of the capabilities. Apparently integrated means built into the computer (such as its screen) while external means connected to it (such as a tablet). Multiple inputs refers to multiple simultaneous fingers (or pens).
:integrated-touch
- an integrated touch digitizer is
used for input.
:external-touch
- an external touch digitizer is used
for input.
:integrated-pen
- an integrated pen digitizer is used
for input.
:external-pen
- an external pen digitizer is used for
input.
:multi-input
- an input digitizer with support for
multiple inputs is used for input.
:ready
- the input digitizer is ready for input. If
this value is unset, it may mean that the tablet service is stopped,
the digitizer is not supported, or digitizer drivers have not been
installed.
See also the touch-point
class and About Touch
Gesture Support in Common Graphics on Windows
in cgide.htm.
Copyright (c) 1998-2022, Franz Inc. Lafayette, CA., USA. All rights reserved.
This page was not revised from the 10.0 page.
Created 2019.8.20.
| Allegro CL version 10.1 Unrevised from 10.0 to 10.1. 10.0 version |