Touch Input Device¶
Available on iOS
Interface to the built-in touchscreen on an iOS device.
This device detects and tracks the movement of a single touch (e.g. finger) on the screen. If the screen is touched in multiple locations simultaneously, only the first detected touch is tracked. All other touches are ignored.
Variable in which to store the horizontal position of the touch (in degrees) on the screen
Variable in which to store the vertical position of the touch (in degrees) on the screen
Variable in which to store the touch state (true if a touch is in progress, false otherwise)
Name of the display on which to track touches. If omitted, the default display (if available) will be used.
YES, the device will start I/O automatically (as if by an
implicit Start IO Device action) when the experiment starts running.
Note: Device I/O will always stop automatically when the experiment stops running, irrespective of this setting.
Alternative device to use if this one fails to initialize (e.g. because the required hardware is not available). If
#allowAltFailover is set to 0 or false, this parameter is ignored.
Allowed at top level: