A fast and easily customised operating system
for ARM devices
HAL Touchscreen API
Hardware Abstraction Layer
» List of HAL APIs
» HAL Touchscreen API
PDA-type devices usually have a touchscreen as their primary pointing device. This API provides a simple interface to a touchscreen. The calls are described in terms of a resistive touchscreen, but other technologies should be mappable onto it. Interrupt operation is yet to be defined.
Entry points
Items marked ¶ are internal calls for OS use only; their functionality and availability is subject to change without warning. User programs interested in using these calls should instead use the equivalent RISC OS SWI call (if available).