Topics
	Gesture Subscription

Data Structures
struct	GeisInputFuncs
	Callback functions used to handle changes in the available input devices. More...

Vendor-defined Configuration Items
These configuration items are not a part of the GEIS specification and may change.
typedef unsigned int	GeisInputDeviceId
typedef void(*	GeisInputCallback) (void cookie, GeisInputDeviceId device_id, void attrs)
	Prototype for input device callback functions.
typedef struct GeisInputFuncs	GeisInputFuncs
	Callback functions used to handle changes in the available input devices.
GeisStatus	geis_input_devices (GeisInstance geis_instance, GeisInputFuncs func, void cookie)
	Registers a callback to receive information on input devices.
#define	GEIS_ALL_INPUT_DEVICES

Detailed Description

Typedef Documentation

◆ GeisInputCallback

typedef void(* GeisInputCallback) (void *cookie, GeisInputDeviceId device_id, void *attrs)

Prototype for input device callback functions.

◆ GeisInputFuncs

typedef struct GeisInputFuncs GeisInputFuncs

Callback functions used to handle changes in the available input devices.

Function Documentation

◆ geis_input_devices()

GeisStatus geis_input_devices	(	GeisInstance	geis_instance,
		GeisInputFuncs *	func,
		void *	cookie )

Registers a callback to receive information on input devices.

Parameters

[in]	geis_instance	points to a geis gesture subscription instance
[in]	func	points to a GeisInputFuncs table
[in]	cookie	an application specific value to be passed to the callback

The callback is called for each gesture-capable input device available for the display region associated with the geis subscription instance. Over time, as gesture-capable input devices appear and disappear or change their abilities or configuration, the callback may be called again.

Return values

GEIS_BAD_ARGUMENT	an invalid argument value was passed
GEIS_STATUS_SUCCESS	normal successful completion

Topics