giiQueryDeviceInfo, giiQueryDeviceInfoByNumber — Get information about a given GII input source
#include <ggi/gii.h>
int giiQueryDeviceInfo( | inp, | |
origin, | ||
info) ; |
gii_input_t * | inp; |
uint32 | origin; |
gii_cmddata_getdevinfo * | info; |
int giiQueryDeviceInfoByNumber( | inp, | |
number, | ||
origin, | ||
info) ; |
gii_input_t * | inp; |
uint32 | number; |
uint32 * | origin; |
gii_cmddata_getdevinfo * | info; |
Though when using GII inputs the exact type of device is fully transparent to the program, information about the device that is actually attached to a given gii input and origin id can be queried, e.g. for configuration interfaces.
For giiQueryDeviceInfo the parameters inp and origin select the input to query. This version is usually used, if you want to identify a device after getting an event from it.
For giiQueryDeviceInfoByNumber the parameters inp and number select the input to query - origin gets set to the origin ID the queried device has. This version is used, when you want to query all known devices.
The queried data is put into info, which has the following fields:
Name of the device (string, 74+\0 chars max)
Abbreviated devicename (string, 4+\0 chars max)
Events this device can generate
Number of keys/buttons this device has
Number of valuator axes the device has
Returns 0 on success (info is valid, then) or -1 otherwise.