giiQueryValInfo - Get data about valuators
int giiQueryValInfo(gii_input_t inp, uint32_t origin,
uint32_t valnumber, gii_cmddata_getvalinfo *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 giiQueryValInfo is used on devices, where giiQueryDeviceInfo(3) has
indicated that the device has one or more valuator axes and you want to
gather additional info about the physical equivalent of each axis.The
parameters inp and origin select the input to query and valnumber
selects the specific valuator (an input can have multiple valuators).
The queried data is put into info. See gii_cmddata_getvalinfo(3) for
the description of the structure.
Returns 0 on success (info is valid, then) or -1 otherwise.