hidd_report_len()
Get length of a raw report sent/received by device
Synopsis:
#include <sys/hiddi.h>
int hidd_report_len( struct hidd_report_instance *report_instance,
_Uint16t *report_len );Arguments:
- report_instance
-
The handle of a report instance, as returned by hidd_get_report_instance().
- report_len
- A pointer to memory where to store the length of the raw report the device will send/receive.
Description:
The hidd_report_len() function gets the length of a raw report sent or received by a device. You would typically use this function to allocate buffer space for a output/feature report to send to a device. You would then use hidd_set_*() functions to fill in the data for the report.
Returns:
- EOK
- Success.
- EINVAL
- One of the arguments is NULL.
Classification:
QNX OS
| Safety: | |
|---|---|
| Cancellation point | Yes |
| Signal handler | No |
| Thread | Yes |
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