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Diffstat (limited to 'man3')
| -rw-r--r-- | man3/LIBAXL_REQUEST_BELL.3 | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/man3/LIBAXL_REQUEST_BELL.3 b/man3/LIBAXL_REQUEST_BELL.3 new file mode 100644 index 0000000..f3c974c --- /dev/null +++ b/man3/LIBAXL_REQUEST_BELL.3 @@ -0,0 +1,53 @@ +.TH LIBAXL_REQUEST_BELL 3 libaxl +.SH NAME +LIBAXL_REQUEST_BELL - Ring the keyboard bell +.SH SYNOPSIS +.nf +#include <libaxl.h> + +#define LIBAXL_REQUEST_BELL 49 +struct libaxl_request_bell { + uint8_t \fIopcode\fP; + uint8_t \fIpercent\fP; + uint16_t \fI_request_length\fP; +}; +.fi +.SH DESCRIPTION +The display server shall ring the bell +on the keyboard, at a volume relative to +the base volume for the keyboard, if possible. +.PP +The value of the +.I percent +field shall be set to a value within [-100, 100], +where -100 maps to a volume of 0, 0 maps to the +base volume, and 100 maps to 100%. Other values +are interpreted via piece-wise linear interpolation. +.PP +Other fields are filled in automatically by the +.BR libaxl_send_request (3) +function. +.SH EXTENDED DESCRIPTION +The volume at which the bell is rung is +.I (base - (base * percent) / 100 + percent) +when +.I percent +is nonnegative and +.I (base + (base * percent) / 100) +when +.I percent +is negative; +where +.I base +is the base volume for the keyboard. +.SH ERRORS +.TP +.B LIBAXL_ERROR_VALUE (3) +.I percent +is less than -100 or greater than 100. +.SH REPLIES +None. +.SH SEE ALSO +.BR libaxl_send_request (3), +.BR LIBAXL_REQUEST_CHANGE_KEYBOARD_CONTROL (3), +.BR LIBAXL_REQUEST_GET_KEYBOARD_CONTROL (3) |