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X11R7.4 - man page for xkbgetdeviceledinfo (x11r4 section 3)

XkbGetDeviceLedInfo(3)				    XKB FUNCTIONS			       XkbGetDeviceLedInfo(3)

XkbGetDeviceLedInfo - Query the indicator names, maps, and state associated with an LED feedback of an input extension device
Status XkbGetDeviceLedInfo ( dpy, device_info, led_class, led_id, which ) Display * dpy; XkbDeviceInfoPtr device_info; unsigned int led_class; unsigned int led_id; unsigned int which;
- dpy connection to X server - device_info structure to update with results - led_class LED feedback class assigned by input extension - led_id LED feedback ID assigned by input extension - which mask indicating desired information
XkbGetDeviceLedInfo queries the server for the desired LED information for the feedback specified by led_class and led_id for the X input extension device indicated by device_spec->device_info and waits for a reply. If successful, XkbGetDeviceLedInfo backfills the relevant fields of device_info as determined by which with the results and returns Success. Valid values for which are the inclusive OR of any of XkbXI_IndicatorNamesMask, XkbXI_IndicatorMapsMask, and XkbXI_IndicatorStateMask. The fields of device_info that are filled in when this request succeeds are name, type, supported, and unsup- ported, and portions of the leds structure corresponding to led_class and led_id as indicated by the bits set in which. The device_info->leds vector is allocated if necessary and sz_leds and num_leds filled in. The led_class, led_id and phys_indicators fields of the device_info->leds entry corresponding to led_class and led_id are always filled in. If which contains XkbXI_IndicatorNamesMask, the names_present and names fields of the device_info->leds struc- ture corresponding to led_class and led_id are updated, if which contains XkbXI_IndicatorStateMask, the corre- sponding state field is updated, and if which contains XkbXI_IndicatorMapsMask, the maps_present and maps fields are updated. If a compatible version of Xkb is not available in the server or the Xkb extension has not been properly ini- tialized, XkbGetDeviceLedInfo returns BadAccess. If allocation errors occur, a BadAlloc status is returned. If the device has no indicators, a BadMatch error is returned. If ledClass or ledID have illegal values, a Bad- Value error is returned. If they have legal values but do not specify a feedback that contains LEDs and is associated with the specified device, a BadMatch error is returned.
BadAccess The Xkb extension has not been properly initialized BadAlloc Unable to allocate storage BadMatch A compatible version of Xkb was not available in the server or an argument has correct type and range, but is otherwise invalid BadValue An argument is out of range X Version 11 libX11 1.2.1 XkbGetDeviceLedInfo(3)

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