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XkbGetIndicatorChanges(3) XKB FUNCTIONS XkbGetIndicatorChanges(3)
NAME
XkbGetIndicatorChanges - Updates a local copy of the keyboard description with the actual
values of one or more calls to XkbNoteIndicatorChanges
SYNOPSIS
Status XkbGetIndicatorChanges (Display *dpy, XkbDescPtr xkb, XkbIndicatorChangesPtr
changes, unsigned int state);
ARGUMENTS
- dpy connection to the X server
- xkb keyboard description to hold the new values
- changes
indicator maps/state to be obtained from the server
- state
backfilled with the state of the indicators
DESCRIPTION
Whenever an indicator changes state, the server sends XkbIndicatorStateNotify events to
all interested clients. Similarly, whenever an indicator's map changes, the server sends
XkbIndicatorMapNotify events to all interested clients.
To receive XkbIndicatorStateNotify events, use XkbSelectEvents with both the
bits_to_change and values_for_bits parameters containing XkbIndicatorStateNotifyMask. To
receive XkbIndicatorMapNotify events, use XkbSelectEvents with XkbIndicatorMapNotifyMask.
To receive events for only specific indicators, use XkbSelectEventDetails. Set the
event_type parameter to XkbIndicatorStateNotify or XkbIndicatorMapNotify, and set both the
bits_to_change and values_for_bits detail parameters to a mask where each bit specifies
one indicator, turning on those bits that specify the indicators for which you want to
receive events.
Both types of indicator events use the same structure:
typedef struct _XkbIndicatorNotify {
int type; /* Xkb extension base event code */
unsigned long serial; /* X server serial number for event */
Bool send_event; /* True => synthetically generated */
Display * display; /* server connection where event generated */
Time time; /* server time when event generated */
int xkb_type; /* specifies state or map notify */
int device; /* Xkb device ID, will not be XkbUseCoreKbd */
unsigned int changed; /* mask of indicators with new state or map */
unsigned int state; /* current state of all indicators */
} XkbIndicatorNotifyEvent;
xkb_type is either XkbIndicatorStateNotify or XkbIndicatorMapNotify, depending on whether
the event is a kbIndicatorStateNotify event or kbIndicatorMapNotify event.
The changed parameter is a mask that is the bitwise inclusive OR of the indicators that
have changed. If the event is of type XkbIndicatorMapNotify, changed reports the maps that
changed. If the event is of type XkbIndicatorStateNotify, changed reports the indicators
that have changed state. state is a mask that specifies the current state of all indica-
tors, whether they have changed or not, for both XkbIndicatorStateNotify and IndicatorMap-
Notify events.
When your client application receives either a XkbIndicatorStateNotify event or XkbIndica-
torMapNotify event, you can note the changes in a changes structure by calling Xkb-
NoteIndicatorChanges.
XkbGetIndicatorChanges examines the changes parameter, pulls over the necessary informa-
tion from the server, and copies the results into the xkb keyboard description. If any
bits are set in the state_changes field of changes, XkbGetIndicatorChanges also places the
state of those indicators in state. If the indicators field of xkb is NULL, XkbGetIndica-
torChanges allocates and initializes it. To free the indicators field, use XkbFreeIndica-
tors.
DIAGNOSTICS
BadAlloc Unable to allocate storage
BadImplementation
Invalid reply from server
BadMatch A compatible version of Xkb was not available in the server or an argument
has correct type and range, but is otherwise invalid
SEE ALSO
XkbFreeIndicators(3), XkbGetIndicatorChanges(3), XkbNoteIndicatorChanges(3), XkbSe-
lectEvents(3), XkbSelectEventDetail(3)
X Version 11 libX11 1.6.7 XkbGetIndicatorChanges(3)
Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
On Apache
Under GNU General Public License
2024-04-19 14:29 @3.17.150.89 CrawledBy Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)