ggiJoinInputs(3) GGI ggiJoinInputs(3)NAME
ggiJoinInputs, ggiEventPoll, ggiEventSelect, ggiEventsQueued, ggiEven‐
tRead, ggiSetEventMask, ggiGetEventMask, ggiAddEventMask, ggiRe‐
moveEventMask : Event management for LibGGI visual
SYNOPSIS
#include <ggi/ggi.h>
gii_event_mask ggiEventPoll(ggi_visual_t vis, gii_event_mask mask,
struct timeval *t);
int ggiEventsQueued(ggi_visual_t vis, gii_event_mask mask);
int ggiEventRead(ggi_visual_t vis, gii_event *ev,
gii_event_mask mask);
int ggiSetEventMask(ggi_visual_t vis, gii_event_mask evm);
gii_event_mask ggiGetEventMask(ggi_visual_t vis);
gii_input_t ggiJoinInputs(ggi_visual_t vis, gii_input_t inp);
#define ggiAddEventMask(vis,mask) \
ggiSetEventMask((vis), ggiGetEventMask((vis)) | (mask))
#define ggiRemoveEventMask(vis,mask) \
ggiSetEventMask((vis), ggiGetEventMask((vis)) & ~(mask))
DESCRIPTION
LibGGI provides input facilities through an auxiliary library, LibGII.
Each LibGGI visual internally contains a gii_input_t input, and all
LibGII functions are available to manipulate and process inputs. The
LibGGI versions provided of most LibGII functions simply take a
ggi_visual_t rather than gii_input_t for convenience during everyday
usage. Events are LibGII types. All other semantics are the same; see
libgii(7) for details.
Important: By default LibGGI visuals autodetect and open the
appropriate inputs, including mouse and keyboard and any other
inputs that are under the X target. Thus in the usual cases
there is no need to open a LibGII gii_input_t directly (and that
may in fact fail because an input device is already open). The
LibGGI ggiEvent* functions must be used to do event handling
with LibGGI visuals, and provide adequate support for most
everyday, single-visual usage.
Advanced management of input sources is accomplished by detach‐
ing the input from the visual and using LibGII functions on the
separate visual handle (see ggiDetachInput(3)). This is encour‐
aged, for example, when joining inputs from multiple visuals,
because when two visuals share the same joined input, you cannot
ggiClose both of the visuals (a fatal error will result, because
closing the first visual closes both of the joined inputs and
leaves the second closed visual with a stale input handle.)
RETURN VALUE
See return values of giiJoinInputs(3), giiEventPoll(3), giiEventSe‐
lect(3), giiEventsQueued(3), giiEventRead(3), giiSetEventMask(3),
giiGetEventMask(3), giiAddEventMask(3), giiRemoveEventMask(3)SEE ALSOggiGetInput(3), giiEventPoll(3), giiSetEventMask(3)libggi-2.2.x 2006-12-30 ggiJoinInputs(3)
