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GNOME Library Reference Manual | ![]() |
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#include <libgnome/libgnome.h> enum GnomeTriggerType; void (*GnomeTriggerActionFunction) (char *msg, char *level, char *supinfo[]);
The triggers API provides a way for applications to tell GNOME about interesting events that then cause something to happen (for example, playing a sound). An event can either be a function that is called, a sound that is played or an external command that is run.
Each trigger can optionally have a level associated with it and a section. The section is a list of strings that help to classify the event, which imposes a hierarchy on the trigger system. For example, messages about the hard drive partition /dev/hda1 may come under the section ("system", "device", "disk", "/dev/hda1"). This means that an application could trigger all events for the ("system", "device") sections and include those events, or be more specific and just trigger those for ("system", "device", "disk", "/dev/hda1").
At the present time, triggers are not widely used in GNOME, being mostly used to play sound events in response to certain actions.
typedef enum { GTRIG_NONE, GTRIG_FUNCTION, GTRIG_COMMAND, GTRIG_MEDIAPLAY } GnomeTriggerType;
These are the different types of triggers that can be activated by an application.
void (*GnomeTriggerActionFunction) (char *msg, char *level, char *supinfo[]);
The signature of a function that can used as a target for GTRIG_FUNCTION types of GnomeTrigger instances.
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The human-readable message that was passed to gnome_triggers_do() . May be
NULL .
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The severity level of the event. May be NULL .
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The section in which the event belongs. This is a NULL terminated
array.
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