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Caution: This version of this document is no longer maintained. For the latest documentation, see http://www.qnx.com/developers/docs.

PtAppAddEventHandler()

Add an event handler to an application's callback list

Synopsis:

void PtAppAddEventHandler( unsigned long event_mask,
        int (*func)(void *,PtCallbackInfo_t *),
        void *data);

Arguments:

event_mask
The event type that causes the application to invoke the event handler func.
func
A pointer to the event handler function you want to add. The function takes this form: int (*func)(void *,PtCallbackInfo_t *).
data
A pointer to data that you want to pass as the second argument to the function.

Library:

ph

Description:

This function adds an event handler to the application's Pt_CB_RAW callback list. The application invokes this handler whenever an event type that matches one of the bits in event_mask intersects with the application .

For more information, see the Manipulating Resources in Application Code chapter of the Photon Programmer's Guide.

Classification:

Photon

Safety:
Interrupt handler No
Signal handler No
Thread No

See also:

PtAppGetResources(), PtAppGetResource(), PtAppRemoveCallback(), PtAppRemoveEventHandler(), PtAppSetResource(), PtAppSetResources(), PtSetArg().

"Event handlers" in the Managing Widgets in Application Code chapter of the Photon Programmer's Guide


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