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PtGetCallbackList()

Get a callback list

Synopsis:

void *PtGetCallbackList( PtWidget_t *widget,
                         long cb_type );

Arguments:

widget

The widget pointer to get the callback list from.

cb_type

The callback list type to return.

Description:

This function returns the requested callback list of cb_type.

Returns:

A pointer to a PtCallbackList_t if the callback list type exists, NULL otherwise.

Examples:

PtCallbackList_t *cb;
if( (cb = PtGetCallbackList( widget, Pt_CB_ARM) ) {
    // do the work to create and fill in the callback data
   ...
   PtInvokeCallbackList( cb, widget, &cbinfo );
}

Classification:

Photon

Safety:
Interrupt handler	No
Signal handler	No
Thread	No

See also:

PtInvokeCallbackList(), PtInvokeCallbackType().

PtCallbackInfo_t in the Photon Widget Reference

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