PTPDFViewCtrlWillExecuteActionNotification
extern const NSNotificationName _Nonnull PTPDFViewCtrlWillExecuteActionNotification
Posted when the PTPDFViewCtrl
will execute an action with an action parameter.
The notification object is the PTPDFViewCtrl
that posted the notification. The userInfo
dictionary contains an entry for the PTPDFViewCtrlActionParameterUserInfoKey
key with the
action parameter.