PTPDFViewCtrlPagePresentationModeDidChangeNotification
extern const NSNotificationName _Nonnull PTPDFViewCtrlPagePresentationModeDidChangeNotification
Posted when the PTPDFViewCtrl
‘s page presentation mode changes.
The notification object is the PTPDFViewCtrl
that posted the notification. The userInfo
dictionary
contains an entry for the PTPDFViewCtrlPagePresentationModeUserInfoKey
key with the new page
presentation mode.