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	1	\section{\class{wxNotebookEvent}}\label{wxnotebookevent}
	2
	3	This class represents the events generated by a notebook control: currently,
	4	there are two of them. The PAGE\_CHANGING event is sent before the current
	5	page is changed. It allows to the program to examine the current page (which
	6	can be retrieved with
	7	\helpref{GetOldSelection()}{wxnotebookeventgetoldselection}) and to veto the page
	8	change by calling \helpref{Veto()}{wxnotifyeventveto} if, for example, the
	9	current values in the controls of the old page are invalid.
	10
	11	The second event - PAGE\_CHANGED - is sent after the page has been changed and
	12	the program cannot veto it any more, it just informs it about the page change.
	13
	14	To summarize, if the program is interested in validating the page values
	15	before allowing the user to change it, it should process the PAGE\_CHANGING
	16	event, otherwise PAGE\_CHANGED is probably enough. In any case, it is probably
	17	unnecessary to process both events at once.
	18
	19	\wxheading{Derived from}
	20
	21	\helpref{wxNotifyEvent}{wxnotifyevent}\\
	22	\helpref{wxCommandEvent}{wxcommandevent}\\
	23	\helpref{wxEvent}{wxevent}\\
	24	\helpref{wxObject}{wxobject}
	25
	26	\wxheading{Include files}
	27
	28	<wx/notebook.h>
	29
	30	\input noteevt.inc
	31
	32	\wxheading{See also}
	33
	34	\helpref{wxNotebook}{wxnotebook}, \helpref{wxTabCtrl}{wxtabctrl}, \helpref{wxTabEvent}{wxtabevent}
	35
	36	\latexignore{\rtfignore{\wxheading{Members}}}
	37
	38	\membersection{wxNotebookEvent::wxNotebookEvent}\label{wxnotebookeventconstr}
	39
	40	\func{}{wxNotebookEvent}{\param{wxEventType}{ eventType = wxEVT\_NULL},
	41	\param{int}{ id = 0}, \param{int}{ sel = $-1$}, \param{int}{ oldSel = $-1$}}
	42
	43	Constructor (used internally by wxWindows only).
	44
	45	\membersection{wxNotebookEvent::GetOldSelection}\label{wxnotebookeventgetoldselection}
	46
	47	\constfunc{int}{GetOldSelection}{\void}
	48
	49	Returns the page that was selected before the change, $-1$ if none was selected.
	50
	51	\membersection{wxNotebookEvent::GetSelection}\label{wxnotebookeventgetselection}
	52
	53	\constfunc{int}{GetSelection}{\void}
	54
	55	Returns the currently selected page, or $-1$ if none was selected.
	56
	57	{\bf NB:} under Windows, GetSelection() will return the same value as\rtfsp
	58	\helpref{GetOldSelection()}{wxnotebookeventgetoldselection} when called from
	59	{\tt EVT\_NOTEBOOK\_PAGE\_CHANGING} handler and not the page which is going to
	60	be selected.
	61
	62	\membersection{wxNotebookEvent::SetOldSelection}\label{wxnotebookeventsetoldselection}
	63
	64	\func{void}{SetOldSelection}{\param{int}{ page}}
	65
	66	Sets the id of the page selected before the change.
	67
	68	\membersection{wxNotebookEvent::SetSelection}\label{wxnotebookeventsetselection}
	69
	70	\func{void}{SetSelection}{\param{int}{ page}}
	71
	72	Sets the selection member variable.
	73
	74	\wxheading{See also}
	75
	76	\helpref{wxNotebookEvent::GetSelection}{wxnotebookeventgetselection}
	77
	78