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	1	\section{\class{wxValidator}}\label{wxvalidator}
	2
	3	wxValidator is the base class for a family of validator classes that mediate
	4	between a class of control, and application data.
	5
	6	A validator has three major roles:
	7
	8	\begin{enumerate}\itemsep=0pt
	9	\item to transfer data from a C++ variable or own storage to and from a control;
	10	\item to validate data in a control, and show an appropriate error message;
	11	\item to filter events (such as keystrokes), thereby changing the behaviour of the
	12	associated control.
	13	\end{enumerate}
	14
	15	Validators can be plugged into controls dynamically.
	16
	17	To specify a default, `null' validator, use the symbol {\bf wxDefaultValidator}.
	18
	19	For more information, please see \helpref{Validator overview}{validatoroverview}.
	20
	21	\pythonnote{If you wish to create a validator class in wxPython you should
	22	derive the class from {\tt wxPyValidator} in order to get Python-aware
	23	capabilities for the various virtual methods.}
	24
	25	\wxheading{Derived from}
	26
	27	\helpref{wxEvtHandler}{wxevthandler}\\
	28	\helpref{wxObject}{wxobject}
	29
	30	\wxheading{Include files}
	31
	32	<wx/validate.h>
	33
	34	\wxheading{See also}
	35
	36	\helpref{Validator overview}{validatoroverview},
	37	\helpref{wxTextValidator}{wxtextvalidator},
	38	\helpref{wxGenericValidator}{wxgenericvalidator},
	39
	40	\latexignore{\rtfignore{\wxheading{Members}}}
	41
	42	\membersection{wxValidator::wxValidator}\label{wxvalidatorconstr}
	43
	44	\func{}{wxValidator}{\void}
	45
	46	Constructor.
	47
	48	\membersection{wxValidator::\destruct{wxValidator}}
	49
	50	\func{}{\destruct{wxValidator}}{\void}
	51
	52	Destructor.
	53
	54	\membersection{wxValidator::Clone}\label{wxvalidatorclone}
	55
	56	\constfunc{virtual wxObject*}{Clone}{\void}
	57
	58	All validator classes must implement the {\bf Clone} function, which returns
	59	an identical copy of itself. This is because validators are passed to control
	60	constructors as references which must be copied. Unlike objects such as pens
	61	and brushes, it does not make sense to have a reference counting scheme
	62	to do this cloning, because all validators should have separate
	63	data.
	64
	65	This base function returns NULL.
	66
	67	\membersection{wxValidator::GetWindow}\label{wxvalidatorgetwindow}
	68
	69	\constfunc{wxWindow*}{GetWindow}{\void}
	70
	71	Returns the window associated with the validator.
	72
	73	\membersection{wxValidator::SetBellOnError}{wxvalidatorsetbellonerror}
	74
	75	\func{void}{SetBellOnError}{\param{bool}{ doIt = true}}
	76
	77	This functions switches on or turns off the error sound produced by the
	78	validators if an invalid key is pressed.
	79
	80	\membersection{wxValidator::SetWindow}\label{wxvalidatorsetwindow}
	81
	82	\func{void}{SetWindow}{\param{wxWindow*}{ window}}
	83
	84	Associates a window with the validator.
	85
	86	\membersection{wxValidator::TransferFromWindow}\label{wxvalidatortransferfromwindow}
	87
	88	\func{virtual bool}{TransferToWindow}{}
	89
	90	This overridable function is called when the value in the window must be
	91	transferred to the validator. Return false if there is a problem.
	92
	93	\membersection{wxValidator::TransferToWindow}\label{wxvalidatortransfertowindow}
	94
	95	\func{virtual bool}{TransferToWindow}{}
	96
	97	This overridable function is called when the value associated with the validator must be
	98	transferred to the window. Return false if there is a problem.
	99
	100	\membersection{wxValidator::Validate}\label{wxvalidatorvalidate}
	101
	102	\func{virtual bool}{Validate}{\param{wxWindow*}{ parent}}
	103
	104	This overridable function is called when the value in the associated window must be validated.
	105	Return false if the value in the window is not valid; you may pop up an error dialog.
	106