qdoublevalidator.3qt

Trolltech公司发布的基于C++图形开发环境

'\" t
.TH QDoubleValidator 3qt "24 January 2005" "Trolltech AS" \" -*- nroff -*-
.\" Copyright 1992-2001 Trolltech AS.  All rights reserved.  See the
.\" license file included in the distribution for a complete license
.\" statement.
.\"
.ad l
.nh
.SH NAME
QDoubleValidator \- Range checking of floating-point numbers
.br
.PP
\fC#include <qvalidator.h>\fR
.PP
Inherits QValidator.
.PP
.SS "Public Members"
.in +1c
.ti -1c
.BI "\fBQDoubleValidator\fR ( QWidget * " "parent" ", const char * " "name" " = 0 ) "
.br
.ti -1c
.BI "\fBQDoubleValidator\fR ( double " "bottom" ", double " "top" ", int " "decimals" ", QWidget * " "parent" ", const char * " "name" " = 0 ) "
.br
.ti -1c
.BI "\fB~QDoubleValidator\fR () "
.br
.ti -1c
.BI "QValidator::State \fBvalidate\fR ( QString &, int & ) const"
.br
.ti -1c
.BI "virtual void \fBsetRange\fR ( double " "bottom" ", double " "top" ", int " "decimals" " = 0 ) "
.br
.ti -1c
.BI "void \fBsetBottom\fR ( double ) "
.br
.ti -1c
.BI "void \fBsetTop\fR ( double ) "
.br
.ti -1c
.BI "void \fBsetDecimals\fR ( int ) "
.br
.ti -1c
.BI "double \fBbottom\fR () const"
.br
.ti -1c
.BI "double \fBtop\fR () const"
.br
.ti -1c
.BI "int \fBdecimals\fR () const"
.br
.in -1c
.SS "Properties"
.nf
.TS
l l l l l
- - - - -
l l l l l.
Type	Name	READ	WRITE	Options
double	bottom	bottom	setBottom
double	top	top	setTop
int	decimals	decimals	setDecimals
.TE
.fi

.SH DESCRIPTION
The QDoubleValidator class provides range checking of floating-point numbers.
.PP
QDoubleValidator provides an upper bound, a lower bound, and a limit on the number of digits after the decimal point. It does not provide a fixup() function.
.PP
See also QIntValidator.
.SH MEMBER FUNCTION DOCUMENTATION
.SH "QDoubleValidator::QDoubleValidator ( QWidget * parent, const char * name = 0 )"
Constructs a validator object which accepts all doubles.
.SH "QDoubleValidator::QDoubleValidator ( double bottom, double top, int decimals, QWidget * parent, const char * name = 0 )"
Constructs a validator object which accepts all doubles from \fIbottom\fR up to and including \fItop\fR with at most \fIdecimals\fR digits after the decimal point.
.SH "QDoubleValidator::~QDoubleValidator ()"
Destroys the validator, freeing any storage and other resources used.
.SH "double QDoubleValidator::bottom () const"
Returns the lowest valid number according to this validator.
.PP
See also top(), decimals() and setRange().
.SH "int QDoubleValidator::decimals () const"
Returns the largest number of digits a valid number can have after its decimal point.
.PP
See also bottom(), top() and setRange().
.SH "void QDoubleValidator::setBottom ( double bottom )"
Sets the validator to accept no numbers smaller than \fIbottom.\fR
.PP
See also setRange().
.SH "void QDoubleValidator::setDecimals ( int decimals )"
Sets the maximum number of digits after the decimal point.
.SH "void QDoubleValidator::setRange ( double bottom, double top, int decimals = 0 ) \fC[virtual]\fR"
Sets the validator to accept numbers from \fIbottom\fR up to and including \fItop\fR with at most \fIdecimals\fR digits after the decimal point.
.SH "void QDoubleValidator::setTop ( double top )"
Sets the validator to accept no numbers bigger than \fItop.\fR
.PP
See also setRange().
.SH "double QDoubleValidator::top () const"
Returns the highest valid number according to this validator.
.PP
See also bottom(), decimals() and setRange().
.SH "QValidator::State QDoubleValidator::validate( QString & input, int & ) const"
Returns \fIAcceptable\fR if \fIinput\fR contains a number in the legal
range and format, \fIIntermediate\fR if it contains another number, a
number with too many digits after the decimal point or is empty, and
\fIInvalid\fR if \fIinput\fR is not a number.
.SH "SEE ALSO"
.BR http://doc.trolltech.com/qdoublevalidator.html
.BR http://www.trolltech.com/faq/tech.html
.SH COPYRIGHT
Copyright 1992-2001 Trolltech AS, http://www.trolltech.com.  See the
license file included in the distribution for a complete license
statement.
.SH AUTHOR
Generated automatically from the source code.
.SH BUGS
If you find a bug in Qt, please report it as described in
.BR http://doc.trolltech.com/bughowto.html .
Good bug reports make our job much simpler. Thank you.
.P
In case of content or formattting problems with this manual page, please
report them to
.BR [e-mail] .
Please include the name of the manual page (qdoublevalidator.3qt) and the Qt
version (2.3.10).