1QDoubleValidator(3qt) QDoubleValidator(3qt)
2
6 QDoubleValidator - Range checking of floating-point numbers
7
9 #include <qvalidator.h>
10 Inherits QValidator.
12 Public Members
14 QDoubleValidator ( QObject * parent, const char * name = 0 )
15 QDoubleValidator ( double bottom, double top, int decimals, QObject *
16 parent, const char * name = 0 )
17 ~QDoubleValidator ()
18 virtual QValidator::State validate ( QString & input, int & ) const
19 virtual void setRange ( double minimum, double maximum, int decimals =
20 0 )
21 void setBottom ( double )
22 void setTop ( double )
23 void setDecimals ( int )
24 double bottom () const
25 double top () const
26 int decimals () const
27 Properties
29 double bottom - the validator's minimum acceptable value
30 int decimals - the validator's maximum number of digits after the
31 decimal point
32 double top - the validator's maximum acceptable value
33
35 The QDoubleValidator class provides range checking of floating-point
36 numbers.
37 QDoubleValidator provides an upper bound, a lower bound and a limit on
39 the number of digits after the decimal point. It does not provide a
40 fixup() function.
41 You can set the acceptable range in one call with setRange(), or with
43 setBottom() and setTop(). Set the number of decimal places with
44 setDecimals(). The validate() function returns the validation state.
45 See also QIntValidator, QRegExpValidator, and Miscellaneous Classes.
47
50 Constructs a validator object with parent parent, called name, which
52 accepts any double.
53
55 QObject * parent, const char * name = 0 )
56 Constructs a validator object with parent parent, called name. This
57 validator will accept doubles from bottom to top inclusive, with up to
58 decimals digits after the decimal point.
59
61 Destroys the validator, freeing any resources used.
62
64 Returns the validator's minimum acceptable value. See the "bottom"
65 property for details.
66
68 Returns the validator's maximum number of digits after the decimal
69 point. See the "decimals" property for details.
70
72 Sets the validator's minimum acceptable value. See the "bottom"
73 property for details.
74
76 Sets the validator's maximum number of digits after the decimal point.
77 See the "decimals" property for details.
78
80 = 0 ) [virtual]
81 Sets the validator to accept doubles from minimum to maximum inclusive,
82 with at most decimals digits after the decimal point.
83
85 Sets the validator's maximum acceptable value. See the "top" property
86 for details.
87
89 Returns the validator's maximum acceptable value. See the "top"
90 property for details.
91
93 [virtual]
94 Returns Acceptable if the string input contains a double that is within
95 the valid range and is in the correct format.
96 Returns Intermediate if input contains a double that is outside the
98 range or is in the wrong format, e.g. with too many digits after the
99 decimal point or is empty.
100 Returns Invalid if the input is not a double.
102 Note: If the valid range consists of just positive doubles (e.g. 0.0 -
104 100.0) and input is a negative double then Invalid is returned.
105 Reimplemented from QValidator.
107 Property Documentation
110 This property holds the validator's minimum acceptable value.
111 Set this property's value with setBottom() and get this property's
113 value with bottom().
114 See also setRange().
116
118 This property holds the validator's maximum number of digits after the
119 decimal point.
120 Set this property's value with setDecimals() and get this property's
122 value with decimals().
123 See also setRange().
125
127 This property holds the validator's maximum acceptable value.
128 Set this property's value with setTop() and get this property's value
130 with top().
131 See also setRange().
133
136 http://doc.trolltech.com/qdoublevalidator.html
137 http://www.trolltech.com/faq/tech.html
138
140 Copyright 1992-2007 Trolltech ASA, http://www.trolltech.com. See the
141 license file included in the distribution for a complete license
142 statement.
143
145 Generated automatically from the source code.
146
148 If you find a bug in Qt, please report it as described in
149 http://doc.trolltech.com/bughowto.html. Good bug reports help us to
150 help you. Thank you.
151 The definitive Qt documentation is provided in HTML format; it is
153 located at $QTDIR/doc/html and can be read using Qt Assistant or with a
154 web browser. This man page is provided as a convenience for those users
155 who prefer man pages, although this format is not officially supported
156 by Trolltech.
157 If you find errors in this manual page, please report them to qt-
159 bugs@trolltech.com. Please include the name of the manual page
160 (qdoublevalidator.3qt) and the Qt version (3.3.8).
161Trolltech AS 2 February 2007 QDoubleValidator(3qt)