qmetaproperty.3qt

Trolltech公司发布的基于C++图形开发环境

'\" t
.TH QMetaProperty 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
QMetaProperty \- Stores meta data about a property
.br
.PP
\fC#include <qmetaobject.h>\fR
.PP
.SS "Public Members"
.in +1c
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.BI "\fBQMetaProperty\fR () (internal)"
.br
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.BI "\fB~QMetaProperty\fR () (internal)"
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.BI "const char* \fBtype\fR () const"
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.BI "const char* \fBname\fR () const"
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.BI "bool \fBwritable\fR () const"
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.BI "bool \fBwriteable\fR () const"
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.BI "bool \fBisValid\fR () const (internal)"
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.BI "bool \fBisSetType\fR () const"
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.BI "bool \fBisEnumType\fR () const"
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.BI "QStrList \fBenumKeys\fR () const"
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.BI "int \fBkeyToValue\fR ( const char * key ) const"
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.BI "const char* \fBvalueToKey\fR ( int value ) const"
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.BI "int \fBkeysToValue\fR ( const QStrList & keys ) const"
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.BI "QStrList \fBvalueToKeys\fR ( int value ) const"
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.BI "bool \fBstored\fR ( QObject * ) const"
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.BI "bool \fBdesignable\fR () const"
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.BI "enum \fBSpecification\fR { Unspecified, Class, Reference, Pointer, ConstCharStar }"
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.BI "enum \fBFlags\fR { UnresolvedEnum = 0x00000001, UnresolvedSet = 0x00000002, UnresolvedEnumOrSet = 0x00000004, UnresolvedStored = 0x00000008, UnresolvedDesignable = 0x00000010, NotDesignable = 0x00000020, NotStored = 0x00000040, StdSet = 0x00000080 }"
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.BI "bool \fBtestFlags\fR ( uint f ) const"
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.BI "void \fBsetFlags\fR ( uint f ) "
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.BI "void \fBclearFlags\fR ( uint f ) "
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.SH DESCRIPTION
The QMetaProperty class stores meta data about a property.
.PP
Property meta data mainly consists of a type(), a name() and the fact, whether a property is writable(), designable() or stored().
.PP
The functions isSetType(), isEnumType() and enumKeys() provide further information about a property's type. The conversion functions keyToValue(), valueToKey(), keysToValue() and valueToKeys() allow to convert between the integer representation of an enumeration or set value and its literal representation.
.PP
Actual property values are set and received through QObject's set and get functions. See QObject::setProperty() and QObject::property() for details.
.PP
You receive meta property data through an object's meta object. See QMetaObject::property() and QMetaObject::propertyNames() for details.
.SS "Member Type Documentation"
.SH "QMetaProperty::Flags"
For internal use only.
.SH "QMetaProperty::Specification"
For internal use only.
.SH MEMBER FUNCTION DOCUMENTATION
.SH "void QMetaProperty::clearFlags ( uint f )"
For internal use only.
.SH "bool QMetaProperty::designable () const"
Returns whether the property is considered to be designable or not.
.SH "QStrList QMetaProperty::enumKeys () const"
Returns the possible enumeration keys if this property is an enumeration type (or a set type).
.PP
See also isEnumType().
.SH "bool QMetaProperty::isEnumType () const"
Returns whether the property's type is an enumeration value.
.PP
See also isSetType() and enumKeys().
.SH "bool QMetaProperty::isSetType () const"
Returns whether the property's type is an enumeration value that is used as set, i.e. the enumeration values can be or'ed together. A set type is implicitely also an enum type.
.PP
See also isEnumType() and enumKeys().
.SH "int QMetaProperty::keyToValue ( const char * key ) const"
Converts the enumeration key \fIkey\fR to its integer value.
.PP
For set types, use keysToValue().
.PP
See also valueToKey(), isSetType() and keysToValue().
.SH "int QMetaProperty::keysToValue ( const QStrList & keys ) const"
Converts the list of keys \fIkeys\fR to their combined integer value.
.PP
See also isSetType(), valueToKey() and keysToValue().
.SH "const char* QMetaProperty::name () const"
Returns the name of the property.
.SH "void QMetaProperty::setFlags ( uint f )"
For internal use only.
.SH "bool QMetaProperty::stored ( QObject * o ) const"
Returns whether the property shall be stored for object \fIo\fR or not.
.SH "bool QMetaProperty::testFlags ( uint f ) const"
For internal use only.
.SH "const char* QMetaProperty::type () const"
Returns the type of the property.
.SH "const char* QMetaProperty::valueToKey ( int value ) const"
Converts the enumeration value \fIvalue\fR to its literal key.
.PP
For set types, use valueToKeys().
.PP
See also valueToKey(), isSetType() and valueToKeys().
.SH "QStrList QMetaProperty::valueToKeys ( int value ) const"
Converts the set value \fIvalue\fR to a list of keys.
.PP
See also isSetType(), valueToKey() and valueToKeys().
.SH "bool QMetaProperty::writable () const"
Returns whether the property is writable or not.
.PP
See also isValid().
.SH "QMetaProperty::QMetaProperty ()"
For internal use only.
.SH "QMetaProperty::~QMetaProperty ()"
For internal use only.
.SH "bool QMetaProperty::isValid () const"
For internal use only.
.SH "SEE ALSO"
.BR http://doc.trolltech.com/qmetaproperty.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 (qmetaproperty.3qt) and the Qt
version (2.3.10).