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+'\" t
+.TH QSignal 3qt "2 February 2007" "Trolltech AS" \" -*- nroff -*-
+.\" Copyright 1992-2007 Trolltech ASA.  All rights reserved.  See the
+.\" license file included in the distribution for a complete license
+.\" statement.
+.\"
+.ad l
+.nh
+.SH NAME
+QSignal \- Can be used to send signals for classes that don't inherit QObject
+.SH SYNOPSIS
+\fC#include <qsignal.h>\fR
+.PP
+Inherits QObject.
+.PP
+.SS "Public Members"
+.in +1c
+.ti -1c
+.BI "\fBQSignal\fR ( QObject * parent = 0, const char * name = 0 )"
+.br
+.ti -1c
+.BI "\fB~QSignal\fR ()"
+.br
+.ti -1c
+.BI "bool \fBconnect\fR ( const QObject * receiver, const char * member )"
+.br
+.ti -1c
+.BI "bool \fBdisconnect\fR ( const QObject * receiver, const char * member = 0 )"
+.br
+.ti -1c
+.BI "void \fBactivate\fR ()"
+.br
+.ti -1c
+.BI "bool isBlocked () const  \fI(obsolete)\fR"
+.br
+.ti -1c
+.BI "void block ( bool b )  \fI(obsolete)\fR"
+.br
+.ti -1c
+.BI "void setParameter ( int value )  \fI(obsolete)\fR"
+.br
+.ti -1c
+.BI "int parameter () const  \fI(obsolete)\fR"
+.br
+.ti -1c
+.BI "void \fBsetValue\fR ( const QVariant & value )"
+.br
+.ti -1c
+.BI "QVariant \fBvalue\fR () const"
+.br
+.in -1c
+.SH DESCRIPTION
+The QSignal class can be used to send signals for classes that don't inherit QObject.
+.PP
+If you want to send signals from a class that does not inherit QObject, you can create an internal QSignal object to emit the signal. You must also provide a function that connects the signal to an outside object slot. This is how we have implemented signals in the QMenuData class, which is not a QObject.
+.PP
+In general, we recommend inheriting QObject instead. QObject provides much more functionality.
+.PP
+You can set a single QVariant parameter for the signal with setValue().
+.PP
+Note that QObject is a \fIprivate\fR base class of QSignal, i.e. you cannot call any QObject member functions from a QSignal object.
+.PP
+Example:
+.PP
+.nf
+.br
+        #include <qsignal.h>
+.br
+.br
+        class MyClass
+.br
+        {
+.br
+        public:
+.br
+            MyClass();
+.br
+            ~MyClass();
+.br
+.br
+            void doSomething();
+.br
+.br
+            void connect( QObject *receiver, const char *member );
+.br
+.br
+        private:
+.br
+            QSignal *sig;
+.br
+        };
+.br
+.br
+        MyClass::MyClass()
+.br
+        {
+.br
+            sig = new QSignal;
+.br
+        }
+.br
+.br
+        MyClass::~MyClass()
+.br
+        {
+.br
+            delete sig;
+.br
+        }
+.br
+.br
+        void MyClass::doSomething()
+.br
+        {
+.br
+            // ... does something
+.br
+            sig->activate(); // emits the signal
+.br
+        }
+.br
+.br
+        void MyClass::connect( QObject *receiver, const char *member )
+.br
+        {
+.br
+            sig->connect( receiver, member );
+.br
+        }
+.br
+.fi
+.PP
+See also Input/Output and Networking and Miscellaneous Classes.
+.SH MEMBER FUNCTION DOCUMENTATION
+.SH "QSignal::QSignal ( QObject * parent = 0, const char * name = 0 )"
+Constructs a signal object called \fIname\fR, with the parent object \fIparent\fR. These arguments are passed directly to QObject.
+.SH "QSignal::~QSignal ()"
+Destroys the signal. All connections are removed, as is the case with all QObjects.
+.SH "void QSignal::activate ()"
+Emits the signal. If the platform supports QVariant and a parameter has been set with setValue(), this value is passed in the signal.
+.SH "void QSignal::block ( bool b )"
+\fBThis function is obsolete.\fR It is provided to keep old source working. We strongly advise against using it in new code.
+.PP
+Blocks the signal if \fIb\fR is TRUE, or unblocks the signal if \fIb\fR is FALSE.
+.PP
+An activated signal disappears into hyperspace if it is blocked.
+.PP
+See also isBlocked(), activate(), and QObject::blockSignals().
+.SH "bool QSignal::connect ( const QObject * receiver, const char * member )"
+Connects the signal to \fImember\fR in object \fIreceiver\fR.
+.PP
+See also disconnect() and QObject::connect().
+.SH "bool QSignal::disconnect ( const QObject * receiver, const char * member = 0 )"
+Disonnects the signal from \fImember\fR in object \fIreceiver\fR.
+.PP
+See also connect() and QObject::disconnect().
+.SH "bool QSignal::isBlocked () const"
+\fBThis function is obsolete.\fR It is provided to keep old source working. We strongly advise against using it in new code.
+.PP
+Returns TRUE if the signal is blocked, or FALSE if it is not blocked.
+.PP
+The signal is not blocked by default.
+.PP
+See also block() and QObject::signalsBlocked().
+.SH "int QSignal::parameter () const"
+\fBThis function is obsolete.\fR It is provided to keep old source working. We strongly advise against using it in new code.
+.SH "void QSignal::setParameter ( int value )"
+\fBThis function is obsolete.\fR It is provided to keep old source working. We strongly advise against using it in new code.
+.SH "void QSignal::setValue ( const QVariant & value )"
+Sets the signal's parameter to \fIvalue\fR
+.SH "QVariant QSignal::value () const"
+Returns the signal's parameter
+
+.SH "SEE ALSO"
+.BR http://doc.trolltech.com/qsignal.html
+.BR http://www.trolltech.com/faq/tech.html
+.SH COPYRIGHT
+Copyright 1992-2007 Trolltech ASA, 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 help us to help you. Thank you.
+.P
+The definitive Qt documentation is provided in HTML format; it is
+located at $QTDIR/doc/html and can be read using Qt Assistant or with
+a web browser. This man page is provided as a convenience for those
+users who prefer man pages, although this format is not officially
+supported by Trolltech. 
+.P
+If you find errors in this manual page, please report them to
+.BR qt-bugs@trolltech.com .
+Please include the name of the manual page (qsignal.3qt) and the Qt
+version (3.3.8).