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<HTML><HEAD><TITLE>GtkData</TITLE><METANAME="GENERATOR"CONTENT="Modular DocBook HTML Stylesheet Version 1.61"><LINKREL="HOME"TITLE="GTK+ Reference Manual"HREF="index.html"><LINKREL="UP"TITLE="GTK+ Widgets and Objects"HREF="gtkobjects.html"><LINKREL="PREVIOUS"TITLE="GtkCurve"HREF="gtkcurve.html"><LINKREL="NEXT"TITLE="GtkDialog"HREF="gtkdialog.html"></HEAD><BODYCLASS="REFENTRY"BGCOLOR="#FFFFFF"TEXT="#000000"LINK="#0000FF"VLINK="#840084"ALINK="#0000FF"><DIVCLASS="NAVHEADER"><TABLEWIDTH="100%"BORDER="0"BGCOLOR="#000000"CELLPADDING="1"CELLSPACING="0"><TR><THCOLSPAN="4"ALIGN="center"><FONTCOLOR="#FFFFFF"SIZE="5">GTK+ Reference Manual</FONT></TH></TR><TR><TDWIDTH="25%"BGCOLOR="#C00000"ALIGN="left"><AHREF="gtkcurve.html"><FONTCOLOR="#FFFFFF"SIZE="3"><B><<< Previous Page</B></FONT></A></TD><TDWIDTH="25%"BGCOLOR="#0000C0"ALIGN="center"><FONTCOLOR="#FFFFFF"SIZE="3"><B><AHREF="index.html"><FONTCOLOR="#FFFFFF"SIZE="3"><B>Home</B></FONT></A></B></FONT></TD><TDWIDTH="25%"BGCOLOR="#00C000"ALIGN="center"><FONTCOLOR="#FFFFFF"SIZE="3"><B><AHREF="gtkobjects.html"><FONTCOLOR="#FFFFFF"SIZE="3"><B>Up</B></FONT></A></B></FONT></TD><TDWIDTH="25%"BGCOLOR="#C00000"ALIGN="right"><AHREF="gtkdialog.html"><FONTCOLOR="#FFFFFF"SIZE="3"><B>Next Page >>></B></FONT></A></TD></TR></TABLE></DIV><H1><ANAME="GTKDATA">GtkData</A></H1><DIVCLASS="REFNAMEDIV"><ANAME="AEN24114"></A><H2>Name</H2>GtkData -- abstract base class for objects containing data.</DIV><DIVCLASS="REFSYNOPSISDIV"><ANAME="AEN24117"></A><H2>Synopsis</H2><TABLEBORDER="0"BGCOLOR="#D6E8FF"WIDTH="100%"CELLPADDING="6"><TR><TD><PRECLASS="SYNOPSIS"> #include <gtk/gtk.h>struct <AHREF="gtkdata.html#GTKDATA-STRUCT">GtkData</A>; </PRE></TD></TR></TABLE></DIV><DIVCLASS="REFSECT1"><ANAME="AEN24121"></A><H2>Object Hierarchy</H2><TABLEBORDER="0"BGCOLOR="#D6E8FF"WIDTH="100%"CELLPADDING="6"><TR><TD><PRECLASS="SYNOPSIS"> <AHREF="gtkobject.html">GtkObject</A> +----GtkData</PRE></TD></TR></TABLE></DIV><DIVCLASS="REFSECT1"><ANAME="AEN24125"></A><H2>Signal Prototypes</H2><TABLEBORDER="0"BGCOLOR="#D6E8FF"WIDTH="100%"CELLPADDING="6"><TR><TD><PRECLASS="SYNOPSIS"> "<AHREF="gtkdata.html#GTKDATA-DISCONNECT">disconnect</A>" void user_function (<AHREF="gtkdata.html">GtkData</A> *data, <AHREF=../glib/glib-basic-types.html#GPOINTER>gpointer</A> user_data);</PRE></TD></TR></TABLE></DIV><DIVCLASS="REFSECT1"><ANAME="AEN24131"></A><H2>Description</H2><P>The <AHREF="gtkdata.html">GtkData</A> object is a very simple object intended to be used as a baseclass for objects which contain data (i.e. the 'Model' in the object-orientedModel/View/Controller framework).</P><P>Currently it is not very useful since all it provides is a "disconnect" signal.This signal could be emitted by a <AHREF="gtkdata.html">GtkData</A> subclass to notify any 'Views'that they should disconnect from the <AHREF="gtkdata.html">GtkData</A> (the 'Model'), possibly justbefore the <AHREF="gtkdata.html">GtkData</A> is destroyed.</P></DIV><DIVCLASS="REFSECT1"><ANAME="AEN24139"></A><H2>Details</H2><DIVCLASS="REFSECT2"><ANAME="AEN24141"></A><H3><ANAME="GTKDATA-STRUCT"></A>struct GtkData</H3><TABLEBORDER="0"BGCOLOR="#D6E8FF"WIDTH="100%"CELLPADDING="6"><TR><TD><PRECLASS="PROGRAMLISTING">struct GtkData;</PRE></TD></TR></TABLE><P>The <AHREF="gtkdata.html#GTKDATA-STRUCT">GtkData</A> struct contains no public fields.</P></DIV></DIV><DIVCLASS="REFSECT1"><ANAME="AEN24147"></A><H2>Signals</H2><DIVCLASS="REFSECT2"><ANAME="AEN24149"></A><H3><ANAME="GTKDATA-DISCONNECT"></A>The "disconnect" signal</H3><TABLEBORDER="0"BGCOLOR="#D6E8FF"WIDTH="100%"CELLPADDING="6"><TR><TD><PRECLASS="PROGRAMLISTING">void user_function (<AHREF="gtkdata.html">GtkData</A> *data, <AHREF=../glib/glib-basic-types.html#GPOINTER>gpointer</A> user_data);</PRE></TD></TR></TABLE><P>Emitted to notify any views on the <AHREF="gtkdata.html">GtkData</A> object to disconnect from it,possibly because the <AHREF="gtkdata.html">GtkData</A> object is about to be destroyed.</P><DIVCLASS="INFORMALTABLE"><ANAME="AEN24158"></A><P></P><TABLEBORDER="0"WIDTH="100%"BGCOLOR="#FFD0D0"CELLSPACING="0"CELLPADDING="4"CLASS="CALSTABLE"><TBODY><TR><TDWIDTH="20%"ALIGN="RIGHT"VALIGN="TOP"><TTCLASS="PARAMETER"><I>data</I></TT> :</TD><TDWIDTH="80%"ALIGN="LEFT"VALIGN="TOP">the object which received the signal. </TD></TR><TR><TDWIDTH="20%"ALIGN="RIGHT"VALIGN="TOP"><TTCLASS="PARAMETER"><I>user_data</I></TT> :</TD><TDWIDTH="80%"ALIGN="LEFT"VALIGN="TOP">user data set when the signal handler was connected.</TD></TR></TBODY></TABLE><P></P></DIV></DIV></DIV><DIVCLASS="NAVFOOTER"><BRCLEAR="all"><BR><TABLEWIDTH="100%"BORDER="0"BGCOLOR="#000000"CELLPADDING="1"CELLSPACING="0"><TR><TDWIDTH="25%"BGCOLOR="#C00000"ALIGN="left"><AHREF="gtkcurve.html"><FONTCOLOR="#FFFFFF"SIZE="3"><B><<< Previous Page</B></FONT></A></TD><TDWIDTH="25%"BGCOLOR="#0000C0"ALIGN="center"><FONTCOLOR="#FFFFFF"SIZE="3"><B><AHREF="index.html"><FONTCOLOR="#FFFFFF"SIZE="3"><B>Home</B></FONT></A></B></FONT></TD><TDWIDTH="25%"BGCOLOR="#00C000"ALIGN="center"><FONTCOLOR="#FFFFFF"SIZE="3"><B><AHREF="gtkobjects.html"><FONTCOLOR="#FFFFFF"SIZE="3"><B>Up</B></FONT></A></B></FONT></TD><TDWIDTH="25%"BGCOLOR="#C00000"ALIGN="right"><AHREF="gtkdialog.html"><FONTCOLOR="#FFFFFF"SIZE="3"><B>Next Page >>></B></FONT></A></TD></TR><TR><TDCOLSPAN="2"ALIGN="left"><FONTCOLOR="#FFFFFF"SIZE="3"><B>GtkCurve</B></FONT></TD><TDCOLSPAN="2"ALIGN="right"><FONTCOLOR="#FFFFFF"SIZE="3"><B>GtkDialog</B></FONT></TD></TR></TABLE></DIV></BODY></HTML>⌨️ 快捷键说明
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