<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >Data I pass to the delete_event (or other event) handler gets corrupted.</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="GTK+ FAQ" HREF="book1.html"><LINK REL="UP" TITLE="Development with GTK+: general questions" HREF="c466.html"><LINK REL="PREVIOUS" TITLE="By the way, what are the differences between signals and events?" HREF="x546.html"><LINK REL="NEXT" TITLE="I have my signal connected to the the (whatever) event, but it seems I don't catch it. What's wrong?" HREF="x563.html"></HEAD ><BODY CLASS="SECT1" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >GTK+ FAQ</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="x546.html" ACCESSKEY="P" ><<< Previous</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Development with GTK+: general questions</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="x563.html" ACCESSKEY="N" >Next >>></A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="AEN557" >Data I pass to the <TT CLASS="LITERAL" >delete_event</TT > (or other event) handler gets corrupted.</A ></H1 ><P >All event handlers take an additional argument which contains information about the event that triggered the handler. So, a <TT CLASS="LITERAL" >delete_event</TT > handler must be declared as:</P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" WIDTH="100%" ><TR ><TD ><PRE CLASS="PROGRAMLISTING" >gint delete_event_handler (GtkWidget *widget, GdkEventAny *event, gpointer data);</PRE ></TD ></TR ></TABLE ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="x546.html" ACCESSKEY="P" ><<< Previous</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="book1.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="x563.html" ACCESSKEY="N" >Next >>></A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >By the way, what are the differences between signals and events?</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="c466.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >I have my signal connected to the the (whatever) event, but it seems I don't catch it. What's wrong?</TD ></TR ></TABLE ></DIV ></BODY ></HTML >