[gtkmm-documentation] Completed _WRAP_SIGNAL and _WRAP_VFUNC documentation.

[Marcin Kolny <mkolny src gnome org>]

commit cc0551d5693d856db04e4d7c9023e1647446fab2
Author: Marcin Kolny <marcin kolny gmail com>
Date:   Sat Sep 6 23:57:37 2014 +0200

    Completed _WRAP_SIGNAL and _WRAP_VFUNC documentation.
    
            * docs/tutorial/C/index-in.docbook: added info about return_value
              and exception_handler arguments.

 docs/tutorial/C/index-in.docbook |   18 ++++++++++++++++++
 1 files changed, 18 insertions(+), 0 deletions(-)
---
diff --git a/docs/tutorial/C/index-in.docbook b/docs/tutorial/C/index-in.docbook
index ad511a1..de630af 100644
--- a/docs/tutorial/C/index-in.docbook
+++ b/docs/tutorial/C/index-in.docbook
@@ -9436,6 +9436,12 @@ _WRAP_SIGNAL(void clicked(),"clicked")
             <para>Puts the generated code in #ifdef blocks.</para>
         </listitem>
     </varlistentry>
+    <varlistentry>
+        <term>exception_handler</term>
+             <listitem>
+               <para>Allows to use custom exception handler instead of default one. Exception might be 
rethrown by user-defined handler, and it will be catched by default handler.</para>
+             </listitem>
+    </varlistentry>
 </variablelist>
 </para>
 </sect3>
@@ -9546,6 +9552,18 @@ _WRAP_VFUNC(SizeRequestMode get_request_mode() const, get_request_mode)
             <literal>slot_callbback</literal> options respectively.</para>
         </listitem>
     </varlistentry>
+    <varlistentry>
+        <term>return_value</term>
+             <listitem>
+               <para>Defines non-default return value.</para>
+             </listitem>
+    </varlistentry>
+    <varlistentry>
+        <term>exception_handler</term>
+             <listitem>
+               <para>Allows to use custom exception handler instead of default one. Exception might be 
rethrown by user-defined handler, and it will be catched by default handler.</para>
+             </listitem>
+    </varlistentry>
 </variablelist>
 </para>
 <para>A rule to which there may be exceptions: If the virtual C function returns