create a separate category for the conversion classes

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@53883 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/doxygen/groups/class_conv.h

@@ -0,0 +1,17 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        class_conv.h
+// Purpose:     Conversion classes group docs
+// Author:      wxWidgets team
+// RCS-ID:      $Id$
+// Licence:     wxWindows license
+/////////////////////////////////////////////////////////////////////////////
+
+/**
+
+@defgroup group_class_conv Text Conversion
+@ingroup group_class
+
+These are the classes used for conversions between different text encodings.
+
+*/
+

docs/doxygen/mainpages/cat_classes.h

@@ -44,6 +44,7 @@ This page contains a summarized listing of classes, please see the
 @li @ref page_class_cat_logging
 @li @ref page_class_cat_threading
 @li @ref page_class_cat_data
+@li @ref page_class_cat_conv
 @li @ref page_class_cat_containers
 @li @ref page_class_cat_smartpointers
 @li @ref page_class_cat_file
@@ -657,6 +658,23 @@ These are the data structure classes supported by wxWidgets.
 
 
 
+@section page_class_cat_conv Text Conversion
+
+These classes define objects for performing conversions between different
+multibyte and Unicode encodings and wide character strings.
+
+@li wxMBConv: Base class for all convertors, defines the API implemented by all
+    the other convertor classes.
+@li wxMBConvUTF7: Convertor for UTF-7
+@li wxMBConvUTF8: Convertor for UTF-8
+@li wxMBConvUTF16: Convertor for UTF-16
+@li wxMBConvUTF32: Convertor for UTF-32
+@li wxCSConv: Convertor for any system-supported encoding which can be
+    specified by name.
+
+Related Overviews: @ref overview_mbconv
+
+
 @section page_class_cat_containers Containers
 
 These are classes, templates and class macros are used by wxWidgets. Most of