move pages under 'mainpages' and also adopt new link anchor naming and use @itemdef instead of \twocolitem tag

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@51975 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/doxygen/mainpages/const_keymod.h

@@ -0,0 +1,42 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        keymod.h
+// Purpose:     key modifiers
+// Author:      wxWidgets team
+// RCS-ID:      $Id$
+// Licence:     wxWindows license
+/////////////////////////////////////////////////////////////////////////////
+
+
+/*!
+
+ @page page_keymodifiers Key Modifiers
+ 
+ @header{wx/defs.h}
+ 
+ The following key modifier constants are defined:
+ 
+ @verbatim
+     enum wxKeyModifier
+     {
+         wxMOD_NONE      = 0x0000,
+         wxMOD_ALT       = 0x0001,
+         wxMOD_CONTROL   = 0x0002,
+         wxMOD_ALTGR     = wxMOD_ALT | wxMOD_CONTROL,
+         wxMOD_SHIFT     = 0x0004,
+         wxMOD_META      = 0x0008,
+     #if defined(__WXMAC__) || defined(__WXCOCOA__)
+         wxMOD_CMD       = wxMOD_META,
+     #else
+         wxMOD_CMD       = wxMOD_CONTROL,
+     #endif
+         wxMOD_ALL       = 0xffff
+     };
+ @endverbatim
+ 
+ Notice that @c wxMOD_CMD should be used instead of @c wxMOD_CONTROL 
+ in portable code to account for the fact that although 
+ @c Control modifier exists under Mac OS, it is not used for the same
+ purpose as under Windows or Unix there while the special Mac-specific 
+ @c Command modifier is used in exactly the same way.
+
+*/