diff --git a/interface/wx/dc.h b/interface/wx/dc.h
index 565df055bf..170116e68c 100644
--- a/interface/wx/dc.h
+++ b/interface/wx/dc.h
@@ -546,7 +546,7 @@ public:
         Notice that, as with DrawText(), the @a text can contain multiple lines
         separated by the new line (@c '\\n') characters.
 
-        @note Under Win9x only TrueType fonts can be drawn by this function. In
+        @note Under MSW only TrueType fonts can be drawn by this function. In
               particular, a font different from @c wxNORMAL_FONT should be used
               as the latter is not a TrueType font. @c wxSWISS_FONT is an
               example of a font which is.
diff --git a/interface/wx/dirdlg.h b/interface/wx/dirdlg.h
index eab95c8c62..19d9827a9b 100644
--- a/interface/wx/dirdlg.h
+++ b/interface/wx/dirdlg.h
@@ -45,11 +45,11 @@ const char wxDirDialogNameStr[] = "wxDirCtrl";
            user.
     @endStyleTable
 
-    Notice that @c wxRESIZE_BORDER has special side effect under recent (i.e.
-    later than Win9x) Windows where two different directory selection dialogs
-    are available and this style also implicitly selects the new version as the
-    old one always has fixed size. As the new version is almost always
-    preferable, it is recommended that @c wxRESIZE_BORDER style be always used.
+    Notice that @c wxRESIZE_BORDER has special side effect under Windows
+    where two different directory selection dialogs are available and this
+    style also implicitly selects the new version as the old one always has
+    fixed size. As the new version is almost always preferable, it is
+    recommended that @c wxRESIZE_BORDER style be always used.
     This is the case if the dialog is created with the default style value but
     if you need to use any additional styles you should still specify @c
     wxDD_DEFAULT_STYLE unless you explicitly need to use the old dialog version
diff --git a/interface/wx/evtloop.h b/interface/wx/evtloop.h
index 544d577e5c..87750b103d 100644
--- a/interface/wx/evtloop.h
+++ b/interface/wx/evtloop.h
@@ -217,8 +217,8 @@ public:
 
         This can be useful, for example, when a time-consuming process writes to a
         text window. Without an occasional yield, the text window will not be updated
-        properly, and on systems with cooperative multitasking, such as Windows 3.1
-        other processes will not respond.
+        properly, and on systems with cooperative multitasking, other processes
+        will not respond.
 
         Caution should be exercised, however, since yielding may allow the
         user to perform actions which are not compatible with the current task.
diff --git a/interface/wx/filedlg.h b/interface/wx/filedlg.h
index b8ca9451ed..4acb5c6f1a 100644
--- a/interface/wx/filedlg.h
+++ b/interface/wx/filedlg.h
@@ -22,7 +22,7 @@ enum
 /**
     Default wildcard string used in wxFileDialog corresponding to all files.
 
-    It is defined as "*.*" under MSW and OS/2 and "*" everywhere else.
+    It is defined as "*.*" under MSW and "*" everywhere else.
 */
 const char wxFileSelectorDefaultWildcardStr[];
 
diff --git a/interface/wx/filename.h b/interface/wx/filename.h
index c3a88ec494..ce25fbea52 100644
--- a/interface/wx/filename.h
+++ b/interface/wx/filename.h
@@ -814,8 +814,7 @@ public:
      /**
         This function builds a volume path string, for example "C:\\".
 
-        Implemented for the platforms which use drive letters, i.e. DOS, MSW
-        and OS/2 only.
+        Implemented for the platforms which use drive letters, i.e. MSW only.
 
         @since 2.9.0
 
diff --git a/interface/wx/msw/registry.h b/interface/wx/msw/registry.h
index 307819937a..93311b42e0 100644
--- a/interface/wx/msw/registry.h
+++ b/interface/wx/msw/registry.h
@@ -112,7 +112,7 @@ public:
     HKUSR, ///< HKEY_USERS
     HKPD,  ///< HKEY_PERFORMANCE_DATA
     HKCC,  ///< HKEY_CURRENT_CONFIG
-    HKDD,  ///< HKEY_DYN_DATA (Obsolete: Windows 9x only)
+    HKDD,  ///< HKEY_DYN_DATA (Obsolete)
     HKMAX
     };
 
diff --git a/interface/wx/notebook.h b/interface/wx/notebook.h
index 3dc8d44d45..34fb0e7968 100644
--- a/interface/wx/notebook.h
+++ b/interface/wx/notebook.h
@@ -23,7 +23,6 @@ enum
 #define wxNB_FIXEDWIDTH       0x0100
 #define wxNB_MULTILINE        0x0200
 #define wxNB_NOPAGETHEME      0x0400
-#define wxNB_FLAT             0x0800
 
 wxEventType wxEVT_NOTEBOOK_PAGE_CHANGED;
 wxEventType wxEVT_NOTEBOOK_PAGE_CHANGING;
@@ -58,8 +57,6 @@ wxEventType wxEVT_NOTEBOOK_PAGE_CHANGING;
     @style{wxNB_NOPAGETHEME}
            (Windows only) Display a solid colour on notebook pages, and not a
            gradient, which can reduce performance.
-    @style{wxNB_FLAT}
-           (Windows CE only) Show tabs in a flat style.
     @endStyleTable
 
     The styles wxNB_LEFT, RIGHT and BOTTOM are not supported under
diff --git a/interface/wx/pen.h b/interface/wx/pen.h
index 2cfc12f5b9..6d42f19e36 100644
--- a/interface/wx/pen.h
+++ b/interface/wx/pen.h
@@ -171,7 +171,6 @@ public:
 
         @remarks Different versions of Windows and different versions of other
                  platforms support very different subsets of the styles above
-                 - there is no similarity even between Windows95 and Windows98 -
                  so handle with care.
 
         @see SetStyle(), SetColour(), SetWidth()
diff --git a/interface/wx/platinfo.h b/interface/wx/platinfo.h
index 39914a56fe..833f190ee0 100644
--- a/interface/wx/platinfo.h
+++ b/interface/wx/platinfo.h
@@ -28,16 +28,10 @@ enum wxOperatingSystemId
     //! A combination of all @c wxOS_MAC_* values previously listed.
     wxOS_MAC = wxOS_MAC_OS|wxOS_MAC_OSX_DARWIN,
 
-    wxOS_WINDOWS_9X     = 1 << 2,     //!< Windows 9x family (95/98/ME)
     wxOS_WINDOWS_NT     = 1 << 3,     //!< Windows NT family (XP/Vista/7/8/10)
-    wxOS_WINDOWS_MICRO  = 1 << 4,     //!< MicroWindows
-    wxOS_WINDOWS_CE     = 1 << 5,     //!< Windows CE (Windows Mobile)
     
-    //! A combination of all @c wxOS_WINDOWS_* values previously listed.
-    wxOS_WINDOWS = wxOS_WINDOWS_9X       |
-                    wxOS_WINDOWS_NT      |
-                    wxOS_WINDOWS_MICRO   |
-                    wxOS_WINDOWS_CE,
+    //! Any Windows system, currently can be only wxOS_WINDOWS_NT.
+    wxOS_WINDOWS = wxOS_WINDOWS_NT,
 
     wxOS_UNIX_LINUX     = 1 << 6,       //!< Linux
     wxOS_UNIX_FREEBSD   = 1 << 7,       //!< FreeBSD
@@ -54,10 +48,7 @@ enum wxOperatingSystemId
                 wxOS_UNIX_NETBSD    |
                 wxOS_UNIX_SOLARIS   |
                 wxOS_UNIX_AIX       |
-                wxOS_UNIX_HPUX,
-
-    wxOS_DOS            = 1 << 15,      //!< Microsoft DOS
-    wxOS_OS2            = 1 << 16       //!< OS/2
+                wxOS_UNIX_HPUX
 };
 
 /**
@@ -73,13 +64,12 @@ enum wxPortId
 
     wxPORT_MSW      = 1 << 1,       //!< wxMSW, native toolkit is Windows API
     wxPORT_MOTIF    = 1 << 2,       //!< wxMotif, using [Open]Motif or Lesstif
-    wxPORT_GTK      = 1 << 3,       //!< wxGTK, using GTK+ 1.x, 2.x, GPE or Maemo
+    wxPORT_GTK      = 1 << 3,       //!< wxGTK, using GTK+ 1.x, 2.x, 3.x, GPE
     wxPORT_DFB      = 1 << 4,       //!< wxDFB, using wxUniversal
     wxPORT_X11      = 1 << 5,       //!< wxX11, using wxUniversal
-    wxPORT_OS2      = 1 << 6,       //!< wxOS2, using OS/2 Presentation Manager
     wxPORT_MAC      = 1 << 7,       //!< wxMac, using Carbon or Classic Mac API
     wxPORT_COCOA    = 1 << 8,       //!< wxCocoa, using Cocoa NextStep/Mac API
-    wxPORT_WINCE    = 1 << 9        //!< wxWinCE, toolkit is WinCE SDK API
+    wxPORT_QT       = 1 << 10       //!< wxQT, using QT4
 };
 
 
@@ -285,8 +275,8 @@ public:
     
     /**
         Returns the operating system family name for the given wxOperatingSystemId
-        enumeration value: @c Unix for @c wxOS_UNIX, @c Macintosh for @c wxOS_MAC,
-        @c Windows for @c wxOS_WINDOWS, @c DOS for @c wxOS_DOS, @c OS/2 for @c wxOS_OS2.
+        enumeration value: @c Unix for @c wxOS_UNIX, @c OSX for @c wxOS_MAC_OS,
+        @c Windows for @c wxOS_WINDOWS.
     */
     static wxString GetOperatingSystemFamilyName(wxOperatingSystemId os);
 
diff --git a/interface/wx/textctrl.h b/interface/wx/textctrl.h
index 7de8831775..cf1cf2b14c 100644
--- a/interface/wx/textctrl.h
+++ b/interface/wx/textctrl.h
@@ -960,11 +960,10 @@ public:
     @style{wxTE_READONLY}
            The text will not be user-editable.
     @style{wxTE_RICH}
-           Use rich text control under Win32, this allows to have more than
-           64KB of text in the control even under Win9x. This style is ignored
-           under other platforms.
+           Use rich text control under MSW, this allows to have more than 64KB
+           of text in the control. This style is ignored under other platforms.
     @style{wxTE_RICH2}
-           Use rich text control version 2.0 or 3.0 under Win32, this style is
+           Use rich text control version 2.0 or higher under MSW, this style is
            ignored under other platforms
     @style{wxTE_AUTO_URL}
            Highlight the URLs and generate the wxTextUrlEvents when mouse
diff --git a/interface/wx/thread.h b/interface/wx/thread.h
index 2981bda3f5..e99caa1605 100644
--- a/interface/wx/thread.h
+++ b/interface/wx/thread.h
@@ -1034,19 +1034,6 @@ public:
             something with the thread (e.g. pass its ID to an external library)
             before it starts.
 
-        @warning
-            It is a good idea to explicitly specify a value as systems'
-            default values vary from just a couple of KB on some systems (BSD and
-            OS/2 systems) to one or several MB (Windows, Solaris, Linux).
-            So, if you have a thread that requires more than just a few KB of memory, you
-            will have mysterious problems on some platforms but not on the common ones.
-            On the other hand, just indicating a large stack size by default will give you
-            performance issues on those systems with small default stack since those
-            typically use fully committed memory for the stack.
-            On the contrary, if you use a lot of threads (say several hundred),
-            virtual address space can get tight unless you explicitly specify a
-            smaller amount of thread stack space for each thread.
-
         @return One of:
           - @b wxTHREAD_NO_ERROR - No error.
           - @b wxTHREAD_NO_RESOURCE - There were insufficient resources to create the thread.
diff --git a/interface/wx/toolbar.h b/interface/wx/toolbar.h
index 5a4938b7ea..bcb3ff77ce 100644
--- a/interface/wx/toolbar.h
+++ b/interface/wx/toolbar.h
@@ -24,9 +24,6 @@ enum
     wxTB_VERTICAL    = wxVERTICAL,
     wxTB_LEFT        = wxTB_VERTICAL,
 
-    /** show 3D buttons (wxToolBarSimple only) */
-    wxTB_3DBUTTONS,
-
     /** "flat" buttons (Win32/GTK only) */
     wxTB_FLAT,
 
diff --git a/interface/wx/txtstrm.h b/interface/wx/txtstrm.h
index 397a3fdf1a..11dc8574d4 100644
--- a/interface/wx/txtstrm.h
+++ b/interface/wx/txtstrm.h
@@ -292,8 +292,8 @@ typedef enum
     cout << 1.23456;
     @endcode
 
-    The wxTextOutputStream writes text files (or streams) on DOS, Macintosh and
-    Unix in their native formats (concerning the line ending).
+    The wxTextOutputStream writes text files (or streams) on Windows or Unix in
+    their native formats (concerning the line ending).
 
     @library{wxbase}
     @category{streams}