diff --git a/interface/wx/event.h b/interface/wx/event.h
index 47b779a3ee..64adc9862e 100644
--- a/interface/wx/event.h
+++ b/interface/wx/event.h
@@ -1386,8 +1386,19 @@ public:
     //@}
 
     /**
-        Returns the raw key code for this event. This is a platform-dependent scan code
-        which should only be used in advanced applications.
+        Returns the raw key code for this event.
+
+        The flags are platform-dependent and should only be used if the
+        functionality provided by other wxKeyEvent methods is insufficient.
+
+        Under MSW, the raw key code is the value of @c wParam parameter of the
+        corresponding message.
+
+        Under GTK, the raw key code is the @c keyval field of the corresponding
+        GDK event.
+
+        Under OS X, the raw key code is the @c keyCode field of the
+        corresponding NSEvent.
 
         @note Currently the raw key codes are not supported by all ports, use
               @ifdef_ wxHAS_RAW_KEY_CODES to determine if this feature is available.
@@ -1395,8 +1406,18 @@ public:
     wxUint32 GetRawKeyCode() const;
 
     /**
-        Returns the low level key flags for this event. The flags are
-        platform-dependent and should only be used in advanced applications.
+        Returns the low level key flags for this event.
+
+        The flags are platform-dependent and should only be used if the
+        functionality provided by other wxKeyEvent methods is insufficient.
+
+        Under MSW, the raw flags are just the value of @c lParam parameter of
+        the corresponding message.
+
+        Under GTK, the raw flags contain the @c hardware_keycode field of the
+        corresponding GDK event.
+
+        Under OS X, the raw flags contain the modifiers state.
 
         @note Currently the raw key flags are not supported by all ports, use
               @ifdef_ wxHAS_RAW_KEY_CODES to determine if this feature is available.
diff --git a/src/gtk/window.cpp b/src/gtk/window.cpp
index fa02dbc397..1e4523f340 100644
--- a/src/gtk/window.cpp
+++ b/src/gtk/window.cpp
@@ -729,7 +729,7 @@ static void wxFillOtherKeyEventFields(wxKeyEvent& event,
     }
 
     event.m_rawCode = (wxUint32) gdk_event->keyval;
-    event.m_rawFlags = 0;
+    event.m_rawFlags = gdk_event->hardware_keycode;
 
     wxGetMousePosition( &x, &y );
     win->ScreenToClient( &x, &y );