Document wxDataViewChoiceByIndexRenderer.

At least briefly document this class too and not only its parent
wxDataViewChoiceRenderer one.

Closes #14265.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@71346 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/dataview.h

@@ -1690,12 +1690,15 @@ public:
 
 
 /**
-    @class wxDataViewChoiceRenderer
+    A wxDataViewCtrl renderer using wxChoice control and values of strings in
+    it.
 
     This class is used by wxDataViewCtrl to render choice controls.
     It stores a string so that SetValue() and GetValue() operate
     on a variant holding a string.
 
+    @see wxDataViewChoiceByIndexRenderer
+
     @library{wxadv}
     @category{dvc}
 */
@@ -1714,7 +1717,7 @@ public:
         Returns the choice referred to by index.
     */
     wxString GetChoice(size_t index) const;
-    
+
     /**
         Returns all choices.
     */
@@ -1722,6 +1725,28 @@ public:
 };
 
 
+/**
+    A wxDataViewCtrl renderer using wxChoice control and indexes into it.
+
+    Unlike its base wxDataViewChoiceRenderer class, this one stores the choice
+    index, i.e. an @c int, in the variant used by its SetValue() and
+    GetValue().
+
+    @library{wxadv}
+    @category{dvc}
+*/
+class wxDataViewChoiceByIndexRenderer : public wxDataViewChoiceRenderer
+{
+public:
+    /**
+        The ctor.
+    */
+    wxDataViewChoiceByIndexRenderer( const wxArrayString &choices,
+                              wxDataViewCellMode mode = wxDATAVIEW_CELL_EDITABLE,
+                              int alignment = wxDVR_DEFAULT_ALIGNMENT );
+};
+
+
 /**
     @class wxDataViewDateRenderer