If @a value_if_not_found is @c wxID_NONE, the number is obtained via
wxNewId(). Otherwise @a value_if_not_found is used.
+
Macro @c XRCID(name) is provided for convenient use in event tables.
+
+ @note IDs returned by XRCID() cannot be used with the <tt>EVT_*_RANGE</tt>
+ macros, because the order in which they are assigned to symbolic @a name
+ values is not guaranteed.
*/
static int GetXRCID(const wxString& str_id, int value_if_not_found = wxID_NONE);