Add WC_COMBOBOX.
diff --git a/include/commctrl.h b/include/commctrl.h
index e0bc372..9801aca 100644
--- a/include/commctrl.h
+++ b/include/commctrl.h
@@ -4875,6 +4875,20 @@
#endif
#define WC_STATIC WINELIB_NAME_AW(WC_STATIC)
+/**************************************************************************
+ * Combobox control
+ */
+
+#define WC_COMBOBOXA "ComboBox"
+#if defined(__GNUC__)
+# define WC_COMBOBOXW (const WCHAR []){ 'C','o','m','b','o','B','o','x',0 }
+#elif defined(_MSC_VER)
+# define WC_COMBOBOXW L"ComboBox"
+#else
+static const WCHAR WC_COMBOBOXW[] = { 'C','o','m','b','o','B','o','x',0 };
+#endif
+#define WC_COMBOBOX WINELIB_NAME_AW(WC_COMBOBOX)
+
#ifdef __cplusplus
}
#endif
