diff --git a/platformspecifics/u32/u32backend.hpp b/platformspecifics/u32/u32backend.hpp
index ec2538a..8cb9075 100644
--- a/platformspecifics/u32/u32backend.hpp
+++ b/platformspecifics/u32/u32backend.hpp
@@ -16,6 +16,7 @@ public:
         static PlatformBackend inst;
         return inst;
     }
+    WId getActiveWID();
 };
 
 #endif // U32BACKEND_HPP