- u -

• update_semantics_handler : _FlEngine
• update_semantics_handler_data : _FlEngine
• update_semantics_handler_destroy_notify : _FlEngine
• user_data : _FlKeyboardChannel , _FlKeyEmbedderCallRecord , _FlKeyEmbedderUserData , _FlMouseCursorChannel , _FlPlatformChannel , _FlTextInputChannel , FlutterDesktopGpuSurfaceTextureConfig , FlutterDesktopPixelBufferTextureConfig