--- a/ui/common/object.h	Sun Nov 23 10:49:24 2025 +0100
+++ b/ui/common/object.h	Sun Nov 23 11:16:13 2025 +0100
@@ -30,10 +30,16 @@
 #define	UIC_OBJECT_H
 
 #include "../ui/toolkit.h"
+#include <cx/map.h>
 
 #ifdef	__cplusplus
 extern "C" {
 #endif
+    
+typedef struct UiObjectPrivate {
+    UiObject obj;
+    CxMap *ext;
+} UiObjectPrivate;
 
 typedef void (*ui_object_callback)(UiObject *obj, void *userdata);