Dear Melba23, In below test i'm trying to detect the index of highlighted item in the ListView following the steps from A Beginner’s Guide To Melba23’s GUIListViewEx UDF, namely: set the relevant parameter of _GUIListViewEx_MsgRegister to False call the relevant UDF handler function (_GUIListViewEx_WM_NOTIFY_Handler) from within your existing handler All seems to work except for changing items: i can access to the edit mode, but seems not able to change the value when pres