diff -r dd0ae1c62a72 -r 2e384acc89a6 ui/ui/tree.h
--- a/ui/ui/tree.h	Thu Nov 16 12:04:10 2017 +0100
+++ b/ui/ui/tree.h	Sun Nov 19 09:00:16 2017 +0100
@@ -73,6 +73,12 @@
      * TODO: return
      */
     void*(*getvalue)(void*, int);
+    
+    UiBool(*candrop)(UiEvent*, UiSelection*, UiList*, int);
+    void(*drop)(UiEvent*, UiSelection*, UiList*, int);
+    UiBool(*candrag)(UiEvent*, UiList*, int);
+    void(*data_get)(UiEvent*, UiSelection*, UiList*, int);
+    void(*data_delete)(UiEvent*, UiList*, int);
 };
 
 struct UiListCallbacks {
@@ -87,7 +93,7 @@
     ui_callback selection;
     
     /*
-     * userdata for both callback
+     * userdata for all callbacks
      */
     void *userdata;
 };
@@ -114,6 +120,11 @@
 UIWIDGET ui_table(UiObject *obj, UiList *data, UiModel *model, UiListCallbacks cb);
 UIWIDGET ui_table_nv(UiObject *obj, char *varname, UiModel *model, UiListCallbacks cb);
 
+void ui_table_dragsource(UIWIDGET tablewidget, int actions, char *target0, ...);
+void ui_table_dragsource_a(UIWIDGET tablewidget, int actions, char **targets, int nelm);
+void ui_table_dragdest(UIWIDGET tablewidget, int actions, char *target0, ...);
+void ui_table_dragdest_a(UIWIDGET tablewidget, int actions, char **targets, int nelm);
+
 UIWIDGET ui_combobox(UiObject *obj, UiList *list, ui_getvaluefunc getvalue, ui_callback f, void *udata);
 UIWIDGET ui_combobox_str(UiObject *obj, UiList *list, ui_callback f, void *udata);
 UIWIDGET ui_combobox_nv(UiObject *obj, char *varname, ui_getvaluefunc getvalue, ui_callback f, void *udata);