Arbortext Command Language > Callbacks > doc_add_callback > tbl_obj_attr_set Callback Type
  
tbl_obj_attr_set Callback Type
Function prototype:
function funcname (doc, target, attr, old, new, op)
tbl_obj_attr_set is called before a table object attribute is modified.
Arguments
doc is the identifier of the document containing target.
target is the table object ID (toid) of the table object whose attribute is to be modified.
attr is the name of the attribute to be modified.
old is the current attribute value.
new is the intended attribute value.
op is the function callback operation. Callbacks are called twice in succession with op specifying the stage of callback operation.
1. op == 1 first call — The returned argument specifies whether the execution should continue or be stopped:
0 — Continue callback processing.
-1 — Stop further callback processing.
2. op == 2 second call — Occurs unless the processing was stopped during the first call. The returned argument allows or prevents basic Arbortext Editor processing after all callbacks have been called:
0 — Basic Arbortext Editor processing allowed.
-1 — Basic Arbortext Editor processing prevented.