IupGetAllAttributes
Returns the names of all attributes of an element that are set in its internal hash table only.
Parameters/Return
int IupGetAllAttributes(Ihandle* ih, char** names, int max_n);ih: identifier of the interface element.
names: table receiving the names. Only the list of names needs
to be allocated. Each name will point to an internal string.
max_n: maximum number of names the table can
receive.
Returns: the actual number of names loaded to the table. If names==NULL or max_n==0 or -1 then returns the maximum number of names.