Got it!! Here's the code :
tID = dict.tableName2Id(tableName);
counter = 0;
dt = new DictTable(tID);
if (dt)
{
counter = dt.fieldNext(counter);
while (counter)
{
df = dt.fieldObject(counter);
if (df)
{
t = df.baseType();
fields = conIns(fields,1,enum2str(t));
}
counter = dt.fieldNext(counter);
}
}