public Boolean lookupForwardForColumns(UInt16 numColumns)

True if successful, false otherwise.

To specify the value to search for, set the column value for each column in the index. The cursor is left on the first row that matches or is greater than the index value. On failure (no rows greater than the value being looked for) the cursor position is after the last row (isEOF()).

Each search must be preceded by a call to lookupBegin().