rc (LONG) - returns

Return codes.

This function returns a LONG value as an error indicator.

NO_ERROR

Successful.
GRE_INVALID_COLUMN_INDEX
Invalid column index.
CE_INVALID_PRESENTATION_SPACE
Error. For example, this message might be returned as a result of an invalid CellByteSize.
CE_INVALID_ROW_INDEX
Invalid row index.
GRE_NEGATIVE_LENGTH
Negative length.

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