Denso BHT-700-CE Reference Manual page 95

Barcode handy terminal

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Comment:

If barcode data contains a character(s) out of the specification of the barcode type specified by

dwCDType, then this function sets "0" and returns an error code. However, if only the CD position

character in barcode data is out of the specification, this function calculates the correct CD and returns it

as one-character string.

[Ex 1] BHT_GetBarChkDgt(TEXT("494AB4458"), 'A', &dwChkDgt);

"A" and "B" are out of the specification of EAN or UPC, so dwChkDgt is "0" and the function

returns an error code.

[Ex 2] BHT_GetBarChkDgt(TEXT("4940045X"), 'A', &dwChkDgt);

"X" is out of the specification but it is a CD position character, so this function calculates the

correct CD and dwChkDgt is "8."

[Ex 3] BHT_GetBarChkDgt(TEXT("a0ef3-a"), 'N', &dwChkDgt);

"e" and "f" are out of the specification of Codabar (NW-7), so dwChkDgt is "0" and the

function returns an error code.

[Ex 4] BHT_GetBarChkDgt(TEXT("a123Qa"), 'N', &dwChkDgt)

"Q" is out of the specification but it is a CD position character, so this function calculates the

correct CD and dwChkDgt is "-."

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