Property: InitialSubSet

(TBarcode1D_Code128, TBarcode1D_EAN128)

Specifies an initial characters subset for a TBarcode1D_Code128 component or a TBarcode1D_EAN128 component.

Syntax:

type

{ Defined in the pCode128 unit }

TCode128SubSet = (cssSubAuto, cssSubSetA, cssSubSetB, cssSubSetC);

property InitialSubSet: TCode128SubSet;

Description:

The Code 128 and EAN-128 barcode symbologies can encode all 128 characters of ASCII character sets. This is done by switching between all 3 character subsets of Code 128:

• SubSet A: Includes characters with ASCII values from 00 to 95 (i.e. all of the standard upper case alphanumeric characters together with the control characters inclusive), and function characters.
• SubSet B: Includes characters with ASCII values from 32 to 127 (i.e. all of the standard upper case alphanumeric characters together with the lower case alphabetic characters inclusive), and function characters.
• SubSet C: includes the set of 100 digit pairs from 00 to 99 inclusive, as well as seven special characters. This allows numeric data to be encoded, two data digits per symbol character, at effectively twice the density of standard data.

  Note, only an even number of digits can be encoded if using the character subset C.

Use the InitialSubSet property to specify a initial characters subset for a TBarcode1D_Code128 or TBarcode1D_EAN128 component. When the EncodeMode property is set to cemAuto, the characters subset will be automatically switched if a character is encountered that cannot be encoded by current characters subset. You need to manually insert the \a, \b, \c, or \s for switching the character subset if the EncodeMode property is set to cemManual.

The property can be one of these values (defined in the pCode128 unit):

• cssSubAuto: The initial characters subset will be selected depending on the barcode text in order to minimize the symbol size. You can always use the CurrentSubSet property to get the factual initial characters subset.
• cssSubSetA: Using the characters subset A as the initial characters subset.
• cssSubSetB: Using the characters subset B as the initial characters subset.
• cssSubSetC: Using the characters subset C as the initial characters subset.

You can always use the CurrentSubSet property to get the factual initial characters subset.

Contents