Event: OnInvalidChar

Occurs if there is any invalid character in the Barcode, the Tracking (Only for TBarcode_OneCode component), or the Routing (Only for TBarcode_OneCode component) property. For the TBarcode_FIM component, The ERangeError exception is occurred if the value of FIMType property is not from "A" to "E" ("E" denotes empty barcode).

Syntax:

type

TOnInvalidChar = procedure (Sender: TObject; Index: Integer; BarcodeChar: Char) of object;

property OnInvalidChar: TOnInvalidChar;

Parameters:

• Sender: TObject; It is the object whose event handler is called.
• Index: Integer; The index position of first invalid character in the Barcode property, the index 1 denotes that the first character is invalid character. For the TBarcode_OneCode component, if the invalid character is in the Tracking property, the Index is from 1 to 20 including 1 and 20; if it is in the the Routing property, the value starts with 21 (First character of the Routing property).
• Char: TChar; The invalid character.

Note:

The even only occurs during the drawing barcode symbol period. If the Image property isn't specified or the Locked property is set to true, It does not occur even if there are invalid characters, until the Image property is specified and the Locked property is set to false.

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