TTMSFNCWXBarcodeDecoder.DecodeFromBase64 Method

Decodes the barcode contained in a base64-encoded image.

API unit family: TMSFNCWXBarcodeDecoder Declaring type: TTMSFNCWXBarcodeDecoder Inherited from: TTMSFNCWXCustomBarcodeDecoder, TTMSFNCWXCustomBarcodeDecoderBase

Overloads

Overload 1

Decodes the barcode contained in a base64-encoded image.

procedure DecodeFromBase64(const ABase64: string; const ACallback: TTMSFNCWXCustomBarcodeDecodeCallBackEvent = nil); virtual;

Remarks

This is the central decode entry point that the file, image, and camera paths funnel into. Descendants override it to perform the actual decode.

Parameters

Name	Description
ABase64	Base64-encoded image data, optionally prefixed with a data: URI scheme.
ACallback	Optional callback invoked with the decode result; pass nil to rely on the OnDecoded event instead.

Overload 2

Decodes a base64-encoded image using the configured symbology by invoking the client-side decoding library.

procedure DecodeFromBase64(const ABase64: string; const ACallback: TTMSFNCWXCustomBarcodeDecodeCallBackEvent = nil); override;

Remarks

The result is delivered asynchronously through OnDecoded and the supplied callback once the library reports back.

Parameters

Name	Description
ABase64	Base64-encoded image data. When no data: URI prefix is present a PNG image prefix is assumed.
ACallback	Optional callback invoked with the decode result; pass nil to rely on the OnDecoded event instead.