TTMSFNCWXQRDecoder.DecodeFromBase64WithFilename Method

Decodes a QR code from a base64-encoded image while associating the result with a file name, so callers can correlate the outcome with the source image.

API unit family: TMSFNCWXQRDecoder Declaring type: TTMSFNCWXQRDecoder Inherited from: TTMSFNCWXCustomQRDecoder

Syntax

procedure DecodeFromBase64WithFilename(const ABase64: string; const AFilename: string; const ACallback: TTMSFNCWXCustomQRFilenameDecodeCallBackEvent = nil);

Remarks

Decoding is asynchronous; the result is delivered later through the callback or the decoded event rather than being returned by this call.

Parameters

Name	Description
ABase64	The image data as a base64 string. When it does not already carry a data: URI prefix, a PNG data URI prefix is added automatically.
AFilename	The file name to associate with this decode operation; it is passed back to the callback when the result is available.
ACallback	Optional callback invoked with the decode outcome, the decoded text, and the supplied file name. When omitted, results are still reported through the decoded event.