TTMSFNCWXCustomQRDecoder.DecodeFromBase64 Method

Decodes a QR code from a base64-encoded image and reports the result through the supplied callback.

API unit family: TMSFNCWXQRDecoder Declaring type: TTMSFNCWXCustomQRDecoder

Syntax

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

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

Name	Description
`ABase64`	The image data as a base64 string. A bare base64 payload is accepted; when it does not already carry a `data:` URI prefix, a PNG data URI prefix is added automatically.
`ACallback`	Optional callback invoked with the decode outcome and the decoded text. When omitted, results are still reported through the decoded event.