VaToolBxBase64ImageToAlpha

This function is used to decode a base64 encoded binary in an alphanumeric variable, taking character encoding into account.

IMAGE	Base64Binary	Base64 encoded binary
ALPHA	Encoding	Character encoding to use to convert the result of base64 decoding of the image into a string. This encoding value must be included in the character set registry defined by the IANA. It must also be included in the character sets supported by the JVM (Java) or libiconv library (Windows). If encoding is not specified (empty string), the string to encode is converted using: the JVM default encoding in Java, the system's current ANSI code in Windows.
ALPHA	TargetString	Decoded string
NUM_BIN_4	Length	Length of the target string. Important: in the event of a -2 execution error, this parameter is updated when the function call is returned (see the description of the ReturnCode parameter below).
NUM_BIN_2	ReturnCode	Operation return code: 0: Operation completed successfully. -1: Character encoding not supported. -2: The target string is too short. In this case, when the function is returned, the "Length" parameter is updated with the recommended string size. -3: Invalid IMAGE variable (C platform)

lenStringOut = 1000

encoding = 'UTF-8'

CALL_DLL 'VATOOLBX.DLL' 'VaToolBxBase64ImageToAlpha' pictureInBase64 encoding stringOut lenStringOut retCode