VaToolBxImageToAlpha

This function is used to convert the binary content of an image to an alphanumeric string according to a character encoding.

IMAGE	SourceBinary	Binary to decode.
ALPHA	Encoding	Character encoding to use when converting the image to an alphanumeric 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.
ALPHA	Base64String	Target string resulting from the conversion.
NUM_BIN_2	Length	Length of the target string.
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.

encoding = 'UTF-8'

LgBuff = 32000

CALL_DLL 'VATOOLBX.DLL' 'VaToolBxImageToAlpha' Picture encoding strb64 LgBuff retCode