What is the maximum string length for QRcode_encodeStringStructured?

[lexuanquynh]

I read a piece of text from a txt file. I then use this function to generate multiple QRCodes. However, it says it cannot be processed.

QRcode_List *qr_list = QRcode_encodeStringStructured([data UTF8String], 1, QR_ECLEVEL_L, QR_MODE_8, 1);
    if (qr_list == NULL) {
        NSLog(@"Failed to encode data into QR code.");
        return @[];
    }

[lexuanquynh]

I fixed it by increase version.