2 Usage
| (require simple-qr) | package: simple-qr |
procedure
(qr-code data output_file_path #:mode mode #:error_level error_level #:module_width module_width) → void? data : (string?) output_file_path : (path-string?) mode : string? error_level : string? module_width : exact_nonngegative-integer?
output qr code image to file.
#lang racket |
|
(require simple-qr) |
|
(qr-code "Hello World!" "hello.png") |
You can use the optional parameter #:module_width to control the size of image.
module_width means a block(black or white)’s width. 5 is the default.
#lang racket |
|
(require simple-qr) |
|
(qr-code "https://github.com/simmone" "normal.png") |
|
(qr-code "https://github.com/simmone" "small.png" #:module_width 2) |
|
(qr-code "https://github.com/simmone" "large.png" #:module_width 10) |
