免费QRcode组件，效果很好

Qrcode delphi c++ C# 找了很久，在国外网站找到绝对能用的QRcode生成代码，需要Dll，效果很好 { Summary Generates Windows Bitmap file with the text encoded as QR code Parameters FileName : The name of the bitmap file Text : The text to encode Margin : The margin from the border PixelSize : The size of the one image point. Level : The error correction level } class procedure GenerateBitmapFile(const FileName : string; const Text : string; Margin : integer = 4; PixelSize : integer = 3; Level : TErrorCorretion = QualityLow);