FoxBarcodeQR is a application free software and offers a barcode tool for the Visual FoxPro Community. This is a supplement of
FoxBarcode class only for
QR Code barcodes.
FoxBarcodeQR use the free library BarCodeLibrary.DLL of Dario Alvarez Aranda (Mexico)
This class is an alternative solution for all developers who requested QR Code support until
FoxBarcode natively support the QR Code with
Project Manager: VFPEncoding (*)
(*) VFPEncoding are Guillermo Carrero (RIP) (Barcelona, Spain) and Luis Maria Guayan (Tucuman, Argentina)
Download the latest release of FoxBarcodeQR - v.1.11 - Release 2013.08.24
The BarCodeLibrary.DLL library generates functionals QR Codes, but you can only set the type and size of the generated image. No settings supports for error correction level.
The external library
The BarCodeLibrary.DLL library, only have three functions to declare:
- LibraryVersion: Returns a string with the version of the library.
- SetConfiguration: A method to set the size and type of image file to generate.
- GenerateFile: This method is responsible for generating the image of the QR Code.
FoxBarcodeQR encapsulates BarCodeLibrary.dll library functions into a single method called
QRBarcodeImage(), which receives the following parameters:
- tcText: Text to encode
- tcFile: Name the image file to generate. If none is specified, it generates a random file name in the Windows temporary files folder.
- tnSize: The size of the generated image. Receives an integer between 2 and 12
- 2 = 66 x 66 (in pixels)
- 3 = 99 x 99
- 4 = 132 x 132
- 5 = 165 x 165
- 6 = 198 x 198
- 7 = 231 x 231
- 8 = 264 x 264
- 9 = 297 x 297
- 10 = 330 x 330
- 11 = 363 x 363
- 12 = 396 x 396
- tnType: The type of the generated image file. Receives an integer between 0 and 2.
And returns the file path of the bar code image generated.
The following example creates a image of a QR Code barcode from a size 6 (198 x 198 pixels) and PNG type.
SET PROCEDURE TO LOCFILE("FoxBarcodeQR.prg") ADDITIVE
*--- Create FoxBarcodeQR object and QR Code barcode image<
LOCAL loFbc, lcQRImage
loFbc = CREATEOBJECT("FoxBarcodeQR")
lcQRImage = loFbc.QRBarcodeImage("http://vfpx.codeplex.com/wikipage?title=FoxBarcode",,6,2)
To include a barcode on a report, you must insert an Image object and set the property with a call ControlSource QRBarcodeImage() method and is recommended to set "contents Scale, Retain shape" if the image size differs from the frame.
Important: Before you run the report and create the object FoxBarcode, you must declare the variable as
PRIVATE so that it has scope in the report, as follows:
*--- Create FoxBarcodeQR private object
m.poFbc = CREATEOBJECT("FoxBarcodeQR")
REPORT FORM FoxBarcodeQR PREVIEW
The only files needed to be distributed to FoxBarcodeQR function properly are:
Notes on the distribution and installation of BarCodeLibrary.dll file:
BarCodeLibrary.dll file not register. It must be in the same folder as the application or in the Windows System folder.
BarCodeLibrary.dll was tested and runs on Windows XP, 7 and 8 (32 and 64 bits)
To my friend Guillermo from heaven illuminated me with this supplement to our class