WklBarcode

A QR Code, Code 128 or Data Matrix symbol of a text, in forms, in reports and on UserForms, drawn by encoders of the framework's own - no barcode font, no external library.

• Print labels with a QR Code

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+-------------------------------+
|  ▄▄▄▄▄▄▄  ▄ ▄▄  ▄▄▄▄▄▄▄       |
|  # ▄▄▄ # ▀#▄▀#  # ▄▄▄ #     1 |
|  # ### #  ▄▀ ▄  # ### #       |
|  ▀▀▀▀▀▀▀ # ▀ #  ▀▀▀▀▀▀▀       |
|  ▀▄#▀▄▀▀▄▀#▄ ▀▀ ▄▀▄▀#▄        |
|        WKL-4711             2 |
+-------------------------------+

• Three codes. QR Code (any text, UTF-8, four levels of error correction), Code 128 (ASCII, shortest symbol by switching code sets) and Data Matrix ECC 200 (square, ISO-8859-1).
• Bound like a text box. Set the Control Source to a field or expression; the code follows the current record. A bound barcode never writes back.
• A code per record in reports. In the detail section of a report the bound barcode draws each record's code - in print preview and in a PDF.
• Sharp in print. Modules are drawn as rectangles in whole pixels; on a printer the code is drawn at 300 dpi.
• Picture files. SaveImage writes the code of any text as PNG or BMP, also from an object made with CreateObject, without a form.
• No error for one bad record. A value the code cannot encode shows the reason in the control and in ErrorText.

The encoders are part of the framework's core (QrCode, Code128, DataMatrix) and turn a text into a matrix of modules; the control only draws that matrix. A change of Value, Symbology or ErrorCorrection encodes again; colors, quiet zone and text only redraw. The control has no color scheme: black on white is what scanners read best, and the designer warns when the modules are not clearly darker than the background. In design view the control shows a sample code of its kind, so the size can be judged before data arrives.

• How to: Install the released package
• How to: Deploy an application with WKL controls to user PCs
• What the per-user registration writes

None

• API reference: WklBarcode

• WklImage overview