The MatrixBarcode control is used to render a QR code.
Properties
Name
| Type: | String of any length |
| Description: | The name of the MatrixBarcode . Remember that the name must be unique within the same panel. |
Location
| Type: | String in format “X, Y” where X and Y are both unsigned integers. Value range for X and Y is 0–1023. |
| Description: | The Location property specifies where the MatrixBarcode shall be placed in relation to the parent control. |
Size
| Type: | String in format “width, height” where width and height are both unsigned integers. Value range for width and height is 0–1023. |
| Description: | Defines the width of the MatrixBarcode on the display. |
Code
| Type: | String of any length |
| Description: | The data that is encoded into a matrix barcode |
| Default: | “https://www.flowbird.group/” |
QRCodeErrorCorrectionLevelInt
| Type: | Unsigned integer. Value range 0–3. |
| Description: | Defines the amount of error correction. |
0 - Approx. 7% of codewords can be restored. Error correction level 0 is appropriate for high symbol quality and/or the need for the smallest possible symbol.
1 - Approx. 15% of codewords can be restored. Level 1 is described as Standard level and offers a good compromise between small size and increased reliability.
2 - Approx. 25% of codewords can be restored. Level 2 is a High reliability level and suitable for more critical or poor print quality applications
3 - Approx. 30% of codewords can be restored. Level 3 offers the maximum achievable reliability.
| Default: | 3 |
QRCodeModuleSize
| Type: | positive floating point number. 0.01. |
| Description: | Defines the size of each subsquare in inches, assuming a resolution of 100 pixels per inch. I.e. 0.01 equals one pixel. |
| Default: | 0.07 |
Example
The example renders an image file with a QR code that is a link to http://www.google.com with minimum error correction and 10 pixels per module.
<TFT:MatrixBarcode Name="MyQrCode" Location="234,250" Size="300,300" Code="http://www.google.com" QRCodeErrorCorrectionLevelInt="0" QRCodeModuleSize="0.10"/>
