Available mask patterns for QR-Code. 
- Enumerator: 
- 
| eQRMsk_Default | =-1: Default: Mask is computed automatically (time consuming!) |  | eQRMsk_0 | =0: Use fixed mask 0 |  | eQRMsk_1 | =1: Use fixed mask 1 |  | eQRMsk_2 | =2: Use fixed mask 2 |  | eQRMsk_3 | =3: Use fixed mask 3 |  | eQRMsk_4 | =4: Use fixed mask 4 |  | eQRMsk_5 | =5: Use fixed mask 5 |  | eQRMsk_6 | =6: Use fixed mask 6 |  | eQRMsk_7 | =7: Use fixed mask 7 |