The WIA_IPS_MAXIMUM_PATCH_CODES_PER_PAGE property describes the maximum number of patch codes that the device can and should detect on one document page side when patch code detection is enabled.
Property Type: VT_I4
Valid Values: WIA_PROP_RANGE
Access Rights: Read/Write
A value of 0 means "no maximum". The application can decrease the current value of this property in order to reduce the time spent on patch code detection and increase the scan speed.
This property is required for all Patch Code Reader items but it can be implemented as a range container containing only the value of 0 (minimum equal with maximum and set to 0, step size of 0).