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OmrBuffer.FrontBuffer property

Read-Only Property.

Type:

This is the string of data collected for the front side of the sheet scanned. For each timing mark on the sheet, the scanner recognizes 48 OMR cells across the sheet, in a row. Therefore, the size of the string is 48 * the number of front timing marks, see OmrBuffer.FrontTimingMarks property.

The read-level detected for each OMR cell is stored in a byte: 0 – 9, A – F, or ‘space’ if the bubble was not built. This is never a NULL string; if no bubbles are detected, the entire string is filled with spaces.

Valid

See ScanEventArgs and ScanningManager Events Valid Combinations.

IDL

HRESULT FrontBuffer([out, retval] BSTR *pVal);

Value

String of OMR read-level values, each byte represents the read-level value for one scanner read-cell.

Exceptions

Scanning Services Exceptions

See also

How to Diagnose a Scanner

 

 

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