Version 3.00 Feb. 2019
APPLICATION DEVELOPMENT GUIDE
CheckScanner
11
CHK_DI_EXTEND_READAREA and
CHK_DI_EXTEND_FILTER are effective only for check
scanner mode. Those flags can be set during card scanner
mode, but the settings are not reflected to card reading directly.
If those flags were set during card scanner mode, the flags
become effective after changing the mode to check scanner
mode.
Returned value One of the following is returned and stored in the ResultCode
property.
Value Meaning
OPOS_SUCCESS DirectIO succeeded.
OPOS_E_CLOSED The device is closed.
OPOS_E_NOTCLAIMED The device is not claimed.
OPOS_E_DISABLED The device is disabled.
OPOS_E_ILLEGAL Specifies command number without a
function.
The parameter is illegal.
The device does not have Storage Memory
function.
Other Refer to the ResultCode item.
Requirement Open, Claim & Enable
2) CHK_DI_PRESCAN
Parameter Explanation
Command CHK_DI_PRESCAN
pData Not used. “0” is always entered.
pString Not used. Null character string is entered.
Explanation Executes pre-scanning.
Executes this command when the paper is inserted for
pre-scanning. If the paper is not inserted, or is inserted but
pre-scanning cannot be executed, an error occurs. When this
command is executed, control does not return until
pre-scanning is finished.
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