Rockwell Automation 1747-PCIS API Software - Open Controller - Manual (Page 63)

Publication 1747-UM002A-US-P - June 2000
Library of Routines 6-3
OC_CloseScanner This function must always be called before exiting the application.
Syntax:
int OC_CloseScanner(HANDLE handle);
Parameters:
Description:
This function releases control of the scanner device, releases the
interrupt assigned by OC_OpenScanner, and disables the segment
address assignment.
Return Value:
Considerations:
Supported in the DOS API library and the Windows NT API library
Example:
HANDLE Handle;
int retcode;
retcode = OC_CloseScanner( Handle );
Parameter: Description:
handle Must be a valid handle returned from OC_OpenScanner
ATTENTION
!
The system might become unstable if you don’t call
OC_CloseScanner before exiting the application.
Name: Value: Description:
SUCCESS 0 scanner was closed successfully
ERR_OCACCESS 2 handle does not have access to the scanner