Rockwell-automation 1747-PCIS API Software - Open Controller Instrukcja Użytkownika Pobierz pdf (Strona 86)

Publication 1747-UM002A-US-P - June 2000

6-26 Library of Routines

OC_GetScannerInitInfo

This function retrieves current information about the shared memory

partitioning.

Syntax:

int OC_GetScannerInitInfo(HANDLE handle, OCINIT

*scaninit);

Parameters:

Description:

If the scanner has not been initialized, OC_GetScannerInitInfo returns

an error.

If the scanner has been previously initialized, an application can

retrieve the current scanner partitioning information with this function

instead of resetting and re-initializing the scanner.

The

OCINIT structure us defined as:

typedef struct tagOCINIT

{

WORD OutputImageSize;/* size in bytes */

WORD InputImageSize;/* size in bytes */

WORD HostRetentiveDataSize;/* size in bytes */

} OCINIT;

Return Value:

Considerations:

Supported in the DOS API library and the Windows NT API library

Parameter: Description:

handle Must be a valid handle returned from OC_OpenScanner

scaninit Points to the structure that contains the initialization information

this function returns

Name: Value: Description:

SUCCESS 0 scanner initialization information was retrieved successfully

ERR_OCACCESS 2

handle does not have access to the scanner

ERR_OCINIT 5 scanner has not been initialized, see OC_InitScanner

ERR_OCPOST 7 scanner POST failed, see OC_GetScannerStatus

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Rockwell-automation 1747-PCIS API Software - Open Controller Instrukcja Użytkownika Strona 86