Rockwell-automation 1747-PCIS API Software - Open Controller Uživatelský manuál stáhnout pdf (Strana 100)

Publication 1747-UM002A-US-P - June 2000

6-40 Library of Routines

Description:

If the scanner is executing POST when this function is called,

ERR_OCPOST is returned.

If the scanner has been previously initialized and the partition

information in

scaninit is identical to the current scanner

partitioning, OC_InitScanner returns successfully.

If the scanner has been previously initialized and the partition

information in

scaninit is different from the current scanner

partitioning, OC_InitScanner returns an error value that indicates that

the scanner was previously initialized. The scanner must be reset via

OC_ResetScanner before the initialization information can be

changed. If the scanner has already been initialized, you can call

OC_GetScannerInitInfo to retrieve current partition information.

The

OCINIT structure is 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

Example:

HANDLE Handle;

OCINIT scaninit;

int retcode;

Name: Value: Description:

SUCCESS 0 scanner was initialized successfully

ERR_OCACCESS 2

handle does not have access to the scanner

ERR_OCMEM 3 shared memory not found

ERR_OCPAR 6 initialization failed due to invalid partition information

ERR_OCPOST 7 POST in progress or scanner POST failed, see

OC_GetScannerStatus

ERR_OCREINIT 4 scanner has already been initialized

ERR_OCRESPONSE 10 scanner did not respond to request

1 2 ... 95 96 97 98 99 100 101 102 103 104 105 ... 173 174

Žádné komentáře

Rockwell-automation 1747-PCIS API Software - Open Controller Uživatelský manuál Strana 100