FASTCONFIG

Summary

The FASTCONFIG structure provides information about a scan configuration to be tested or a scan configuration that is the result of testing.

Syntax

typedef struct _FASTCONFIG 
{ 
   L_UINT   uStructSize; 
   L_UINT   uTransferMode; 
   L_INT    nFileFormat; 
   L_UINT32 ulBufferSize; 
   L_UINT   uTime; 
   L_INT    nBitsPerPixel; 
   L_BOOL   bSuccess; 
} FASTCONFIG, * pFASTCONFIG; 

Members

L_UINT uStructSize

Size of this structure in bytes, for versioning. Use the sizeof() operator to calculate this value.

L_UINT uTransferMode

Transfer mode for the scan configuration(s). The possible values are:

L_INT nFileFormat

Output file format. Valid values depend on the transfer mode used.

• For valid values for the File transfer mode, refer to the values for the uFileFormat member of the TRANSFEROPTIONS structure.
• For valid values for the Memory and Native transfer modes, refer to Formats of Output Files.

L_UINT32 ulBufferSize

Determines the buffer size that will be used with the buffer transfer mode. If this value is 0, then use the twain driver preferred buffer size.

L_UINT uTime

The amount of time required to scan the pages used for testing the scan configuration. The number of pages depends on how many pages the user loads in the scanner when testing a scan configuration. The same pages should be used for each test.

L_INT nBitsPerPixel

Bits per pixel that will be used.

L_BOOL bSuccess

Specifies whether the configuration being tested succeeded. Possible values are:

Comments

pFASTCONFIG is a pointer to a FASTCONFIG structure. Where the function parameter type is pFASTCONFIG, you can declare an FASTCONFIG variable, update the structure's fields, and pass the variable's address in the parameter. Declaring a pFASTCONFIG variable is necessary only if your program requires a pointer.

Usage

• L_TwainFindFastConfig
• L_TwainFreeScanConfig
• L_TwainGetScanConfigs