| excSMLoadFileFailed |
The attempt to load the Source Manager DLL (TWAIN_32.DLL) failed.
This indicates that TWAIN is not installed on the PC. |
| excSMGetProcAddressFailed |
The TWAIN_32.DLL was loaded, but the entry point could not be
found in the module. This indicates that the TWAIN_32.DLL is not
the correct DLL, and is perhaps renamed from something else. |
| excSMOpenFailed |
The TWAIN_32.DLL was loaded. However, the attempt to open the
TWAIN Source Manager failed. The return code is in the exc_value. Check
this value against the TWRC_ values in the TWAIN specification. |
| excDSOpenFailed |
The attempt to open the data source failed. The return code is given
in the exc_value which can be checked against the TWRC_ values in the
TWAIN specification. |
| excDSNoImageAvailable |
An attempt was made to retrieve an image from the Source when there
was none available, i.e. the system is not in state 6. |
| excDSTransferCancelled |
The user aborted the image transfer using the TWAIN source user interface. |
| excCapabilityFormatNotSupported |
An attempt was made to set a capability using a format which is not
supported by the twainmodule. |
| excBufferOverrun |
The call to the DSM_Entry() resulted in an overrun of the programs buffer.
The exc_value gives the triplet of the call. |
| excGlobalHeap |
An error occurred using the global heap. Check the validity of the
handle passed to the function. |
| excImageFormat |
The twainmodule could not support the image format passed. This is
due to the image being compressed. |
| excFileError |
There was an error opening a file. This error is raised in the DIB conversion
functions. |
| excMemoryError |
There was an error allocating memory in the twainmodule. See the exc_value
for details of the memory size. |
| excParamError |
There is an error in the type of a parameter to the function. Ensure that
the TWTY_ value matches the parameter type passed in. |
| excInternalError | An internal logic error occurred. See the
exc_value for more detail. |
| excTWCC_SUCCESS | It worked! |
| excTWCC_BUMMER | Failure due to unknown causes |
| excTWCC_LOWMEMORY | Not enough memory to perform operation |
| excTWCC_NODS | No Data Source |
| excTWCC_MAXCONNECTIONS | DS is connected to max possible applications |
| excTWCC_OPERATIONERROR | DS or DSM reported error, application shouldn't |
| excTWCC_BADCAP | Unknown capability |
| excTWCC_BADPROTOCOL | Unrecognized MSG DG DAT combination |
| excTWCC_BADVALUE | Data parameter out of range |
| excTWCC_SEQERROR | DG DAT MSG out of expected sequence |
| excTWCC_BADDEST | Unknown destination Application/Source in DSM_Entry |
| excTWCC_CAPUNSUPPORTED | Capability not supported by source |
| excTWCC_CAPBADOPERATION | Operation not supported by capability |
| excTWCC_CAPSEQERROR | Capability has dependancy on other capability |
| excTWCC_DENIED | File System operation is denied (file is protected) |
| excTWCC_FILEEXISTS | Operation failed because file already exists |
| excTWCC_FILENOTFOUND | File not found |
| excTWCC_NOTEMPTY | Operation failed because directory is not empty |
| excTWCC_PAPERJAM | The feeder is jammed |
| excTWCC_PAPERDOUBLEFEED | The feeder detected multiple pages |
| excTWCC_FILEWRITEERROR | Error writing the file (meant for things like disk full conditions) |
| excTWCC_CHECKDEVICEONLINE | The device went offline prior to or during this operation |
| excTWCC_UNKNOWN | Source specific Value |
