int m_cause;
Specifies the cause of the exception. Its values are defined by a CArchiveException enumerated type. The enumerators are:
| Value | Meaning |
| CArchiveException::none | No error occurred. |
| CArchiveException::generic | Unspecified error. |
| CArchiveException::readOnly | Tried to write into an archive opened for loading. |
| CArchiveException::endOfFile | Reached end of file while reading an object. |
| CArchiveException::writeOnly | Tried to read from an archive opened for storing. |
| CArchiveException::badIndex | Invalid file format. |
| CArchiveException::badClass | Tried to read an object into an object of the wrong type. |
| CArchiveException::badSchema | Tried to read an object with a different version of the class. |
Note:
These CArchiveException cause enumerators are distinct from the CFileException cause enumerators.
extern CFile f;
TRY
{
CArchive ar( &f, CArchive::store );
}
CATCH( CArchiveException, e)
{
if( e->m_cause == CArchiveException::readOnly )
printf( "ERROR: Archive is read-only\\n" );
}