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dtSearch Text Retrieval Engine Programmer's Reference
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IOptions::PrivateDir Property
IOptions Interface
Syntax
IDL
__property BSTR PrivateDir;

IOptions Interface

A directory that the dtSearch Engine can use to store temporary files. Most applications should not set PrivateDir. 

PrivateDir, if non-blank, must be unique for each concurrent user of the dtSearch Engine. 

If the PrivateDir is blank, no directory will be reserved for temporary files, and dtSearch will use the Windows GetTempPath() call to get a directory for temporary files.