| Platform SDK: Exchange Server | 
The HrMAPIOpenSubfolderEx function opens a subfolder in the store from the hierarchical path name of the folder.
| Header file: | EDKMAPI.H | 
| Library: | EDKMAPI.LIB | 
| Unicode: | Yes | 
HRESULT HrMAPIOpenSubfolderEx( LPMAPIFOLDER lpRootFolder, TCHAR chSep, LPTSTR lpszFolderPath, LPMAPIFOLDER * lppFolder );
See Return Values.
Set lpRootFolder to NULL to open the root folder.
For information on the IMAPIFolder interface, see the MAPI Programmer's Reference.