[Dev-C++] Access to filesystem

[<at...@su...>]

just doing c++ exercises, while learning, and need to read? or open? all =
files of a directory, but got no idea who to manage it.
while searching the libary, I found the following hits for "filesystem"

regstr.h:
- REGSTR_PATH_FILESYSTEM =
TEXT("System\\CurrentControlSet\\Control\\FileSystem")
- REGSTR_PATH_FILESYSTEM_NOVOLTRACK =
TEXT("System\\CurrentControlSet\\Control\\FileSystem\\NoVolTrack")
- REGSTR_PATH_CDFS =
TEXT("System\\CurrentControlSet\\Control\\FileSystem\\CDFS")
- REGSTR_PATH_CDFS =
TEXT("System\\CurrentControlSet\\Control\\FileSystem\\CDFS")REGSTR_VAL_WI=
N31FILESYSTEM TEXT("Win31FileSystem")

shlobj.h:
- #define SFGAO_FILESYSTEM 0x40000000L

winnt.h:
- #pragma pack(pop)
typedef enum _CM_SERVICE_NODE_TYPE {
 DriverType=3DSERVICE_KERNEL_DRIVER,
 FileSystemType=3DSERVICE_FILE_SYSTEM_DRIVER,
 Win32ServiceOwnProcess=3DSERVICE_WIN32_OWN_PROCESS,
 Win32ServiceShareProcess=3DSERVICE_WIN32_SHARE_PROCESS,
 AdapterType=3DSERVICE_ADAPTER,
 RecognizerType=3DSERVICE_RECOGNIZER_DRIVER
} SERVICE_NODE_TYPE;

and some more in deeper files.
Is this the right way, and if, where will I get informations how to =
handle?

even http://cplus.about.com/library/blcplustut.htm got no hits.

thanx

regards
Achim