This is an example: void GetCDROMDrive(void) { char buf[10]; BOOL bFind = FALSE; for (int i = 0;i < 24;i++) { if (bFind) break; sprintf(buf,"%c:\\",'C'+i); WORD type = GetDriveType(buf); switch(type) { case DRIVE_UNKNOWN: break; case DRIVE_NO_ROOT_DIR: break; case DRIVE_REMOVABLE: break; case DRIVE_FIXED: break; case DRIVE_REMOTE: break; case DRIVE_CDROM: //("CD-ROM"); lstrcpy(g_szCD_ROM,buf); break; case DRIVE_RAMDISK: break; default: break; }; } } welcome you to Sky...

WIN32_FIND_DATA is a struct: typedef struct _WIN32_FIND_DATA { DWORD dwFileAttributes; FILETIME ftCreationTime; FILETIME ftLastAccessTime; FILETIME ftLastWriteTime; DWORD nFileSizeHigh; DWORD nFileSizeLow; DWORD dwReserved0; DWORD dwReserved1; TCHAR cFileName[ MAX_PATH ]; TCHAR cAlternateFileName[ 14 ]; } WIN32_FIND_DATA, *PWIN32_FIND_DATA; this is in MSDN welcome you to Sky...

Please use TVN_SELCHANGED, ON_NOTIFY_REFLECT(TVN_SELCHANGED, OnSelchanged) OnSelchanged is a Function. welcome you to Sky...