DWORD, DWORD, DWORD, DWORD, DWORD, DWORD, PSID*);
typedef BOOL (__stdcall *PFNEqualSid)(PSID, PSID);
typedef void* (__stdcall *PFNFreeSid)(PSID);
-typedef BOOL (__stdcall *PFNIsUserAnAdmin)();
+typedef BOOL (__stdcall *PFNIsUserAnAdmin)(void);
#ifndef CSIDL_MYMUSIC
# define CSIDL_MYMUSIC 0x000D