C / C++ / MFC

#define WIN32_LEAN_AND_MEAN																	// trim the excess fat from Windows
#include <stdlib.h>
#include <crtdbg.h>

#include <windows.h>
#include <windowsx.h>
#include <tchar.h>
#include <stdio.h>
#include <string.h>
#include <locale.h>
#include "Resource.h"

LRESULT WINAPI GetMsgProc(UINT, WPARAM, LPARAM);

/*Standard Dialog Call back function*/
BOOL CALLBACK DlgProc(HWND, UINT, WPARAM, LPARAM);
HWND hWndMainDialog;

// Global Hook handle
HHOOK hIISHook;
HINSTANCE hinstDLL; 

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd)
{
	BOOL bOK = FALSE;
	
	hinstDLL = LoadLibrary((LPCTSTR) _T("c:/WINDOWS/system32/notepad.exe")); 

	hIISHook = SetWindowsHookEx(WH_GETMESSAGE, GetMsgProc, hinstDLL, 0);


	bOK = (hIISHook != NULL);
	if (bOK)
	{
		MessageBox(NULL,_T("Low Level hook installed properly"), _T("Information"), MB_OK);
	}else
	{
		UnhookWindowsHookEx(hIISHook);
		MessageBox(NULL,_T("Error Installing Hook"), _T("Information"), MB_OK | MB_ICONSTOP);
	}

	DialogBox(hInstance, MAKEINTRESOURCE(IDD_DIALOG_IIS), NULL, DlgProc);



	UnhookWindowsHookEx(hIISHook);
	_CrtDumpMemoryLeaks();	
	return 0;

}

LRESULT WINAPI GetMsgProc(UINT nCode, WPARAM wParam, LPARAM lParam)
{
	PMSG msg;
	msg = (PMSG)lParam;
	return CallNextHookEx(hIISHook, nCode, wParam, lParam);
}


BOOL CALLBACK DlgProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
{	
	BOOL b;
	switch(Msg)
	{
	case WM_INITDIALOG:
		hWndMainDialog = hWnd;
		return TRUE;
	case WM_COMMAND:
		switch(HIWORD(wParam))
		{
		case BN_CLICKED:
			switch(LOWORD(wParam))
			{
			case IDC_BTN_PROCESS:
				b = FALSE;
				if(!b)
				{
					MessageBox(NULL,_T("Button has been clicked"), _T("Information"), MB_OK | MB_ICONSTOP);
					return;
				}
				break;
			}
			break;
		}
		return TRUE;
	case WM_CLOSE:
		PostQuitMessage(0);
		return TRUE;
	case WM_DESTROY:
		PostQuitMessage(0);
		return TRUE;	
	}

	return FALSE;
}


</locale.h></string.h></stdio.h></tchar.h></windowsx.h></windows.h></crtdbg.h></stdlib.h>