void L2Ex::HookEnterWorld()
{
	WriteServerHook(CALL,(BYTE *)0x84D222, (DWORD *)EWHandler, 0);
}


void EWHandler(CCreature *pUser)
{
	pUser->UValidateHenna();
	pUser->ShowHTML(L"", L"<html><head><body>hello:<br></body></html>", 0);
}


void L2Ex::WriteServerHook(BYTE bType, BYTE *pAddress, DWORD *pFunction, BYTE bNops)
{
	int iSizeBuffer = 5 + bNops;
	BYTE *bBuffer = new BYTE(iSizeBuffer);
	bBuffer[0] = bType;
	*(DWORD *)(bBuffer + 1) = (DWORD)pFunction - (DWORD)(pAddress+5);
	int i = 5;
	while (bNops > 0)
	{
		bBuffer[i] = NOP;
		++i;
		--bNops;
	}

	WriteServerMemory((BYTE *)pAddress, (LPCVOID)&bBuffer, iSizeBuffer);

	delete[] bBuffer;
}




CCreature.h



#ifndef _CCREATURE_
	#define _CCREATURE_

#ifndef _USER_
#include "User.h"
#endif

class CCreature
{
public:
	CCreature();

	void ShowHTML(wchar_t *filename, wchar_t *buffer, int classID)
	{
		typedef void (__thiscall *_SHOW_HTML)(CCreature *, wchar_t *, wchar_t *, int);
		_SHOW_HTML _ShowHTML = (_SHOW_HTML)0x80A060;

		_ShowHTML(this, filename, buffer, classID);
	}

	void UValidateHenna()
	{
		typedef void (__thiscall *_SHOW_HTML)(CCreature *);
		_SHOW_HTML _ShowHTML = (_SHOW_HTML)0x809550;

		_ShowHTML(this);
	}

	~CCreature();
};

#endif