Hooking

_declspec(naked) void MyMid()
{
	_asm mov edi,edi;
	_asm push ebp;
	_asm mov ebp,esp;
	_asm mov eax,dword ptr [ebp + 0x8];
	_asm mov pDevice,eax;
	_asm jmp back;
}

BOOL WINAPI DllMain ( HINSTANCE hDll, DWORD dwReason, LPVOID lpReserved )
{
	DisableThreadLibraryCalls(hDll);
	If dwReason == DLL_PROCESS_ATTACH Then
		DWORD hD3D  = (DWORD)LoadLibrary("d3d9.dll");

		DWORD HookedD3D	= FindPattern(hD3D, 0x128000, (PBYTE)"\x8B\xFF\x55\x8B\xEC\x5D\x00\x00\x00\x00\x00\xCC\xCC\xCC\xCC\xCC\x8B\xFF\x55\x8B\xEC\x51", "xxxxxx?????xxxxxxxxxxx"); //XP OS

		if(!HookedD3D)
		{
			DWORD HookedD3DA	= FindPattern(hD3D, 0x128000, (PBYTE)"\xC3\x90\x90\x90\x90\x90\x8B\xFF\x55\x8B\xEC\x5D\xEB\x00\x90\x90\x90\x90\x90\x8B\xFF\x55\x8B\xEC\x6A\xFF", "xxxxxxxxxxxxx?xxxxxxxxxxxx"); //Win 7 OS
			HookedD3D			= HookedD3DA +  0x6;
		}

		back		= HookedD3D  + 5;

		DetourFunc((PBYTE)(HookedD3D), (PBYTE)MyMid,5);
	_End
	return TRUE;
}