D3D Hook Problem

#include <Windows.h>
#include <cstdio>
#include <d3d9.h>
#include <d3dx9.h>

#pragma once
#pragma comment(lib, "d3d9.lib")
#pragma comment(lib, "d3dx9.lib")

typedef HRESULT (__stdcall* EndScene_t)(LPDIRECT3DDEVICE9);
EndScene_t pEndScene;

const D3DCOLOR txtBlack = D3DCOLOR_ARGB(255,255,255,255); // Hoffentlich schwarz ;)

void *DetourFunc(BYTE *src, const BYTE *dst, const int len) //Gamedeception Hook Funktion
{
	BYTE *jmp = (BYTE*)malloc(len+5);
	DWORD dwback;
	VirtualProtect(src, len, PAGE_READWRITE, &dwback);
	memcpy(jmp, src, len); jmp += len;
	jmp[0] = 0xE9;
	*(DWORD*)(jmp+1) = (DWORD)(src+len - jmp) - 5;
	src[0] = 0xE9;
	*(DWORD*)(src+1) = (DWORD)(dst - src) - 5;
	VirtualProtect(src, len, dwback, &dwback);
	return (jmp-len);
}

void DrawRect(LPDIRECT3DDEVICE9 Device_t, int X, int Y, int L, int H, D3DCOLOR color)
{
	D3DRECT rect = {X, Y, X+L, Y+H};
	Device_t->Clear(1, &rect, D3DCLEAR_TARGET, color, 0, 0);
}


HRESULT __stdcall hkEndScene(LPDIRECT3DDEVICE9 pDevice) //Die neue Funktion, danach wird wieder zur normalen returnt.
{
	DrawRect(pDevice, 10, 10, 200, 200, txtBlack); //Rechteck zeichnen.
	return pEndScene(pDevice);

}

void InitHook() //Wird in einem neuen Thread gestartet.
{
	HMODULE hModule = NULL;
	while(!hModule)
	{
		hModule = GetModuleHandleA("d3d9.dll"); //Handle zur Dll holen, wird nicht gebraucht, stellt aber sicher das d3d9 läuft.
		Sleep(100); //Warten und dann wieder prüfen obs läuft.
	}

	pEndScene = (EndScene_t)DetourFunc((PBYTE) 0x7543279F, (PBYTE)hkEndScene, 5); //Hier wird gehookt ^^
}

extern "C"
int WINAPI DllMain(HINSTANCE hInst, DWORD reason, LPVOID reserverd)
{
	switch(reason)
	{
	case DLL_PROCESS_ATTACH:
		CreateThread(0, 0, (LPTHREAD_START_ROUTINE)InitHook, 0, 0, 0);
		break;
	}
	return true;
}

tempadd = dwFindPattern((DWORD)hModule, 0x128000, (PBYTE)"\xC7\x06\x00\x00\x00\x00\x89\x86\x00\x00\x00\x00\x89\x86", "xx????xx????xx");
memcpy(&VTableStart, (void*)(tempadd+2), 4);
dwEndScene = VTableStart[42];
pEndScene = (EndScene_t) DetourFunc((PBYTE) dwEndScene, (PBYTE)hkEndScene, 5);

void add_log(char* format, ...)
{
	HANDLE filehandle;
	DWORD dwReadBytes;
	char buffer[2048];
	char writebuffer[2048];
	va_list args;
	va_start(args, format);
	vsprintf (buffer, format, args);
	filehandle = CreateFile(L"IchMagZuege.txt", GENERIC_WRITE, 0, 0, OPEN_ALWAYS, 0, 0);
	SetFilePointer(filehandle, 0, 0, FILE_END);
	char date[18];
	_strdate(date);
	date[8] = ' ';
	_strtime(date+9);
	sprintf_s(writebuffer, 2048, "Log Added (%s): %s\r\n", date, buffer);
	WriteFile(filehandle, writebuffer, strlen(writebuffer), &dwReadBytes, 0);
	CloseHandle(filehandle);
}

if(a > 10)
    a = 10