Drawing or detours?

[AeroMan]

Hello,
I have been working on this base for a long time..
I am not as good as much of you ppl in here, thats why i am here to ask the following:

If i test into D3D9 device it crashes if i add the following line ->

pReset				  = (oReset)				DetourFunction((PBYTE)vTable[16]	, (PBYTE)myReset	);
 		pEndScene			  = (oEndScene)				DetourFunction((PBYTE)vTable[42]	, (PBYTE)myEndScene	);

It goes to here ->

HRESULT WINAPI myReset ( PDEVICE pDevice, D3DPRESENT_PARAMETERS* pPresentationParameters )
{	
	pFont->OnLostDevice();
	pFont->OnResetDevice();

	pFont = NULL;

	return pReset(pDevice, pPresentationParameters);
}

HRESULT WINAPI myEndScene (PDEVICE pDevice)
{	
	if (pFont){
		RenderMenu(pDevice);
	}else{
		PostReset(pDevice);	
		RenderMenu(pDevice);
	}

	return pEndScene(pDevice);
}

Ive tooken this lines from 'TopBlast' credits to him..
If i inject into game it also crashes.

Does anyone know how to fix this?
Credits will be given..
I have tried different detours, other hooking but no difference.
I had recoded the Menu Navigation, Drawing,.. etc, no difference
Thanks already.

[Hell_Demon]

DWORD *hookVFunc(DWORD *vtable, int index, DWORD *newFunction)
{
	DWORD dwOldProt, *oldFunc;
	VirtualProtect(&vtable[index], 4, PAGE_EXECUTE_READWRITE, &dwOldProt);
	oldFunc=(DWORD*)vtable[index];
	vtable[index]=(DWORD)newFunction;
	VirtualProtect(&vtable[index], 4, dwOldProt, &dwOldProt);
	return oldFunc;
}

Then use as

pReset = (oReset)HookVFunc(vTable, 16, (DWORD*)myReset);

[AeroMan]

DWORD *hookVFunc(DWORD *vtable, int index, DWORD *newFunction)
{
	DWORD dwOldProt, *oldFunc;
	VirtualProtect(&vtable[index], 4, PAGE_EXECUTE_READWRITE, &dwOldProt);
	oldFunc=(DWORD*)vtable[index];
	vtable[index]=(DWORD)newFunction;
	VirtualProtect(&vtable[index], 4, dwOldProt, &dwOldProt);
	return oldFunc;
}

Then use as

pReset = (oReset)HookVFunc(vTable, 16, (DWORD*)myReset);

Thanks you, thanked