// Initialize four vertices 
	CUSTOMTILEVERTEX vertices[] =
	{
		{ 0.0f, 0.0f, 0.0f, D3DCOLOR_XRGB(255,  0,255) }, // x, y, z, color
		{ 0.0f, 3.0f, 0.0f, D3DCOLOR_XRGB(  0,255,  0) },
		{ 3.0f, 3.0f, 0.0f, D3DCOLOR_XRGB(  0,255,255) },
		{ 3.0f, 0.0f, 0.0f, D3DCOLOR_XRGB(  0,255,  0) } 
	};

	// Create the vertex buffer. Here we are allocating enough memory
	// (from the default pool) to hold all our 3 custom vertices. We also
	// specify the FVF, so the vertex buffer knows what data it contains.
	if( FAILED( m_pd3dDevice->CreateVertexBuffer( 4*sizeof(CUSTOMTILEVERTEX),
		D3DUSAGE_WRITEONLY, D3DFVF_CUSTOMTILEVERTEX,
		D3DPOOL_DEFAULT, &m_pVertexBuffer , NULL ) ) )
	{
		MessageBox(NULL, "Couldn't create vertex buffer!!", "ERROR initializing VertexBuffer", MB_ICONERROR);
		return E_FAIL;
	}

	// Now we fill the vertex buffer. To do this, we need to Lock() the VB to
	// gain access to the vertices. This mechanism is required because vertex
	// buffers may be in device memory.
	VOID* pVertices;
	if( FAILED( m_pVertexBuffer->Lock( 0, sizeof(vertices), (void**)&pVertices, 0 ) ) ){
		MessageBox(NULL, "Couldn't lock vertex buffer!!", "ERROR working with VertexBuffer", MB_ICONERROR);
		return E_FAIL;
	}
	memcpy( pVertices, vertices, sizeof(vertices) );
	m_pVertexBuffer->Unlock();


// creating an indexbuffer
	if (FAILED(m_pd3dDevice->CreateIndexBuffer(
		6*sizeof(WORD),
		D3DUSAGE_WRITEONLY,
		D3DFMT_INDEX16,
		D3DPOOL_DEFAULT,
		&m_pIndexBuffer, 
		NULL))) {

			MessageBox(NULL, "Couldn't create index buffer!!", "ERROR working with IndexBuffer", MB_ICONERROR);
			return E_FAIL;
		}

		// specifying triangles
		// 1-2
		// |/|
		// 0-3
		// top-left
		WORD indices[] = {

			{0}, {1}, {2}, 
			{0}, {2}, {3}
		};
		
		VOID* pIndex;
		if(SUCCEEDED(m_pIndexBuffer->Lock(0, sizeof(indices), (void**)&pIndex, 0))){
			memcpy( pIndex, indices, sizeof(indices) );
			m_pIndexBuffer->Unlock();
			return S_OK;
		}

		return E_FAIL;


if(SUCCEEDED(BeginRender())){

		if(D3DERR_INVALIDCALL == (m_pd3dDevice->SetStreamSource(0, m_pVertexBuffer, 0, sizeof(CUSTOMTILEVERTEX)))){
			MessageBox(NULL, "SetSteamSource failed!!!", "ERROR", MB_ICONERROR);
			EndRender();
			return E_FAIL;

		}
		if(D3DERR_INVALIDCALL == (m_pd3dDevice->SetFVF(D3DFVF_CUSTOMTILEVERTEX))){
			MessageBox(NULL, "SetFVF failed!!!", "ERROR", MB_ICONERROR);
			EndRender();
			return E_FAIL;
		}
		if(D3DERR_INVALIDCALL == (m_pd3dDevice->SetIndices(m_pIndexBuffer))){
			MessageBox(NULL, "SetIndices failed", "ERROR", MB_ICONERROR);
			EndRender();
			return E_FAIL;
		}
		if(D3DERR_INVALIDCALL == (m_pd3dDevice->DrawIndexedPrimitive(D3DPT_TRIANGLESTRIP, 0, 0, 4, 0, 2))){
			MessageBox(NULL, "DrawPrimitive failed!!!", "ERROR", MB_ICONERROR);
			EndRender();
			return E_FAIL;
		}
	}

// A structure for our custom vertex typestruct CUSTOMTILEVERTEX{	FLOAT x, y, z; // The transformed position for the vertex	D3DCOLOR color;     // The vertex color};// Our custom FVF, which describes our custom vertex structure#define D3DFVF_CUSTOMTILEVERTEX (D3DFVF_XYZ|D3DFVF_DIFFUSE)