Primitives and light source problem?

struct stD3DVertex{	float x, y, z;	D3DVECTOR normal;	unsigned long color;};#define D3DFVF_VERTEX (D3DFVF_XYZ | D3DFVF_NORMAL | D3DFVF_DIFFUSE)

stD3DVertex objData[] ={    { 420, 150, 0.5f, 1, 0, 1, D3DCOLOR_XRGB(255, 255, 255), },    { 420, 350, 0.5f, 1, 0, 1, D3DCOLOR_XRGB(255, 255, 255), },    { 220, 150, 0.5f, 1, 0, 1, D3DCOLOR_XRGB(255, 255, 255), },    { 220, 350, 0.5f, 1, 0, 1, D3DCOLOR_XRGB(255, 255, 255), },};

g_D3DDevice->SetTransform(D3DTS_VIEW, &g_ViewMatrix);;g_D3DDevice->SetStreamSource(0, g_VertexBuffer, 0, sizeof(stD3DVertex));g_D3DDevice->SetFVF(D3DFVF_VERTEX);g_D3DDevice->DrawPrimitive(D3DPT_TRIANGLESTRIP, 0, 2);

Error	1	error C2676: binary '-' : 'stD3DVertex' does not define this operator or a conversion to a type acceptable to the predefined operator

D3DXMATRIX matProj;float w = 640.0f;   // Max X coordinate for viewportfloat h = 480.0f;   // Max X coordinate for viewportD3DXMatrixOrthoOffCenterLH(&matProj, 0.0f, w, h, 0.0f, 0.1f, 1000.0f);pDevice->SetTransform(D3DTS_PROJECTION, &matProj);

D3DXMATRIX g_projection;D3DXMATRIX g_ViewMatrix;D3DXMATRIX g_WorldMatrix;D3DMATERIAL9 g_material;LPDIRECT3DVERTEXBUFFER9 g_VertexBuffer = NULL;struct stD3DVertex{	D3DXVECTOR3 pos;	D3DXVECTOR3 nor;};#define D3DFVF_VERTEX (D3DFVF_XYZ | D3DFVF_NORMAL)

D3DXMatrixPerspectiveFovLH(&g_projection, 45.0f,    WINDOW_WIDTH/WINDOW_HEIGHT, 0.1f, 1000.0f);g_D3DDevice->SetTransform(D3DTS_PROJECTION, &g_projection);

stD3DVertex objData[3];objData[0].pos = D3DXVECTOR3 (0.0f, 0.2f, 0);objData[1].pos = D3DXVECTOR3 (0.2f, -0.2f, 0);objData[2].pos = D3DXVECTOR3 (-0.2f, -0.2f, 0);	//Vector for normalsD3DXVECTOR3 n0, n1, n2;D3DXVECTOR3 r1, r2;//computing for n0r1 = D3DXVECTOR3(-0.2f, -0.2f, 0.0f) - D3DXVECTOR3(0.0f, 0.2f, 0.0f);r2 = D3DXVECTOR3(0.2f, -0.2f, 0.0f) - D3DXVECTOR3(0.0f, 0.2f, 0.0f);D3DXVec3Cross (&n0, &r1, &r2);D3DXVec3Normalize (&n0, &n0);objData[0].nor = n0;//computing for n1r1 = D3DXVECTOR3(0.0f, 0.2f, 0.0f) - D3DXVECTOR3(0.2f, -0.2f, 0.0f);r2 = D3DXVECTOR3(-0.2f, -0.2f, 0.0f) - D3DXVECTOR3(0.2f, -0.2f, 0.0f);D3DXVec3Cross (&n1, &r1, &r2);D3DXVec3Normalize (&n1, &n1);objData[1].nor = n1;//computing for n2r1 = D3DXVECTOR3(0.2f, -0.2f, 0.0f) - D3DXVECTOR3(-0.2f, -0.2f, 0.0f);r2 = D3DXVECTOR3(0.0f, 0.2f, 0.0f) - D3DXVECTOR3(-0.2f, -0.2f, 0.0f);D3DXVec3Cross (&n2, &r1, &r2);D3DXVec3Normalize (&n2, &n2);objData[2].nor = n2;// Create the vertex buffer.if(FAILED(g_D3DDevice->CreateVertexBuffer(sizeof(objData), 0,    D3DFVF_VERTEX, D3DPOOL_DEFAULT, &g_VertexBuffer, NULL)))    return false;// Fill the vertex buffer.void *ptr;if(FAILED(g_VertexBuffer->Lock(0, sizeof(objData), (void**)&ptr, 0)))    return false;memcpy(ptr, objData, sizeof(objData));g_VertexBuffer->Unlock();

//Set default rendering statesg_D3DDevice->SetRenderState(D3DRS_LIGHTING, TRUE);g_D3DDevice->SetRenderState(D3DRS_AMBIENT, D3DCOLOR_COLORVALUE(0.3f, 0.3f,    0.3f, 1.0f));//Setup the light sourceg_light.Type = D3DLIGHT_POINT;g_light.Position = D3DXVECTOR3(move.x, 0.0f, -5.0f);g_light.Diffuse.r = 127;g_light.Diffuse.g = 127;g_light.Diffuse.b = 1;g_light.Attenuation0 = 0.5f;g_light.Range = 5.0f;//Register the lightg_D3DDevice->SetLight(0, &g_light);g_D3DDevice->LightEnable(0, TRUE);//Setup the material properties for the objectsZeroMemory(&g_material, sizeof(D3DMATERIAL9));g_material.Diffuse.r = g_material.Ambient.r = 0.6f;g_material.Diffuse.g = g_material.Ambient.g = 0.6f;g_material.Diffuse.b = g_material.Ambient.b = 0.7f;g_material.Specular.r = 0.4f;g_material.Specular.g = 0.4f;g_material.Specular.b = 0.4f;g_material.Power = 8.0f;//Define camera informationD3DXVECTOR3 cameraPos(0.0f, 0.0f, -0.8f);D3DXVECTOR3 lookAtPos(0.0f, 0.0f, 0.0f);D3DXVECTOR3 upDir(0.0f, 1.0f, 0.0f);//Build view matrixD3DXMatrixLookAtLH(&g_ViewMatrix, &cameraPos, &lookAtPos, &upDir);

//Apply the view (camera)g_D3DDevice->SetTransform(D3DTS_VIEW, &g_ViewMatrix);;//Render triangle primitiveg_D3DDevice->SetStreamSource(0, g_VertexBuffer, 0, sizeof(stD3DVertex));g_D3DDevice->SetFVF(D3DFVF_VERTEX);g_D3DDevice->SetMaterial(&g_material);g_D3DDevice->DrawPrimitive(D3DPT_TRIANGLESTRIP, 0, 1);

[source land="c"]stD3DVertex objData[3];objData[0].pos = D3DXVECTOR3 (0.0f, 0.2f, 0);objData[1].pos = D3DXVECTOR3 (0.2f, -0.2f, 0);objData[2].pos = D3DXVECTOR3 (-0.2f, -0.2f, 0);objData[0].nor = D3DXVECTOR3(0, -1, 0);objData[1].nor = D3DXVECTOR3(1, -1, 0);objData[2].nor = D3DXVECTOR3(-1, -1, 0);