// vertex structurestruct sVertex{	float	x, y, z;	// 3D - coordinates};#define VertexFVF (D3DFVF_XYZ)// init method// creating interface	if((m_pd3d9 = Direct3DCreate9(D3D_SDK_VERSION)) == NULL){		MessageBox(NULL, "Couldn't create interface!!", "ERROR initializing DirectX", MB_ICONERROR);		return E_FAIL;	}	// checking for hardware vertex processing	m_pd3d9->GetDeviceCaps(D3DADAPTER_DEFAULT,		D3DDEVTYPE_HAL,		&m_caps		);	// is hardware vertex processing possible	int vp = 0;	if (m_caps.DevCaps && D3DDEVCAPS_HWTRANSFORMANDLIGHT){		vp = D3DCREATE_HARDWARE_VERTEXPROCESSING;	} else {		vp = D3DCREATE_SOFTWARE_VERTEXPROCESSING;	}	// setting present parameters	m_d3dpp.AutoDepthStencilFormat = D3DFMT_D24S8;					// The format of the depth/stencil buffer					m_d3dpp.BackBufferCount =	1;									// number of buffers	m_d3dpp.BackBufferFormat = D3DFMT_A8R8G8B8;						// pixel format	m_d3dpp.BackBufferHeight = height;						// height of back buffer	m_d3dpp.BackBufferWidth = width;							// width of back buffer	m_d3dpp.EnableAutoDepthStencil = true;							// Set to true to have Direct3D create and maintain the depth/stencil buffer automatically.	m_d3dpp.Flags = D3DPRESENTFLAG_DISCARD_DEPTHSTENCIL;			// the depth/stencil buffer will be discarded after back buffer has been presented	m_d3dpp.FullScreen_RefreshRateInHz = 0;							// the refresh rate is set to default. If windowed set to 0 else D3DPRESENT_RATE_DEFAULT or like	m_d3dpp.hDeviceWindow = hWnd;									// which window to present in	m_d3dpp.MultiSampleType = D3DMULTISAMPLE_NONE;					// no multi sampling	m_d3dpp.MultiSampleQuality = 0;									// quality set to zero	m_d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;	// when to present back buffer	m_d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;						// when buffers are swapped front buffer is discarded	m_d3dpp.Windowed = true;	// creates the device interface	if(FAILED(m_pd3d9->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd, vp, &m_d3dpp, &m_pd3dDevice))){		MessageBox(NULL, "Couldn't create device!!", "ERROR initializing DirectX", MB_ICONERROR);		return E_FAIL;	}		// creating vertex buffer	HRESULT hr = m_pd3dDevice->CreateVertexBuffer(		3*sizeof(sVertex),	// length is equal to the size of four structures of type sTileTextureVertex  		D3DUSAGE_WRITEONLY,	// usage - how to treat memory, 0 is default		VertexFVF,			// which vertex buffer format		D3DPOOL_DEFAULT,	// where in memory to proces vertices		&m_pVertexbuffer,	// pointer to pointer to vertex buffer 		NULL		);	if (FAILED(hr)) {		MessageBox(NULL, "Couldn't create vertex buffer!!", "ERROR initializing DirectX", MB_ICONERROR);		return E_FAIL;	}		//filling vertex buffer	sVertex vertices[3] = { 		{-1.0f, 0.0f, 2.0f},		{0.0f, 1.0f, 2.0f},		{1.0f, 0.0f, 2.0f}	};	BYTE* ptr;	if(SUCCEEDED(m_pVertexbuffer->Lock(0, 0,(void **)&ptr, NULL))){		memcpy(ptr, vertices, sizeof(vertices));		m_pVertexbuffer->Unlock();	}	// position and aim the camera	D3DXVECTOR3 position(0.0f, 0.0f, -5.0f);	D3DXVECTOR3 target(0.0f, 0.0f, 0.0f);	D3DXVECTOR3 up(0.0f, 1.0f, 0.0f);	D3DXMATRIX V;	D3DXMatrixLookAtLH(&V, &position, &target, &up);		m_pd3dDevice->SetTransform(D3DTS_VIEW, &V);		// set projection matrix	D3DXMATRIX proj;		D3DXMatrixPerspectiveFovLH(		&proj,		D3DX_PI * 0.5f, // 90 - degree		(float)width / (float)height,		1.0f,		1000.0f);		m_pd3dDevice->SetTransform(D3DTS_PROJECTION, &proj);		// set the render states	m_pd3dDevice->SetRenderState(D3DRS_FILLMODE, D3DFILL_SOLID);	//m_pd3dDevice->SetRenderState(D3DRS_CULLMODE, D3DCULL_CW);// render method// clear screen with a certain color	m_pd3dDevice->Clear( 0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(196,225,255), 1.0f, 0L );	if(SUCCEEDED(m_pd3dDevice->BeginScene())){				m_pd3dDevice->SetStreamSource(0, m_pVertexbuffer, 0, sizeof(sVertex));		m_pd3dDevice->SetFVF(VertexFVF);		m_pd3dDevice->DrawPrimitive(D3DPT_TRIANGLELIST, 0, 1);		m_pd3dDevice->EndScene();	}		// present content of back buffer 	m_pd3dDevice->Present(NULL,NULL,NULL,NULL);	return S_OK;

[source = cpp]//for a single vertex.{-1.0f, 1.0f, -1.0f, D3DCOLOR_XRGB(0, 0, 255) //for a blue vertex.

[source = cpp]#define VertexFVF (D3DFVF_XYZ|D3DFVF_DIFFUSE)

[source = cpp]#include "CWindow.h"#include "CDirect3d.h"#include <d3d9.h>#include <d3dx9.h>#include <d3dx9math.h>#include <math.h>#include <windows.h>#pragma comment(lib, "d3dx9.lib")#pragma comment(lib, "d3d9.lib")#pragma comment(lib, "d3dx.lib")#pragma comment(lib, "DxErr9.lib")#pragma comment(lib, "dxguid.lib")#pragma comment(lib, "dinput8.lib")CWindow Window;CDirect3d Direct3d;IDirect3DVertexBuffer9* vb;HRESULT hResult;D3DXMATRIX matWorld;struct VERTEX{	float x, y, z;	DWORD dwColor;	enum		{			FVF = D3DFVF_XYZ | D3DFVF_DIFFUSE		};};bool InitDirect3d(){	Direct3d.Create(&Window);	D3DXMatrixTranslation(&matWorld, 0.0f, 0.0f, 40.0f);	if(FAILED(hResult = Direct3d.GetDevice()->SetTransform(D3DTS_VIEW, &matWorld)))		MessageBox(NULL, "Failed - Set Transform", "ERROR", MB_OK);	if(FAILED(hResult = Direct3d.GetDevice()->SetRenderState(D3DRS_LIGHTING, false)))		MessageBox(NULL, "Set Render State(LIGHTING)", "ERROR", MB_OK);	if(FAILED(hResult = Direct3d.GetDevice()->SetRenderState(D3DRS_CULLMODE, D3DCULL_CCW)))		MessageBox(NULL, "Set Render State(CULLMODE)", "ERROR", MB_OK);	//Zenable false	Direct3d.GetDevice()->SetRenderState(D3DRS_LIGHTING, FALSE);	Direct3d.GetDevice()->SetRenderState(D3DRS_ZENABLE, FALSE);	VERTEX* pData;	VERTEX triangle[] = {{-1.0f, 0.0f, 0.0f, 0x0000ff},						 { 0.0f, 1.0f, 0.0f, 0x0000ff},						 { 1.0f, 0.0f, 0.0f, 0x0000ff}};	Direct3d.GetDevice()->CreateVertexBuffer(sizeof(VERTEX) * 3, D3DUSAGE_WRITEONLY, VERTEX::FVF, D3DPOOL_MANAGED, &vb, NULL);	vb->Lock(0, 0, (void**)&pData, 0);		memcpy(pData, triangle, sizeof(VERTEX) * 3);	vb->Unlock();	return true;}	void Update(){}void Render(){	Direct3d.BeginRender();	Direct3d.GetDevice()->SetStreamSource(0, vb, 0, sizeof(VERTEX));	Direct3d.GetDevice()->SetFVF(VERTEX::FVF);	Direct3d.GetDevice()->DrawPrimitive(D3DPT_TRIANGLESTRIP, 0, 2);	Direct3d.FinishRender();}void Release(){	Direct3d.Release();}int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR cmdLine, int cmdShow){	Window.Create(hInstance, "::Xilath::", "window", 800, 600);	InitDirect3d();	while(1)	{		if(Window.CheckMessages() == -1)			break;		Update();		Render();	}	Direct3d.Release();	return 0;}