Drawing in Direct3D - Introduction to 3D Game Programming with DirectX 9.0 - page 87

// create vertex and index buffers
Device->CreateVertexBuffer(
8 * sizeof(Vertex),
D3DUSAGE_WRITEONLY,
Vertex::FVF,
D3DPOOL_MANAGED,
&VB,
0);
Device->CreateIndexBuffer(
36 * sizeof(WORD),
D3DUSAGE_WRITEONLY,
D3DFMT_INDEX16,
D3DPOOL_MANAGED,
&IB,
0);
// fill the buffers with the cube data
Vertex* vertices;
VB->Lock(0, 0, (void**)&vertices, 0);
// vertices of a unit cube
vertices[0] = Vertex(-1.0f, -1.0f, -1.0f);
vertices[1] = Vertex(-1.0f, 1.0f, -1.0f);
vertices[2] = Vertex( 1.0f, 1.0f, -1.0f);
vertices[3] = Vertex( 1.0f, -1.0f, -1.0f);
vertices[4] = Vertex(-1.0f, -1.0f, 1.0f);
vertices[5] = Vertex(-1.0f, 1.0f, 1.0f);
vertices[6] = Vertex( 1.0f, 1.0f, 1.0f);
vertices[7] = Vertex( 1.0f, -1.0f, 1.0f);
VB->Unlock();
// define the triangles of the cube:
WORD* indices = 0;
IB->Lock(0, 0, (void**)&indices, 0);
// front side
indices[0] = 0; indices[1] = 1; indices[2] = 2;
indices[3] = 0; indices[4] = 2; indices[5] = 3;
// back side
indices[6] = 4; indices[7] = 6; indices[8] = 5;
indices[9] = 4; indices[10] = 7; indices[11] = 6;
// left side
indices[12] = 4; indices[13] = 5; indices[14] = 1;
indices[15] = 4; indices[16] = 1; indices[17] = 0;
// right side
indices[18] = 3; indices[19] = 2; indices[20] = 6;
indices[21] = 3; indices[22] = 6; indices[23] = 7;
// top
indices[24] = 1; indices[25] = 5; indices[26] = 6;
indices[27] = 1; indices[28] = 6; indices[29] = 2;