In reference to the main tutorial series on nexe. I have a couple of questions about it, mainly on the vertices and the vertex buffer. Why are there two vertex classes i.e. CVertex + CProcessedVertex Instead of having CProcessedVertex can''t it all be done in the CVertex class, i.e. changing the create function to.

void Create(float fp_fX,float fp_fY,float fp_fZ, float fp_fRHW,DWORD dwColor,float fp_fU, float fp_fV); 

Meaning that only one FVF would be required??

const DWORD D3DFVF_CVertex = D3DFVF_XYZRHW | D3DFVF_TEX1 | D3DFVF_DIFFUSE; 

And then when one wanted to create a vertex it could be done like so.

CVertex* vtxQuad;
Vertices.Create(&d3dWindow,4,D3DFVF_CVertex,
              D3DPT_TRIANGLESTRIP,sizeof(CVertex));
vtxQuad = (CVertex*)Vertices.GetMemoryPointer();
 
vtxQuad[0].Create(0.0f, 0.0f, 0.0f, 1.0f, D3DCOLOR_XRGB(255, 0, 0), 1.0f,0.0f);
vtxQuad[1].Create(0.0f, 1.0f,0.0f, 1.0f, D3DCOLOR_XRGB(0, 255, 0), 0.0f,1.0f);
vtxQuad[2].Create(1.0f,1.0f,0.0f, 1.0f, D3DCOLOR_XRGB(0, 0, 255), 1.0f,0.0f);
vtxQuad[3].Create(1.0f,0.0f, 0.0f, 1.0f, D3DCOLOR_XRGB(0, 0, 255), 1.0f,0.0f); 

In seans code he trys to fill the vertex buffer after its been locked.

d3dWindow.Clear(D3DCOLOR_XRGB(0, 0, 0));
d3dWindow.BeginScene();
Vertices.FillProcessedBuffer(&d3dWindow, &Vertices, 4);  //By here
Vertices.Render(&d3dWindow, 2);
d3dWindow.EndScene();
d3dWindow.Present(); 

How is that possible???? I''ve made some alterations to the code, i.e. when creating the above vertices I expected to get a small square in the upper left corner of the screen, except it does zip. A bit much to ask but would someone mind taking a quick look at my Project files and see where I''m going wrong. Cos I''ve seen some other people code create vertices in a similar format like this.

(250.0f,100.0f,0.5f,1.0f,D3DCOLOR_XRGB(255,0,0) 

Now If I were to stick to seans original code then these co-ords don''t seem to show, i.e. sean used co-ords of (0,0) (0,1) (1.25,0) (1.25,1) , now I would of thought that would have made a very small square in the upper left of the screen, instead it makes quite a large square in the top right quadrant of the screen. Help!!!!!!!!!!!! I is very confused. Paul.