Ok, I''m working on a flexible vertex format system for my engine, and I am just dicking around with some templates (the project isn''t serious, so don''t get on my case about efficiency. a vertex with a single pos entry would be declared as such: VERTEX_BEGIN> my_vertex; here are the structure definitions:

template <class arg>
struct VERTEX_BEGIN : arg
{
	long FVF;
	VERTEX_BEGIN()
	{
		FVF = 0;
		super();
	}
};

template <class arg>
struct VERTEX_POS : arg
{
	D3DXVECTOR3 pos;
	VERTEX_POS()
	{
		FVF = FVF | D3DFVF_XYZ;
		super();
	}
};

struct VERTEX_END
{
	//NOTHIN

};

as you can see, the template arguements define parent classes. Now as long as I don''t define a vertex, these classes will compile. but if I try to define my_vertex as a VERTEX_BEGIN>, I get the following errors: d:\Source Code\Isis\Isis\Direct3DRenderer.cpp(13): error C2947: expecting ''>'' to terminate template-argument-list, found ''>>'' d:\Source Code\Isis\Isis\Direct3DRenderer.cpp(13): error C2146: syntax error : missing '','' before identifier ''my_vertex'' d:\Source Code\Isis\Isis\Direct3DRenderer.cpp(13): error C2065: ''my_vertex'' : undeclared identifier d:\Source Code\Isis\Isis\Direct3DRenderer.cpp(13): error C2143: syntax error : missing ''>'' before '';'' d:\Source Code\Isis\Isis\Direct3DRenderer.cpp(13): error C2976: ''VERTEX_BEGIN'' : too few template arguments thats about all i can give ya at the moment. Any help would be greatly appreciated. Thanky

Your post is a little hard to understand completely. Are you doing this?

VERTEX_BEGIN<VERTEX_POS<SomeClassName>> MyVertex; 

what are you using to declare your variable?

thanks, I knew it was something like that

I also had the order screwed up

template <class arg>struct VERTEX_BEGIN : arg{};template <class arg>struct VERTEX_POS : public arg{	D3DXVECTOR3 pos;	VERTEX_POS()	{		FVF = FVF | D3DFVF_XYZ;	}};struct VERTEX_END{	long FVF;	VERTEX_END()	{		FVF = 0;	}};

is what i should have.

now I need to get these working with direct3d

And also, I can''t have the FVF member IN the class, because it messed up how Direct3D likes its FVFs. How can I make it so FVF isn''t in the class, but there is a unique one for every vertex (it is being modified by all the ctors.

thanks again