#include <vector>
#include "Vector3.h"

using namespace std;

struct	BasicTri
{
	Vector3 P1, P2, P3;
	int	Texture;


	BasicTri(const BasicTri& t)
	{
		P1 = t.P1;
		P2 = t.P2;
		P3 = t.P3;
		Texture = t.Texture;
	}

	BasicTri& operator=(const BasicTri& t)
	{
		if( &t != this ){
			P1 = t.P1;
			P2 = t.P2;
			P3 = t.P3;
			Texture = t.Texture;
		}
		return *this;
	}
};

std::vector<BasicTri*>	mBasicTri;

class GLRenderer
{
public:

	void	AddBasicTriToRenderer(BasicTri* t)
	{

		// then add to the vector
		mBasicTri.push_back(t);
	}

	void	RenderBasicTriangles(void);

};

#include "Renderer.h"

--------------------Configuration: NeHeGL - Win32 Debug--------------------
Compiling...
Renderer.cpp
Linking...
Renderer.obj : error LNK2005: "class std::vector<struct BasicTri *,class std::allocator<struct BasicTri *> > mBasicTri" (?mBasicTri@@3V?$vector@PAUBasicTri@@V?$allocator@PAUBasicTri@@@std@@@std@@A) already defined in Example.obj
Debug/NeHeGL.exe : fatal error LNK1169: one or more multiply defined symbols found
Error executing link.exe.

NeHeGL.exe - 2 error(s), 0 warning(s)

Quote:Original post by Shamino
Really? Don't the vector functions in my AddBasicTriToRenderer() function need that? And if so, I just move that to the CPP file?


:: Hmm, guess not, edited it out, runs fine, exactly what is that used for?

namespace foo {    int foobar(char bar) { return bar; }}

#include <vector>#include "Vector3.h"struct     BasicTri {      Vector3 P1;      Vector3 P2;      Vector3 P3;      int     Texture;       BasicTri()     {          }       BasicTri(const BasicTri& t)      {           P1 = t.P1;           P2 = t.P2;           P3 = t.P3;           Texture = t.Texture;      }       BasicTri& operator=(const BasicTri& t)      {           if( &t != this ){                P1 = t.P1;                P2 = t.P2;                P3 = t.P3;                Texture = t.Texture;           }           return *this;      } };extern std::vector<BasicTri*> mBasicTri;class GLRenderer{public:	void	AddBasicTriToRenderer(BasicTri* t)	{		// then add to the vector		mBasicTri.push_back(t);	}	void	RenderBasicTriangles(void);};

#include <windows.h>#include <gl\gl.h>#include <gl\glu.h>#include <gl\glaux.h>#include "NeHeGL.h"	#include "Renderer.h"	std::vector<BasicTri*> mBasicTri;void GLRenderer::RenderBasicTriangles(){	if (!mBasicTri.size())	{		return;	}	std::vector<BasicTri*>::iterator	ptr;	for (ptr = mBasicTri.begin(); ptr != mBasicTri.end(); ptr++)	{		BasicTri * temp = *ptr;		glBegin(GL_TRIANGLES);		glVertex3f(temp->P1.x,temp->P1.y,temp->P1.z);		glVertex3f(temp->P2.x,temp->P2.y,temp->P2.z);		glVertex3f(temp->P3.x,temp->P3.y,temp->P3.z);		glEnd();	}	}

class Vector3{public: float x, y, z;  Vector3()  {  }  Vector3(float x, float y, float z);// And so on};

#include "Vector3.h"Vector3::Vector3(float X, float Y, float Z) { 	x = X; 	y = Y; 	z = Z; }