[SOLVED]Template Linker error - seperate files.

[Mythios]

I'm getting this error

1>main.obj : error LNK2019: unresolved external symbol "void __cdecl BlitArrayToConsole<struct _CHAR_INFO>(struct _CHAR_INFO (&)[45][80])" (??$BlitArrayToConsole@U_CHAR_INFO@@@@YAXAAY1CN@FA@U_CHAR_INFO@@@Z) referenced in function _main

With the way I've designed a section in my code. I'm not to sure on how to let other files know about the template.

Heres the sections that are giving me this linker error.

header.h

#ifndef HEADER_H
#define HEADER_H
#include <windows.h>

#define WINDOW_HEIGHT_SIZE 45
#define WINDOW_WIDTH_SIZE  80

template <class TYPE>
void BlitArrayToConsole( TYPE (&OffScreenBuffer)[WINDOW_HEIGHT_SIZE][WINDOW_WIDTH_SIZE] );

#endif//HEADER_H 

Sorry if any spellings wrong - this is a small snippet from my code I edited some of it for the posts.

Cheers,
Myth

header.cpp

#include "header.h"

template <class TYPE>
void BlitArrayToConsole( TYPE (&OffScreenBuffer)[WINDOW_HEIGHT_SIZE][WINDOW_WIDTH_SIZE] )
{
	COORD offscreenBufferBuff;
	offscreenBufferBuff.X = WINDOW_WIDTH_SIZE;
	offscreenBufferBuff.Y = WINDOW_HEIGHT_SIZE;

	COORD dest;
	dest.X = dest.Y = 0;

	SMALL_RECT  rt;
	rt.Top = 0;
	rt.Bottom = WINDOW_HEIGHT_SIZE;
	rt.Left = 0;
	rt.Right = WINDOW_WIDTH_SIZE;

	WriteConsoleOutput(GetStdHandle(STD_OUTPUT_HANDLE), &OffScreenBuffer[0][0], offscreenBufferBuff, dest, &rt);
}

main.cpp

#include "header.h"

void main()
{
	//Temp Main

	CHAR_INFO offscreenBuffer[WINDOW_HEIGHT_SIZE][WINDOW_WIDTH_SIZE];
	BlitArrayToConsole <CHAR_INFO> ( offscreenBuffer );
}

[jsmith]

You have to move the implementation of BlitArrayToConsole out of header.cpp and put it into header.h

In general template functions and classes should be implemented within the header.

[Mythios]

Awesome I'll give that a try - I haven't used templates to much so they are new to me.

Thanks a heap jsmith ;)