k, well, i downloaded "hge" a 2d graphics engine in c++. it comes with a small tut witch consists of the source code. for tut 1 the code is. Code: /* ** Haaf's Game Engine 1.8 ** Copyright (C) 2003-2007, Relish Games ** hge.relishgames.com ** ** hge_tut01 - Minimal HGE application */ #include "..\..\include\hge.h" HGE *hge = 0; // This function will be called by HGE once per frame. // Put your game loop code here. In this example we // just check whether ESC key has been pressed. bool FrameFunc() { // By returning "true" we tell HGE // to stop running the application. if (hge->Input_GetKeyState(HGEK_ESCAPE)) return true; // Continue execution return false; } int WINAPI WinMain(HINSTANCE, HINSTANCE, LPSTR, int) { // Here we use global pointer to HGE interface. // Instead you may use hgeCreate() every // time you need access to HGE. Just be sure to // have a corresponding hge->Release() // for each call to hgeCreate() hge = hgeCreate(HGE_VERSION); // Set our frame function hge->System_SetState(HGE_FRAMEFUNC, FrameFunc); // Set the window title hge->System_SetState(HGE_TITLE, "HGE Tutorial 01 - Minimal HGE application"); // Run in windowed mode // Default window size is 800x600 hge->System_SetState(HGE_WINDOWED, true); // Don't use BASS for sound hge->System_SetState(HGE_USESOUND, false); // Tries to initiate HGE with the states set. // If something goes wrong, "false" is returned // and more specific description of what have // happened can be read with System_GetErrorMessage(). if(hge->System_Initiate()) { // Starts running FrameFunc(). // Note that the execution "stops" here // until "true" is returned from FrameFunc(). hge->System_Start(); } else { // If HGE initialization failed show error message MessageBox(NULL, hge->System_GetErrorMessage(), "Error", MB_OK | MB_ICONERROR | MB_APPLMODAL); } // Now ESC has been pressed or the user // has closed the window by other means. // Restore video mode and free // all allocated resources hge->System_Shutdown(); // Release the HGE interface. // If there are no more references, // the HGE object will be deleted. hge->Release(); return 0; } when i compile it i get the error " [Linker error] undefined reference to `hgeCreate@4' " i have looked of what this means and all i have found on forums are people telling other people that it is a linker error. and well. duh. but no one will tell me how to fix it.