My First Game Engine PROBLEMS!

I get this error: --------------------Configuration: VinEngine - Win32 Debug-------------------- Compiling... TestEngine.cpp c:\myprojects\vinengine\testengine.cpp(48) : warning C4101: ''buffer'' : unreferenced local variable c:\myprojects\vinengine\testengine.cpp(146) : warning C4101: ''hdc'' : unreferenced local variable Skipping... (no relevant changes detected) VinEngine.cpp Linking... VinEngine.obj : error LNK2005: "void __cdecl InitializeDirectDraw(int,int,int)" (?InitializeDirectDraw@@YAXHHH@Z) already defined in TestEngine.obj VinEngine.obj : error LNK2005: "void __cdecl CreateDoubleBuffer(void)" (?CreateDoubleBuffer@@YAXXZ) already defined in TestEngine.obj VinEngine.obj : error LNK2005: "struct _DDSURFACEDESC2 ddsd" (?ddsd@@3U_DDSURFACEDESC2@@A) already defined in TestEngine.obj VinEngine.obj : error LNK2005: "struct IDirectDrawSurface4 * primsurf" (?primsurf@@3PAUIDirectDrawSurface4@@A) already defined in TestEngine.obj VinEngine.obj : error LNK2005: "struct HWND__ * hwnd" (?hwnd@@3PAUHWND__@@A) already defined in TestEngine.obj VinEngine.obj : error LNK2005: "struct IDirectDrawSurface4 * backsurf" (?backsurf@@3PAUIDirectDrawSurface4@@A) already defined in TestEngine.obj VinEngine.obj : error LNK2005: "struct IDirectDraw4 * ddraw4obj" (?ddraw4obj@@3PAUIDirectDraw4@@A) already defined in TestEngine.obj Debug/VinEngine.exe : fatal error LNK1169: one or more multiply defined symbols found Error executing link.exe. VinEngine.exe - 8 error(s), 2 warning(s) ****************************************************** HEADER FILE OF ENGINE ****************************************************** //VINENGINE.H #ifndef VinEngine #define VinEngine LPDIRECTDRAW4 ddraw4obj; LPDIRECTDRAWSURFACE4 primsurf, backsurf; DDSURFACEDESC2 ddsd; HWND hwnd; void InitializeDirectDraw(int width, int height, int bpp); void CreateDoubleBuffer(); #endif ****************************************************** ****************************************************** CPP FILE OF ENGINE ****************************************************** ************* #define WIN32_LEAN_AND_MEAN #include #include"VinEngine.h" #include void InitializeDirectDraw(int width, int height, int bpp) { LPDIRECTDRAW ddraw1obj; if(FAILED(DirectDrawCreate(NULL, &ddraw1obj, NULL))) return; if(FAILED(ddraw4obj->QueryInterface(IID_IDirectDraw4, (LPVOID *)&ddraw4obj))) return; ddraw1obj->Release(); ddraw1obj = NULL; if(FAILED(ddraw4obj->SetCooperativeLevel(hwnd, DDSCL_FULLSCREEN // DDSCL_ALLOWMODEX // DDSCL_EXCLUSIVE // DDSCL_ALLOWREBOOT))) return; if(FAILED(ddraw4obj->SetDisplayMode(width, height, bpp, NULL, NULL))) return; } void CreateDoubleBuffer() { DDSURFACEDESC2 surfdesc; memset(&surfdesc,0,sizeof(surfdesc)); surfdesc.dwSize=sizeof(surfdesc); surfdesc.dwFlags= DDSD_CAPS // DDSD_BACKBUFFERCOUNT; surfdesc.dwBackBufferCount = 1; surfdesc.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE // DDSCAPS_COMPLEX // DDSCAPS_FLIP; if(FAILED(ddraw4obj->CreateSurface(&surfdesc,&primsurf,NULL))) return; surfdesc.ddsCaps.dwCaps = DDSCAPS_BACKBUFFER; if(FAILED(primsurf->GetAttachedSurface(&surfdesc.ddsCaps,&backsurf))) return; } ***************************************** ***************************************** MAIN CPP FILE TO TEST ENGINE ***************************************** ****************************************** // MAIN CPP TO TEST ENGINE! // INCLUDES /////////////////////////////////////////////// #define WIN32_LEAN_AND_MEAN // just say no to MFC #include // include important windows stuff #include #include #include // include important C/C++ stuff #include #include #include #include #include #include #include #include #include #include #include #include "VinEngine.h" #include "VinEngine.cpp" // DEFINES //////////////////////////////////////////////// // defines for windows #define WINDOW_CLASS_NAME "WINCLASS1" // MACROS ///////////////////////////////////////////////// #define KEYDOWN(vk_code) ((GetAsyncKeyState(vk_code) & 0x8000) ? 1 : 0) #define KEYUP(vk_code) ((GetAsyncKeyState(vk_code) & 0x8000) ? 0 : 1) // GLOBALS //////////////////////////////////////////////// HWND main_window_handle = NULL; // globally track main window HINSTANCE hinstance_app = NULL; // globally track hinstance char buffer[80]; // general printing buffer // FUNCTIONS ////////////////////////////////////////////// LRESULT CALLBACK WindowProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam) { // this is the main message handler of the system PAINTSTRUCT ps; // used in WM_PAINT HDC hdc; // handle to a device context char buffer[80]; // used to print strings // what is the message switch(msg) { case WM_CREATE: { // do initialization stuff here // return success return(0); } break; case WM_PAINT: { // simply validate the window hdc = BeginPaint(hwnd,&ps); // end painting EndPaint(hwnd,&ps); // return success return(0); } break; case WM_DESTROY: { // kill the application, this sends a WM_QUIT message PostQuitMessage(0); // return success return(0); } break; default:break; } // end switch // process any messages that we didn''t take care of return (DefWindowProc(hwnd, msg, wparam, lparam)); } // end WinProc /////////////////////////////////////////////////////////// int Game_Main(void *parms = NULL, int num_parms = 0) { // this is the main loop of the game, do all your processing // here // for now test if user is hitting ESC and send WM_CLOSE if (KEYDOWN(VK_ESCAPE)) SendMessage(main_window_handle,WM_CLOSE,0,0); // return success or failure or your own return code here return(1); } // end Game_Main //////////////////////////////////////////////////////////// int Game_Init(void *parms = NULL, int num_parms = 0) { // this is called once after the initial window is created and // before the main event loop is entered, do all your initialization // here // return success or failure or your own return code here return(1); } // end Game_Init ///////////////////////////////////////////////////////////// int Game_Shutdown(void *parms = NULL, int num_parms = 0) { // this is called after the game is exited and the main event // loop while is exited, do all you cleanup and shutdown here // return success or failure or your own return code here return(1); } // end Game_Shutdown // WINMAIN //////////////////////////////////////////////// int WINAPI WinMain( HINSTANCE hinstance, HINSTANCE hprevinstance, LPSTR lpcmdline, int ncmdshow) { WNDCLASSEX winclass; // this will hold the class we create HWND hwnd; // generic window handle MSG msg; // generic message HDC hdc; // graphics device context // first fill in the window class stucture winclass.cbSize = sizeof(WNDCLASSEX); winclass.style = CS_DBLCLKS / CS_OWNDC / CS_HREDRAW / CS_VREDRAW; winclass.lpfnWndProc = WindowProc; winclass.cbClsExtra = 0; winclass.cbWndExtra = 0; winclass.hInstance = hinstance; winclass.hIcon = LoadIcon(NULL, IDI_APPLICATION); winclass.hCursor = LoadCursor(NULL, IDC_ARROW); winclass.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH); winclass.lpszMenuName = NULL; winclass.lpszClassName = WINDOW_CLASS_NAME; winclass.hIconSm = LoadIcon(NULL, IDI_APPLICATION); // save hinstance in global hinstance_app = hinstance; // register the window class if (!RegisterClassEx(&winclass)) return(0); // create the window if (!(hwnd = CreateWindowEx(NULL, // extended style WINDOW_CLASS_NAME, // class "T3D Game Console Version 1.0", // title WS_OVERLAPPEDWINDOW / WS_VISIBLE, 0,0, // initial x,y 400,300, // initial width, height NULL, // handle to parent NULL, // handle to menu hinstance,// instance of this application NULL))) // extra creation parms return(0); // save main window handle main_window_handle = hwnd; // initialize game here Game_Init(); // enter main event loop while(TRUE) { // test if there is a message in queue, if so get it if (PeekMessage(&msg,NULL,0,0,PM_REMOVE)) { // test if this is a quit if (msg.message == WM_QUIT) break; // translate any accelerator keys TranslateMessage(&msg); // send the message to the window proc DispatchMessage(&msg); } // end if // main game processing goes here Game_Main(); } // end while // closedown game here Game_Shutdown(); // return to Windows like this return(msg.wParam); } // end WinMain /////////////////////////////////////////////////////////// I don''t know where I have redeclared those things! plz help thx reply to this post or email me @ arw3z@hotmail.com