[Borland C++] DirectInput: unresolved externals

blubbdidubb

Hallo!
Ich habe versucht, dieses Tutorial umzusetzen. Das Compilieren geht problemlos, nur beim Starten kommen dann die beiden Fehler:

[Linker Fehler] Unresolved external '_IID_IDirectInput8A' referenced from ...
[Linker Fehler] Unresolved external '_c_dfDIKeyboard' referenced from ...

Header und Libs sind wie im Tutorial eingebunden:

// include the basic windows header files and the DirectX header files
#include <windows.h>
#include <windowsx.h>
#include <dinput.h>

// include the DirectX Library files
#pragma comment (lib, "dinput.lib")
#pragma comment (lib, "dinput8.lib")
#pragma comment (lib, "dxguid.lib")

//...

// this is the function that initializes DirectInput
void initDInput(HINSTANCE hInstance, HWND hWnd)
{
    // create the DirectInput interface
    DirectInput8Create(hInstance,    // the handle to the application
                       DIRECTINPUT_VERSION,    // the compatible version
                       IID_IDirectInput8,    // the DirectInput interface version
                       (void**)&din,    // the pointer to the interface
                       NULL);    // COM stuff, so we'll set it to NULL

    // create the keyboard device
    din->CreateDevice(GUID_SysKeyboard,    // the default keyboard ID being used
                      &dinkeyboard,    // the pointer to the device interface
                      NULL);    // COM stuff, so we'll set it to NULL

    dinkeyboard->SetDataFormat(&c_dfDIKeyboard); // set the data format to keyboard format

    // set the control you will have over the keyboard
    dinkeyboard->SetCooperativeLevel(hWnd,
                                     DISCL_NONEXCLUSIVE | DISCL_BACKGROUND);
}

und in den Projektoptionen sind die Pfade auch gesetzt:

Include-Pfad:
*DX SDK*\Include\
$(BCB)\include
$(BCB)\include\vcl

Bibliothekspfad:
$(BCB)\Lib\DirectX  //mit Coff2Omf umgewandelte DX Libs
$(BCB)\Projects\Lib
$(BCB)\lib\obj
$(BCB)\lib

Warum erkennt der die beiden Ausdrücke nicht?