Re: [Mingw-users] Re: DirectX DirectDrawCreate Yet Again

[Martin K. <ma...@ja...>]

> Well, this is exactlly what I mean, if you link with the DX SDK Libraries, 
> you still get DirectDrawCreate and/or DirectDrawCreateEx as unresolved 
> externals, happens if you link directlly to the DLL or the LIB file too, 
> the only explanation I figured out for this is that those functions are 
> wrapers for CoCreateInstance and the dark COM side of DX.

I haven't tried, so I wouldn't know. Are you using the DX8 SDK? I
wonder whether it actually includes the libs for previous versions?

> absolutelly no other function comes out unresolved (I am deducting 

There are only a couple of other functions (Enumerate and
CreateClipper) - everything else is an interface method.

> I have read the list, I have searched the net, and I see this "I Use 
> LoadLibrary and GetProcAddress" all over the place, but I havent seen an 
> example of using those, which is what I am asking for, I did this:

Well that looks identical to what I do. Do you get this error message
in this code segment, or when you create a surface or what?

> if( FAILED( hr = MDirectDrawCreateEx( NULL, 
> (VOID**)&m_pDD,IID_IDirectDraw7, NULL ) ) )
>          return ERROR;

I'm assuming you're in C++ here. For C, you need &IID_IDirectDraw7.

> all the other functions I linked against ddraw.lib

If you're using LoadLibrary you shouldn't need to link against the lib.
I don't know whether this might be causing problems.

> many people have asked me how to use
> DX8a with Mingw, thats why I need to know (I use DX7 myself)

This is what I do for D3D8:

typedef struct IDirect3D8 * WINAPI (*D3DCREATETYPE)(UINT);
/* or you could: typedef FARPROC D3DCREATETYPE; */

D3DCREATETYPE d3dcreate= NULL;
HINSTANCE D3DLibrary= NULL;
LPDIRECT3D8 D3D= NULL;

/* load the d3d8 library */
  D3DLibrary= LoadLibrary("D3D8.DLL");
  if (!D3DLibrary)
  {
    DoFatal("DirectX 8 not installed");
  }
  else
  {
/* get the d3d8 create function */
    d3dcreate= (D3DCREATETYPE) GetProcAddress(D3DLibrary, "Direct3DCreate8");
    if (!d3dcreate)
    {
      DoFatal("Direct3DCreate8 not found");
    }
    else
    {
/* create a d3d8 interface */
      D3D= (*d3dcreate)(D3D_SDK_VERSION);
      if (!D3D)
      {
        DoFatal("couldn't create D3D interface");
      }