[Dev-C++] Windows, COM, CoCreateInstance and OleInitialize

[Mark A. <am...@ho...>]

Hi there!

I was trying all possibilities of DEV-C++ and I was pretty excited about =
it.
But I've encountered a problem.
In the Windows-operating-systems it is pretty important to use =
components (COM).

I've made a "windows application" project and added the following code:

----------------------------------------

const CLSID CLSID_Printing =3D =
{0x76A73923,0xD88C,0x11D6,{0xB5,0x51,0xEB,0xCE,0x0B,0x59,0xDA,0x72}};
const IID IID_IUnknown =3D     =
{0x00000000,0x0000,0x0000,{0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46}};
const IID IID_IClassFactory =
=3D{0x00000001,0x0000,0x0000,{0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x46}};

const CLSID CLSID_MySimpleObj =
=3D{0x14C0CBCC,0x8E68,0x4BB0,{0xB4,0x49,0x2D,0x9D,0xFB,0x80,0x9A,0x16}};
const IID IID_IMySimpleObj =
=3D{0x14C0CBCD,0x8E68,0x4BB0,{0xB4,0x49,0x2D,0x9D,0xFB,0x80,0x9A,0x16}};

interface IMySimpleObj : public IUnknown {
  virtual HRESULT msg()=3D0;
};

int WINAPI WinMain (HINSTANCE hThisInstance,
                    HINSTANCE hPrevInstance,
                    LPSTR lpszArgument,
                    int nFunsterStil) {

    MessageBox(0,"Test Start..","Project2",0);
    //OleInitialize(0);                         //<-Creates a crash!
    IUnknown * schaap;
    schaap =3D NULL;
    HRESULT hr;
    hr =3D =
CoCreateInstance(CLSID_MySimpleObj,0,CLSCTX_INPROC,IID_IUnknown,(void**)&=
schaap);
    if (schaap!=3DNULL) {
      MessageBox(0,"Test CoCreateInstance Worked!","Project2",0);
      schaap->Release();
      schaap =3D NULL;
    }
    //OleUninitialize();
    MessageBox(0,"Test Done..","Project2",0);

    //HERE THE REST OF THE WinMain-Code!
}

----------------------------------------
Secondly: in the menu 'Project' -> 'Project Options' --tab-> Parameters =
--button->  Add Library or Object
  I've added the OLE32.LIB from Microsoft Visual C++ 5.0.

The problem is that CoCreateInstance never succeeds in creating an =
object!
So I also tried to do a "OleInitialize(0)", but this one always results =
in crashing!

I hope this problem can be solved to meet the important requirement of =
using COM in DEV-C++ !

greetings,

Mark Ament