C / C++ / MFC

class e
{
	...
public:
	void myMainLoopFunc(void){...}
};

int size = 0, width = 0, height = 0, planes = 0, bpp = 0, r = 0, g = 0, b = 0;
unsigned char* pBits = NULL;
CComVariant data;
hr = pIShellBmp->GetData( &width, &height, &planes, &bpp, &data ); //my interface which returns serialized bitmap
hr = pIShellBmp->GetColors( &r, &g, &b );
            if( SUCCEEDED(hr) )
            {

                CComSafeArray<BYTE> bits( data.parray );
                pBits = new unsigned char[ bits.GetCount() ]; // this is array of bits in bitmap - it's content of other BITMAP::biBits which I store in IShellBmp interface in COM server (local service)
                for( int i = 0; i < bits.GetCount(); ++i )
                {
                    pBits[i] = bits.GetAt( i );
                }

                BITMAP bmp;

                bmp.bmType = 0;
                bmp.bmBitsPixel = bpp;
                bmp.bmHeight = height;
                bmp.bmPlanes = planes;
                bmp.bmWidth = width;
                bmp.bmWidthBytes = width * bpp / 8 + (width * bpp / 8)%2;
                bmp.bmBits = pBits;


                HBITMAP hBitmap = CreateBitmapIndirect( &bmp ); // THIS IS OK - bitmap created


                BITMAPINFO bmi;
                bmi.bmiHeader.biSize = sizeof(BITMAPINFO);
                bmi.bmiHeader.biBitCount = bpp;
                bmi.bmiHeader.biClrImportant = 0;
                bmi.bmiHeader.biClrUsed = 0;
                bmi.bmiHeader.biCompression = BI_RGB;
                bmi.bmiHeader.biHeight = height;
                bmi.bmiHeader.biPlanes = planes;
                bmi.bmiHeader.biSizeImage = 0;
                bmi.bmiHeader.biWidth = width;


                if( hBitmap == NULL )
                {
                    DWORD err = GetLastError();
                    hr = E_FAIL;
                }//if
                else
                {
                    DWORD err = SetDIBits( CreateCompatibleDC(NULL), hBitmap, 0, bmp.bmHeight, pBits, &bmi, DIB_RGB_COLORS );  // This line returns 0 - ???
                    err = GetLastError(); // error code is 0
                    GetObject( hBitmap, sizeof(BITMAP), &bmp ); // bmp.bibits contains NULL - why??
                    WriteBMPFile( hBitmap, _T("c:\\received.bmp"), CreateCompatibleDC( NULL ) );
                }//else
            }//if