C / C++ / MFC

CPaintDC dc(this);
CRect cRect; GetClientRect( cRect );
int nWidth = cRect.Width();
int nHeight = cRect.Height();
CBitmap cBitmap;

cBitmap.LoadBitmap( IDB_BITMAP1 );

DWORD* pBuffer = new DWORD[ nWidth * nHeight ];


DWORD dwSize = cBitmap.GetBitmapBits( nWidth * nHeight,
                                    pBuffer );
for ( int y = 0 ; y < nHeight ; y++ )
{
    for ( int x = 0; x < nWidth ; x++ )
    {
        if ( *(pBuffer+x+nWidth*y) < RGB( 64, 128 , 256 ) )
        {
            *(pBuffer+x+nWidth*y) = 0; //black
        }
        else
        {
            *(pBuffer+x+nWidth*y) = 0x00FFFFFF; //white
        }
    }
}

cBitmap.SetBitmapBits( nWidth * nHeight ,
                       pBuffer );

CDC cMemDC;
cMemDC.CreateCompatibleDC( &dc );

cMemDC.SelectObject( &cBitmap );

dc.BitBlt( 0,
           0,
           nWidth,
           nHeight,
           &cMemDC,
           0,
           0,
           SRCCOPY );


delete [] pBuffer;

for ( int x = 0 ; x < dwSize ; x++ )
{
     if ( pBuffer[x] < RGB( 64, 128 , 256 ) )
     {
         pBuffer[x] = 0; //black
     }
     else
     {
         pBuffer[x] = 0x00FFFFFF; //white
     }
 }

byte  grey = (byte)(
	(R * 0.299) +
	(G * 0.587) +
	(B * 0.114)
);

RESOURCE_NAME TEXTFILE "res\\MyTextFile.txt"

CString target;
LoadResource(&target, "RESOURCE_NAME");

bool LoadResource(CString *script, const char* name)
{
	// load the resource
	bool bOK = false;
	HRSRC hFRes = ::FindResource(AfxGetResourceHandle(), name, "TEXTFILE");
	if (hFRes != NULL)
	{
		HANDLE hRes = ::LoadResource(AfxGetResourceHandle(), hFRes);
		if (hRes != INVALID_HANDLE_VALUE)
		{
			// we loaded it, now get the text from it
			char *lpRes = (char*)::LockResource(hRes);
			DWORD size = SizeofResource(AfxGetResourceHandle(), hFRes);
			// we need to use the size of the resource like this because the lpRes pointer
			// can have many text files as 1 string, we need to extract
			// the text for our file only, by knowing how many bytes to copy into
			// to the target string
			CString format;
			format.Format("%%.%1ds", size);
			script->Format(format, lpRes);
			::UnlockResource(hRes);
			::FreeResource(hRes);
			bOK = true;
		}
	}
	return bOK;
}