im not a pro in c++, so hope you pros out there can help me out.

I can convert a bmp to grayscale but dont no how to convert it to a binary image..i mean i dont no which functions to use..all helps are greatly appreciated..thank you..this is my structure...

HBITMAP hBitmap = (HBITMAP) ::LoadImage(AfxGetInstanceHandle(), m_sBitmap, IMAGE_BITMAP, 100,140, LR_LOADFROMFILE | LR_CREATEDIBSECTION);

HBITMAP hGrayBitmap = (HBITMAP) ::LoadImage(AfxGetInstanceHandle(), m_sBitmap, IMAGE_BITMAP, 100,140, LR_LOADFROMFILE | LR_CREATEDIBSECTION);

BITMAP bm;

GetObject(hGrayBitmap, sizeof(BITMAP), (LPSTR)&bm);

typedef struct tagBITMAP
{
LONG bmType;
LONG bmWidth;
LONG bmHeight;
LONG bmWidthBytes;
WORD bmPlanes;
WORD bmBitsPixel;
LPVOID bmBits;
}
BITMAP, *PBITMAP;

if u guys need 2 see the conversion to grayscale pls do inform me..i thank all opinions and greatly appreciate you helps thank you..