simple loop problem or pixel one

[pinnachio]

here you go sir......
my first step is

checking for if the user has click on a RGB(0,0,128) pixel

void CPflowView::OnLButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	long tempx=point.x ;
	long tempy=point.y ;
	CPflowDoc* pDoc = GetDocument();
	pDC=GetDC();
	OnPrepareDC(pDC);
	pDC->DPtoLP(&point);
	x2=point.x;
	y2=point.y ;
	HDC hDC= pDC->GetSafeHdc();
	
	if(bCheckBusOpt==FALSE)
	{
		if(GetPixel(hDC,point.x,point.y)==RGB(0,0,128))
		{
			busindex=pDoc->InBus (x2 ,y2 );
			/*char temp[10];
			ltoa(busindex,temp,10);
			MessageBox(temp);*/
			if(busindex>=0)
			{SetCapture();m_dragging=TRUE;}
		}
	}
	
	if(bCheckBusOpt==TRUE)
		DrawBus();
		
	CScrollView::OnLButtonDown(nFlags, point);
}

the InBus function is as:

int CPflowDoc::InBus(long x,long y)
	{
	int index=GetNumBus();
	CBus1* bus;
        while(index--)
	{	
		CBus1* bus;
		bus=GetBus(index);
		if( x>= bus->m_x1 && x<=abs(bus->m_x2 -bus->m_x1))
		{
			if( y>= bus->m_y1 && y<=abs(bus->m_y2 -bus->m_y1))
			{
			return index;
			}
		}
	}
return -1;
}

and
here the problem is it never goes into the if statement......
can u please help me now??