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Hello friends

MFC application in which I m creating two Ruler bar which contains different color are object of same class rulerWnd. Now, am handling Mouse procedure on rulerWnd[lButtondown,up,mouseMove] are working Fine If i used to drag and drop some color to same ruler bar.

But If i have to drag some color from one ruler bar to another then it is dropping on same ruler. when i drop on other ruler from first then I checked on LbuttonUp that Point values are coming in negative and its dropping on same ruler even if my mouse LButton ups on another.

How can i handle two Windows mouse procedure at same time.
Any Ideas?
here is sample code that I am trying.

C++

OnLButtonDown(UINT nFlags, CPoint point)
{
case SELECT_COPY:
{
  if(m_dwStyle == ruler1|| m_dwStyle == ruler2)
	{
	  GetWindowRect(&rect);
	  ClipCursor(NULL);
	  SetCapture();
	  if(m_szSelectIndexRange.cx>-1 && m_szSelectIndexRange.cy>-1)//When dragging,checking if mouse clicked on selected region
	  {
		int nSelIndex;
	        if(m_dwStyle == ruler1)
		{
			nSelIndex = point.x + m_lScrollPos;
			nSelIndex /= fWarpUnit;
		}
		else
		{
			nSelIndex = m_nSize-(rect.Height()-point.y)-m_lScrollPos;
			nSelIndex /= fWeftUnit;
			}
		if(nSelIndex >= m_szSelectIndexRange.cx && nSelIndex <=     m_szSelectIndexRange.cy)
		{
			m_bSelectDrag = TRUE;
			::SetCursor(AfxGetApp()->LoadCursor(IDC_DRAG_CURSOR));
		}
				}
			}
		}; break;
}



OnMouseMove(UINT nFlags, CPoint point)

case SELECT_COPY:
{
   if(m_bSelectDrag)
   {
	CRect rectWnd, invalidRect;
	GetClientRect(&rectWnd);
	if(m_dwStyle == ruler2)
	{
 	m_lPaintEndPos = point.y;//m_nSize-(rectWnd.Height()-point.y)-m_lScrollPos;
					invalidRect = CRect(0, point.y-50-  (m_szSelectIndexRange.cy-m_szSelectIndexRange.cx)*m_fStep*pDoc->GetZoomValue(), 22, \
						point.y +50);
	}
	else
	{
		m_lPaintEndPos = point.x + m_lScrollPos;
		invalidRect = CRect(m_lPaintEndPos-50, 0, \
		m_lPaintEndPos+50+(m_szSelectIndexRange.cy-m_szSelectIndexRange.cx)*m_fStep*pDoc->GetZoomValue(),	22);
	}
	InvalidateRect(&invalidRect, FALSE);
}
  else	SelectStripe(point);
}; break;

OnLButtonUP(UINT nFlags, CPoint point)
case SELECT_COPY:
 ClipCursor(NULL);
 if(m_bSelectDrag)
 {
	CopyStripe(point);
	m_bSelectDrag = FALSE;
 }
 else	SelectStripe(point);
break;

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