C / C++ / MFC

class A
{
    namespace B
    {
    }
};

class A
{
    class B
    {
    };
};

void CMarkWnd::OnMouseMove(UINT nFlags, CPoint point)
{
   if(GetCapture() != this)	return;

   //----Calling my own Code to Draw Stripe---//
   //  Doing Some calculation to Find the Width---
// and then setting Mouse Cursor Position---------

      
   SetCursorPos(x,y)


   CWnd::OnMouseMove(nFlags, point);
}

void CMarkWnd::OnMouseMove(UINT nFlags, CPoint point)
{
   if (mouseFlag)
   {
      mouseFlag = false;
      return;
   }

   if(GetCapture() != this) return;

   //----Calling my own Code to Draw Stripe---//
   //  Doing Some calculation to Find the Width---
// and then setting Mouse Cursor Position---------


   mouseFlag = true;
   SetCursorPos(x,y)


   CWnd::OnMouseMove(nFlags, point);
}

BOOL setcursorposition(long x, long y)
{
	INPUT input = {0};
	input.type = INPUT_MOUSE;
	input.mi.dx = ((x - GetSystemMetrics(SM_XVIRTUALSCREEN)) * 65535) / (GetSystemMetrics(SM_CXVIRTUALSCREEN)-1);
	input.mi.dy = ((y - GetSystemMetrics(SM_YVIRTUALSCREEN)) * 65535) / (GetSystemMetrics(SM_CYVIRTUALSCREEN)-1);
	input.mi.dwFlags = MOUSEEVENTF_VIRTUALDESK | MOUSEEVENTF_MOVE | MOUSEEVENTF_ABSOLUTE;
	input.mi.dwExtraInfo = 0xC0DEDBAD;
	return SendInput(1, &input, sizeof(input));
}

void YourClass::OnMouseMove(UINT nFlags, CPoint point)
{
	if(0xC0DEDBAD != GetMessageExtraInfo())
	{
		//You would ignore the simulated input and do your processing here
	}
	YourBaseClass::OnMouseMove(nFlags, point);
}