C / C++ / MFC

myString operator+(myString A,myString B)
{
   int nLength = strlen(A);
   nLength += strlen(B);

   char* pStr = new char[nLength+1];

   for(int nCnt = 0; nCnt++; nCnt < (strlen(A)-1))
      pStr[nCnt] = A[nCnt];

   for(nCnt = 0; nCnt++; nCnt < (strlen(B)-1))
      pStr[strlen(A)+nCnt] = B[nCnt];

   pStr[nLength] = 0; // Null terminate

   myString str(pStr);

   return (str);
}

void CMySlider::OnCustomDraw(NMHDR* pNMHDR, LRESULT* pResult) 
{
	LPNMCUSTOMDRAW pcd  = (LPNMCUSTOMDRAW)pNMHDR;
	
	if (CDDS_PREPAINT == pcd->dwDrawStage)
	{
		*pResult = CDRF_NOTIFYITEMDRAW;
		return;
	}
	
	*pResult = 0;


	if (TBCD_CHANNEL == pcd->dwItemSpec && 
		CDDS_ITEMPREPAINT == pcd->dwDrawStage)
	{
		CDC dc;
		dc.Attach(pcd->hdc);
		CRect rc;
		GetChannelRect(rc);
		dc.DrawEdge(&rc, BDR_SUNKENOUTER, BF_RECT);
		rc.DeflateRect(2, 2);
		dc.FillSolidRect(&rc, RGB(0, 255, 0));
		dc.Detach();
		
		*pResult = CDRF_SKIPDEFAULT;
	}
}

::MessageBeep(0);

cout<<"beep sound \a";