Question about rendering Text?

I have a question about calculate the height of Text?

First I like to thanks oleg for his great help.

 CRect rcClient; this->GetClientRect( &rcClient );
 CRect rcGradient(rcClient); rcGradient.bottom = rcGradient.top + this->m_cbGradientWidth;
 CRect rcSolid(rcClient); rcSolid.MoveToY(rcGradient.bottom); rcSolid.bottom-=rcGradient.bottom;

 XTPDrawHelpers()->GradientFill( pdc, rcGradient, this->m_clrGradientTop, this->m_clrGradientBottom, FALSE);

 pdc->FillSolidRect( rcSolid, this->m_clrBack );
 pdc->SetBkMode( TRANSPARENT );
 pdc->SetTextColor( RGB(255,0,0) );
 pdc->SelectObject( this->m_fntTitle );

 UINT nFormat = DT_BOTTOM|DT_SINGLELINE|DT_END_ELLIPSIS;//|DT_RIGHT;//*|DT_RTLREADING*/|DT_NOCLIP;//DT_INTERNAL
 this->m_rcTitle.SetRect(0,0,0,0);
 pdc->DrawText( this->m_strTitle, this->m_rcTitle, DT_CALCRECT );
 //Mybe I will use margin so I used
 this->m_rcTitle.MoveToXY( MarginX, MarginY ); <<=== It's this right. I have remove it for testing but it's the same
 pdc->DrawText( this->m_strTitle, this->m_rcTitle, nFormat );
}

Hi, It's the same; I have always extra large height then the text it self, look at this screenshoot:

uploads/20070702_165857_Fonts.rar

IMPLEMENT_DYNAMIC(CCustomCaptionBar, CCustomCaptionBarBase)

BEGIN_MESSAGE_MAP(CCustomCaptionBar, CCustomCaptionBarBase)
 ON_WM_SIZE()
END_MESSAGE_MAP()

CCustomCaptionBar::CCustomCaptionBar(CSize btnSize)
{ 
 //Some Initialization
 //...
 //..
 //.

 this->m_cbGradientWidth  = 30;
 this->m_clrGradientTop  = RGB(79, 131, 209);
 this->m_clrGradientBottom = RGB(255, 255, 255);
 this->m_clrBack   = RGB(255, 255, 255);

 this->m_nXMargeTitle = 10;
 this->m_nYMargeTitle = 10;

 m_strTitle = _T("قسم السنة الأولى أ");

 //this->m_fntTitle.CreatePointFont( 180, _T("WinSoft Serif Pro") );
 LOGFONT lf;
 ::ZeroMemory(&lf, sizeof(LOGFONT));

 lf.lfHeight = -MulDiv( 18, theApp.m_pSAMResource->m_LogPixelsY, 72 );
 lf.lfCharSet = ARABIC_CHARSET;
 lf.lfQuality = /*ANTIALIASED_QUALITY; //*/CLEARTYPE_QUALITY;
     ::STRCPY_S(lf.lfFaceName, LF_FACESIZE, _T("WinSoft Serif Pro") ); 
 
 this->m_fntTitle.CreateFontIndirect( &lf );

}

CCustomCaptionBar::~CCustomCaptionBar()
{
 this->m_fntTitle.DeleteObject();
}

VOID CCustomCaptionBar::DrawItem(LPDRAWITEMSTRUCT lpDrawIS)
{
 CDC  *pdc = CDC::FromHandle(lpDrawIS->hDC);

 CRect rcClient; this->GetClientRect( &rcClient );
 CRect rcGradient(rcClient); rcGradient.bottom = rcGradient.top + this->m_cbGradientWidth;
 CRect rcSolid(rcClient);  rcSolid.MoveToY(rcGradient.bottom); rcSolid.bottom-=rcGradient.bottom;

 XTPDrawHelpers()->GradientFill( pdc, rcGradient, this->m_clrGradientTop, this->m_clrGradientBottom, FALSE); 
 pdc->FillSolidRect( rcSolid, this->m_clrBack );

 pdc->SetBkMode( TRANSPARENT );
 pdc->SetTextColor( RGB(55,55,55) );
 pdc->SelectObject( m_fntTitle );
 UINT nFormat = DT_BOTTOM|DT_SINGLELINE|DT_END_ELLIPSIS;//|DT_RIGHT;//*|DT_RTLREADING*/|DT_NOCLIP;//DT_INTERNAL

 this->m_rcTitle.SetRect(0,0,rcClient.Width(),0);
 pdc->DrawText( this->m_strTitle, this->m_rcTitle, DT_SINGLELINE|DT_CALCRECT  );
 pdc->DrawText( this->m_strTitle, this->m_rcTitle, nFormat );
 pdc->FrameRect( this->m_rcTitle, &CBrush(RGB(255,0,0)) );

 CRect rcrc(this->m_rcTitle); rcrc.top = rcrc.bottom; rcrc.bottom ++;
         rcrc.left +=6; //rcrc.right = 200;
 XTPDrawHelpers()->GradientFill( pdc, rcrc, this->m_clrGradientTop, this->m_clrGradientBottom, TRUE); 
 
}

Note: I used arabic characters, and drawing from right to left; the application initialized first with (CWinApp)this->SetDefaultLayout( LAYOUT_RTL );