Rotate Text

#include <cmath>

// pDC : pointer to your device-context

// str : the text

// rect: the rectangle

// nOptions: can be a combination of ETO_CLIPPED and ETO_OPAQUE

void DrawRotatedText(CDC* pDC, const CString str, CRect rect, 
                     double angle, UINT nOptions = 0)
{
   // convert angle to radian

   double pi = 3.141592654;
   double radian = pi * 2 / 360 * angle;
 
   // get the center of a not-rotated text

   CSize TextSize = pDC->GetTextExtent(str);
   CPoint center;
   center.x = TextSize.cx / 2;
   center.y = TextSize.cy / 2;
 
   // now calculate the center of the rotated text

   CPoint rcenter;
   rcenter.x = long(cos(radian) * center.x - sin(radian) * center.y);
   rcenter.y = long(sin(radian) * center.x + cos(radian) * center.y);
 
   // finally draw the text and move it to the center of the rectangle

   pDC->SetTextAlign(TA_BASELINE);
   pDC->SetBkMode(TRANSPARENT);
   pDC->ExtTextOut(rect.left + rect.Width() / 2 - rcenter.x, 
                   rect.top + rect.Height() / 2 + rcenter.y,
                   nOptions, rect, str, NULL);
}