폰트 크기에서 폰트 높이로 단위 변환

        [DllImport("user32.dll")]

        public static extern IntPtr GetDC(IntPtr ptr);

        [DllImport("user32.dll")]

        public static extern bool ReleaseDC(IntPtr hWnd, IntPtr hDc);

        [DllImport("kernel32.dll")]

        static extern int MulDiv(int nNumber, int nNumerator, int nDenominator);

        [DllImport("gdi32.dll")]

        static extern int GetDeviceCaps(IntPtr hdc, int nIndex);

        private int GetFontHeight(int pt)

        {

            IntPtr hdc = GetDC(this.Handle);

            int height = -MulDiv(pt, GetDeviceCaps(hdc, 90/*LOGPIXELSY*/), 72);

            ReleaseDC(this.Handle, hdc);

            return height;

        }

출저 : http://www.devpia.com/Maeul/Contents/Detail.aspx?BoardID=50&MAEULNo=20&no=803896&ref=803896