根据字体大小得到字符串显示时的宽度
字符串的宽度自适应容器
Graphics g = Graphics.FromImage(new Bitmap(1, 1)); SizeF size = g.MeasureString(lblTitle.Text, new Font(“宋体“, 24 * 0.0625F, FontStyle.Bold)); float oldSize=(800*0.0625F);//1px=0.0625em float newSize = (0.75F/size.Width )* oldSize;size.Width 的单位是em
