winform自定义控件（gdi+）——测量文本大小（MeasureString）

1、MeasureString(String, Font) 代码：

   string measureString = "Measure String";

            Font stringFont1 = new Font("Arial", 60);             SizeF layoutSize = new SizeF(200.0F, 50.0F);

            // Measure string.             SizeF stringSize = new SizeF();             stringSize = e.Graphics.MeasureString(measureString, stringFont1);             // Draw rectangle representing size of string.             e.Graphics.DrawRectangle(new Pen(Color.Red, 1), 0.0F, 0.0F, stringSize.Width, stringSize.Height);             // Draw string to screen.             e.Graphics.DrawString(measureString, stringFont1, Brushes.Black, new PointF(0, 0)); 输出：

说明： 测量的大小随着字体的增大而增大。

2、MeasureString(String, Font, SizeF) 代码：

  // Set up string.             string measureString = "Measure String";

            Font stringFont1 = new Font("Arial", 6);             SizeF layoutSize = new SizeF(200.0F, 50.0F);

            // Measure string.             SizeF stringSize = new SizeF();             stringSize = e.Graphics.MeasureString(measureString, stringFont1, layoutSize);             // Draw rectangle representing size of string.             e.Graphics.DrawRectangle(new Pen(Color.Red, 1), 0.0F, 0.0F, stringSize.Width, stringSize.Height);             // Draw string to screen.             e.Graphics.DrawString(measureString, stringFont1, Brushes.Black, new PointF(0, 0));

            Font stringFont2 = new Font("Arial", 16);             stringSize = e.Graphics.MeasureString(measureString, stringFont2, layoutSize);             // Draw rectangle representing size of string.             e.Graphics.DrawRectangle(new Pen(Color.Red, 1), 0, 100F, stringSize.Width, stringSize.Height);             // Draw string to screen.             e.Graphics.DrawString(measureString, stringFont2, Brushes.Black, new PointF(0, 100));

            Font stringFont3 = new Font("Arial", 56);             // Set maximum layout size.             stringSize = e.Graphics.MeasureString(measureString, stringFont3, layoutSize);             // Draw rectangle representing size of string.             e.Graphics.DrawRectangle(new Pen(Color.Red, 1), 0.0F, 300F, stringSize.Width, stringSize.Height);             // Draw string to screen.             e.Graphics.DrawString(measureString, stringFont3, Brushes.Black, new PointF(0, 30 输出：

说明： 最后一个size指定了文本的最大区域，当字体超出最大区域的时候，矩形就不能包含字体了。

3、MeasureString(String, Font, Int32) 最后一个参数限制宽度，功能和MeasureString(String, Font, SizeF)相同。

4、MeasureString(String, Font, PointF, StringFormat) 代码：

 // Set up string.             string measureString = "Measure String";             Font stringFont = new Font("Arial", 16);

            // Set point for upper-left corner of string.             float x = 50.0F;             float y = 50.0F;             PointF ulCorner = new PointF(x, y);

            // Set string format.             StringFormat newStringFormat = new StringFormat();             newStringFormat.FormatFlags = StringFormatFlags.DirectionVertical;

            // Measure string.             SizeF stringSize = new SizeF();             stringSize = e.Graphics.MeasureString(measureString, stringFont, ulCorner, newStringFormat);

            // Draw rectangle representing size of string.             e.Graphics.DrawRectangle(new Pen(Color.Red, 1), x, y, stringSize.Width, stringSize.Height);

            // Draw string to screen.             e.Graphics.DrawString(measureString, stringFont, Brushes.Black, ulCorner, newStringFormat); 输出

说明：可以指定文本格式 ———————————————— 版权声明：本文为CSDN博主「上位机软件」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。 原文链接：https://blog.csdn.net/qq_34059233/article/details/119911808