打印时如何确定字符串的宽度？

Question

我正在创建一个自定义控件,其中一部分是使用Graphics类来向表单绘制文本.目前我正在使用以下代码来显示它:

private float _lineHeight { get { return this.Font.Size + 5; } }
private void Control_Paint(object sender, PaintEventArgs e)
{
    Graphics g = this.CreateGraphics();
    Brush b = new SolidBrush(Colors[7]);

    g.DrawString("Hello World!", this.Font, b, 0, 2);
    g.DrawString("This has been a test of the emergency drawing system!",
        this.Font, b, 0, 2 + _lineHeight);
}

我目前正在使用固定宽度字体,我想知道字体显示的宽度,但似乎没有这种信息的任何属性.有没有办法获得它？我想要它所以我可以在显示时正确包裹线条.

Answer 1

是的,你可以使用MeasureString从图形类

此方法返回SizeF结构,该结构表示由PageUnit属性指定的单位的大小,该大小由text参数指定的字符串(使用font参数绘制).

private void MeasureStringMin(PaintEventArgs e)
{

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

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

    // 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, stringFont, Brushes.Black, new PointF(0, 0));
}