Szerkesztés

Megosztás a következőn keresztül:

FontFamily.GetEmHeight(FontStyle) Method

  • Reference

Definition

Namespace:
System.Drawing
Assembly:
System.Drawing.Common.dll
Assembly:
System.Drawing.dll
Package:
System.Drawing.Common v8.0.10
Package:
System.Drawing.Common v9.0.0-rc.2.24474.1
Source:
FontFamily.cs
Source:
FontFamily.cs
Source:
FontFamily.cs
Source:
FontFamily.cs
Source:
FontFamily.cs

Gets the height, in font design units, of the em square for the specified style.

public:
 int GetEmHeight(System::Drawing::FontStyle style);
public int GetEmHeight (System.Drawing.FontStyle style);
member this.GetEmHeight : System.Drawing.FontStyle -> int
Public Function GetEmHeight (style As FontStyle) As Integer

Parameters

style
FontStyle

The FontStyle for which to get the em height.

Returns

Int32

The height of the em square.

Examples

The following code example is designed for use with Windows Forms, and it requires PaintEventArgs e, which is a parameter of the Paint event handler. The code performs the following actions:

  • Creates a FontFamily.

  • Gets the em square height for that font family.

  • Draws the value of the em height to the screen as text.

public:
   void GetEmHeight_Example( PaintEventArgs^ e )
   {
      // Create a FontFamily object.
      FontFamily^ emFontFamily = gcnew FontFamily( "arial" );

      // Get the em height of the font family in design units.
      int emHeight = emFontFamily->GetEmHeight( FontStyle::Regular );

      // Draw the result as a string to the screen.
      e->Graphics->DrawString( String::Format( "emFontFamily.GetEmHeight() returns {0}.", emHeight ),
            gcnew System::Drawing::Font( emFontFamily,16 ), Brushes::Black, PointF(0,0) );
   }

public void GetEmHeight_Example(PaintEventArgs e)
{
    // Create a FontFamily object.
    FontFamily emFontFamily = new FontFamily("arial");
             
    // Get the em height of the font family in design units.
    int emHeight = emFontFamily.GetEmHeight(FontStyle.Regular);
             
    // Draw the result as a string to the screen.
    e.Graphics.DrawString(
        "emFontFamily.GetEmHeight() returns " + emHeight.ToString() + ".",
        new Font(emFontFamily, 16),
        Brushes.Black,
        new PointF(0, 0));
}

Public Sub GetEmHeight_Example(ByVal e As PaintEventArgs)

    ' Create a FontFamily object.
    Dim emFontFamily As New FontFamily("arial")

    ' Get the em height of the font family in design units.
    Dim emHeight As Integer = _
    emFontFamily.GetEmHeight(FontStyle.Regular)

    ' Draw the result as a string to the screen.
    e.Graphics.DrawString("emFontFamily.GetEmHeight() returns " & _
    emHeight.ToString() + ".", New Font(emFontFamily, 16), _
    Brushes.Black, New PointF(0, 0))
End Sub

Remarks

Em square is a typography term that refers to the rectangle occupied by the font's widest letter, traditionally the letter M.

Applies to

See also