FormattedText.SetFontSize Method

Definition

Namespace:

System.Windows.Media

Assembly:

PresentationCore.dll

Sets the font size.

Overloads

SetFontSize(Double)	Sets the font size for the entire set of characters in the FormattedText object.
SetFontSize(Double, Int32, Int32)	Sets the font size for a specified subset of characters in the FormattedText object.

SetFontSize(Double)

Sets the font size for the entire set of characters in the FormattedText object.

public:
 void SetFontSize(double emSize);

public void SetFontSize (double emSize);

member this.SetFontSize : double -> unit

Public Sub SetFontSize (emSize As Double)

Parameters

emSize

Double

The font 'em' measure size, provided in device-independent units (1/96th inch per unit).

Remarks

This method sets the font size value for the entire text string. To set the font size value for a subset of the text string, use the SetFontSize method.

SetFontSize(Double, Int32, Int32)

Sets the font size for a specified subset of characters in the FormattedText object.

public:
 void SetFontSize(double emSize, int startIndex, int count);

public void SetFontSize (double emSize, int startIndex, int count);

member this.SetFontSize : double * int * int -> unit

Public Sub SetFontSize (emSize As Double, startIndex As Integer, count As Integer)

Parameters

emSize

Double

The font 'em' measure size, provided in device-independent units (1/96th inch per unit).

startIndex

Int32

The start index of the initial character to apply the font size to.

count

Int32

The number of characters to apply the font size to.

Examples

The following example creates a FormattedText object and then applies several formatting styles to the text, including SetFontSize.

protected override void OnRender(DrawingContext drawingContext)
{
    string testString = "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor";

    // Create the initial formatted text string.
    FormattedText formattedText = new FormattedText(
        testString,
        CultureInfo.GetCultureInfo("en-us"),
        FlowDirection.LeftToRight,
        new Typeface("Verdana"),
        32,
        Brushes.Black);

    // Set a maximum width and height. If the text overflows these values, an ellipsis "..." appears.
    formattedText.MaxTextWidth = 300;
    formattedText.MaxTextHeight = 240;

    // Use a larger font size beginning at the first (zero-based) character and continuing for 5 characters.
    // The font size is calculated in terms of points -- not as device-independent pixels.
    formattedText.SetFontSize(36 * (96.0 / 72.0), 0, 5);

    // Use a Bold font weight beginning at the 6th character and continuing for 11 characters.
    formattedText.SetFontWeight(FontWeights.Bold, 6, 11);

    // Use a linear gradient brush beginning at the 6th character and continuing for 11 characters.
    formattedText.SetForegroundBrush(
                            new LinearGradientBrush(
                            Colors.Orange,
                            Colors.Teal,
                            90.0),
                            6, 11);

    // Use an Italic font style beginning at the 28th character and continuing for 28 characters.
    formattedText.SetFontStyle(FontStyles.Italic, 28, 28);

    // Draw the formatted text string to the DrawingContext of the control.
    drawingContext.DrawText(formattedText, new Point(10, 0));
}

Protected Overrides Sub OnRender(ByVal drawingContext As DrawingContext)
    Dim testString As String = "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor"

    ' Create the initial formatted text string.
    Dim formattedText As New FormattedText(testString, CultureInfo.GetCultureInfo("en-us"), FlowDirection.LeftToRight, New Typeface("Verdana"), 32, Brushes.Black)

    ' Set a maximum width and height. If the text overflows these values, an ellipsis "..." appears.
    formattedText.MaxTextWidth = 300
    formattedText.MaxTextHeight = 240

    ' Use a larger font size beginning at the first (zero-based) character and continuing for 5 characters.
    ' The font size is calculated in terms of points -- not as device-independent pixels.
    formattedText.SetFontSize(36 * (96.0 / 72.0), 0, 5)

    ' Use a Bold font weight beginning at the 6th character and continuing for 11 characters.
    formattedText.SetFontWeight(FontWeights.Bold, 6, 11)

    ' Use a linear gradient brush beginning at the 6th character and continuing for 11 characters.
    formattedText.SetForegroundBrush(New LinearGradientBrush(Colors.Orange, Colors.Teal, 90.0), 6, 11)

    ' Use an Italic font style beginning at the 28th character and continuing for 28 characters.
    formattedText.SetFontStyle(FontStyles.Italic, 28, 28)

    ' Draw the formatted text string to the DrawingContext of the control.
    drawingContext.DrawText(formattedText, New Point(10, 0))
End Sub

Remarks

To set the font size value for the entire text string, use the SetFontSize method.