Graphics.TextContrast Graphics.TextContrast Graphics.TextContrast Graphics.TextContrast Property

Definición

Obtiene o establece el valor de corrección de gamma para la representación de texto.Gets or sets the gamma correction value for rendering text.

public:
 property int TextContrast { int get(); void set(int value); };
public int TextContrast { get; set; }
member this.TextContrast : int with get, set
Public Property TextContrast As Integer

Valor de propiedad

El valor de corrección gamma utilizado para representar texto con suavizado de contorno y ClearType.The gamma correction value used for rendering antialiased and ClearType text.

Ejemplos

En el ejemplo de código siguiente se muestra el TextRenderingHint uso TextContrast de las propiedades y.The following code example demonstrates the use of the TextRenderingHint and TextContrast properties.

Este ejemplo está diseñado para usarse con Windows Forms.This example is designed to be used with Windows Forms. Pegue el código en un formulario y ChangeTextRenderingHintAndTextContrast llame al método al controlar el evento del Paint formulario, pasando e como. PaintEventArgsPaste the code into a form and call the ChangeTextRenderingHintAndTextContrast method when handling the form's Paint event, passing e as PaintEventArgs.

private:
   void ChangeTextRenderingHintAndTextContrast( PaintEventArgs^ e )
   {
      // Retrieve the graphics object.
      Graphics^ formGraphics = e->Graphics;

      // Declare a new font.
      System::Drawing::Font^ myFont = gcnew System::Drawing::Font( FontFamily::GenericSansSerif,20,FontStyle::Regular );

      // Set the TextRenderingHint property.
      formGraphics->TextRenderingHint = System::Drawing::Text::TextRenderingHint::SingleBitPerPixel;

      // Draw the string.
      formGraphics->DrawString( "Hello World", myFont, Brushes::Firebrick, 20.0F, 20.0F );

      // Change the TextRenderingHint property.
      formGraphics->TextRenderingHint = System::Drawing::Text::TextRenderingHint::AntiAliasGridFit;

      // Draw the string again.
      formGraphics->DrawString( "Hello World", myFont, Brushes::Firebrick, 20.0F, 60.0F );

      // Set the text contrast to a high-contrast setting.
      formGraphics->TextContrast = 0;

      // Draw the string.
      formGraphics->DrawString( "Hello World", myFont, Brushes::DodgerBlue, 20.0F, 100.0F );

      // Set the text contrast to a low-contrast setting.
      formGraphics->TextContrast = 12;

      // Draw the string again.
      formGraphics->DrawString( "Hello World", myFont, Brushes::DodgerBlue, 20.0F, 140.0F );

      // Dispose of the font object.
      delete myFont;
   }
private void ChangeTextRenderingHintAndTextContrast(PaintEventArgs e)
{

    // Retrieve the graphics object.
    Graphics formGraphics = e.Graphics;

    // Declare a new font.
    Font myFont = new Font(FontFamily.GenericSansSerif, 20, 
        FontStyle.Regular);

    // Set the TextRenderingHint property.
    formGraphics.TextRenderingHint = 
        System.Drawing.Text.TextRenderingHint.SingleBitPerPixel;

    // Draw the string.
    formGraphics.DrawString("Hello World", myFont, 
        Brushes.Firebrick, 20.0F, 20.0F);

    // Change the TextRenderingHint property.
    formGraphics.TextRenderingHint = 
        System.Drawing.Text.TextRenderingHint.AntiAliasGridFit;

    // Draw the string again.
    formGraphics.DrawString("Hello World", myFont, 
        Brushes.Firebrick, 20.0F, 60.0F);

    // Set the text contrast to a high-contrast setting.
    formGraphics.TextContrast = 0;

    // Draw the string.
    formGraphics.DrawString("Hello World", myFont, 
        Brushes.DodgerBlue, 20.0F, 100.0F);

    // Set the text contrast to a low-contrast setting.
    formGraphics.TextContrast = 12;

    // Draw the string again.
    formGraphics.DrawString("Hello World", myFont, 
        Brushes.DodgerBlue, 20.0F, 140.0F);

    // Dispose of the font object.
    myFont.Dispose();

}
Private Sub ChangeTextRenderingHintAndTextContrast(ByVal e As _
    PaintEventArgs)

    ' Retrieve the graphics object.
    Dim formGraphics As Graphics = e.Graphics

    ' Declare a new font.
    Dim myFont As Font = New Font(FontFamily.GenericSansSerif, _
        20, FontStyle.Regular)

    ' Set the TextRenderingHint property.
    formGraphics.TextRenderingHint = _
        System.Drawing.Text.TextRenderingHint.SingleBitPerPixel

    ' Draw the string.
    formGraphics.DrawString("Hello World", myFont, _
        Brushes.Firebrick, 20.0F, 20.0F)

    ' Change the TextRenderingHint property.
    formGraphics.TextRenderingHint = _
        System.Drawing.Text.TextRenderingHint.AntiAliasGridFit

    ' Draw the string again.
    formGraphics.DrawString("Hello World", myFont, _
        Brushes.Firebrick, 20.0F, 60.0F)

    ' Set the text contrast to a high-contrast setting.
    formGraphics.TextContrast = 0

    ' Draw the string.
    formGraphics.DrawString("Hello World", myFont, _
        Brushes.DodgerBlue, 20.0F, 100.0F)

    ' Set the text contrast to a low-contrast setting.
    formGraphics.TextContrast = 12

    ' Draw the string again.
    formGraphics.DrawString("Hello World", myFont, _
        Brushes.DodgerBlue, 20.0F, 140.0F)

    ' Dispose of the font object.
    myFont.Dispose()

End Sub

Comentarios

El valor de corrección de gamma debe estar entre 0 y 12.The gamma correction value must be between 0 and 12. El valor predeterminado es 4.The default value is 4.

Se aplica a