Graphics.TextContrast プロパティ
アセンブリ: System.Drawing (system.drawing.dll 内)

Dim instance As Graphics Dim value As Integer value = instance.TextContrast instance.TextContrast = value
/** @property */ public int get_TextContrast () /** @property */ public void set_TextContrast (int value)
アンチエイリアス処理されたテキストおよび ClearType テキストを描画するために使用されるガンマ補正値。


TextRenderingHint プロパティと TextContrast プロパティの使用方法を示すコード例を次に示します。
この例は、Windows フォームでの使用を意図してデザインされています。コードをフォームに貼り付け、フォームの Paint イベントを処理するときに PaintEventArgs の e を渡して ChangeTextRenderingHintAndTextContrast メソッドを呼び出します。
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
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: 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.get_Graphics(); // Declare a new font. Font myFont = new Font(FontFamily.get_GenericSansSerif(), 20, FontStyle.Regular); // Set the TextRenderingHint property. formGraphics.set_TextRenderingHint(System.Drawing.Text. TextRenderingHint.SingleBitPerPixel); // Draw the string. formGraphics.DrawString("Hello World", myFont, Brushes.get_Firebrick(), 20, 20); // Change the TextRenderingHint property. formGraphics.set_TextRenderingHint(System.Drawing.Text. TextRenderingHint.AntiAliasGridFit); // Draw the string again. formGraphics.DrawString("Hello World", myFont, Brushes.get_Firebrick(), 20, 60); // Set the text contrast to a high-contrast setting. formGraphics.set_TextContrast(0); // Draw the string. formGraphics.DrawString("Hello World", myFont, Brushes.get_DodgerBlue(), 20, 100); // Set the text contrast to a low-contrast setting. formGraphics.set_TextContrast(12); // Draw the string again. formGraphics.DrawString("Hello World", myFont, Brushes.get_DodgerBlue(), 20, 140); // Dispose of the font object. myFont.Dispose(); } //ChangeTextRenderingHintAndTextContrast

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
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