CharacterRange 構造体
アセンブリ: System.Drawing (system.drawing.dll 内)
構文
使用例
CharacterRange を作成し、これを利用して文字列の一部を強調表示する方法を次のコード例に示します。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 HighlightACharacterRange メソッドを呼び出します。
Private Sub HighlightACharacterRange(ByVal e As PaintEventArgs) ' Declare the string to draw. Dim message As String = _ "This is the string to highlight a word in." ' Declare the word to highlight. Dim searchWord As String = "string" ' Create a CharacterRange array with the searchWord ' location and length. Dim ranges() As CharacterRange = _ New CharacterRange() _ {New CharacterRange(message.IndexOf(searchWord), _ searchWord.Length)} ' Construct a StringFormat object. Dim stringFormat1 As New StringFormat ' Set the ranges on the StringFormat object. stringFormat1.SetMeasurableCharacterRanges(ranges) ' Declare the font to write the message in. Dim largeFont As Font = New Font(FontFamily.GenericSansSerif, _ 16.0F, GraphicsUnit.Pixel) ' Construct a new Rectangle. Dim displayRectangle As New Rectangle(20, 20, 200, 100) ' Convert the Rectangle to a RectangleF. Dim displayRectangleF As RectangleF = _ RectangleF.op_Implicit(displayRectangle) ' Get the Region to highlight by calling the ' MeasureCharacterRanges method. Dim charRegion() As Region = _ e.Graphics.MeasureCharacterRanges(message, _ largeFont, displayRectangleF, stringFormat1) ' Draw the message string on the form. e.Graphics.DrawString(message, largeFont, Brushes.Blue, _ displayRectangleF) ' Fill in the region using a semi-transparent color. e.Graphics.FillRegion(New SolidBrush(Color.FromArgb(50, _ Color.Fuchsia)), charRegion(0)) End Sub
private void HighlightACharacterRange(PaintEventArgs e) { // Declare the string to draw. string message = "This is the string to highlight a word in."; // Declare the word to highlight. string searchWord = "string"; // Create a CharacterRange array with the searchWord // location and length. CharacterRange[] ranges = new CharacterRange[]{new CharacterRange (message.IndexOf(searchWord), searchWord.Length)}; // Construct a StringFormat object. StringFormat stringFormat1 = new StringFormat(); // Set the ranges on the StringFormat object. stringFormat1.SetMeasurableCharacterRanges(ranges); // Declare the font to write the message in. Font largeFont = new Font(FontFamily.GenericSansSerif, 16.0F , GraphicsUnit.Pixel); // Construct a new Rectangle. Rectangle displayRectangle = new Rectangle(20, 20, 200, 100); // Convert the Rectangle to a RectangleF. RectangleF displayRectangleF = (RectangleF)displayRectangle; // Get the Region to highlight by calling the // MeasureCharacterRanges method. Region[] charRegion = e.Graphics.MeasureCharacterRanges(message, largeFont, displayRectangleF, stringFormat1); // Draw the message string on the form. e.Graphics.DrawString(message, largeFont, Brushes.Blue, displayRectangleF); // Fill in the region using a semi-transparent color. e.Graphics.FillRegion(new SolidBrush(Color.FromArgb(50, Color.Fuchsia)), charRegion[0]); largeFont.Dispose(); }
void HighlightACharacterRange( PaintEventArgs^ e ) { // Declare the string to draw. String^ message = "This is the string to highlight a word in."; // Declare the word to highlight. String^ searchWord = "string"; // Create a CharacterRange array with the searchWord // location and length. array<CharacterRange>^ temp = {CharacterRange( message->IndexOf( searchWord ), searchWord->Length )}; array<CharacterRange>^ranges = temp; // Construct a StringFormat object. StringFormat^ stringFormat1 = gcnew StringFormat; // Set the ranges on the StringFormat object. stringFormat1->SetMeasurableCharacterRanges( ranges ); // Declare the font to write the message in. System::Drawing::Font^ largeFont = gcnew System::Drawing::Font( FontFamily::GenericSansSerif,16.0F,GraphicsUnit::Pixel ); // Construct a new Rectangle. Rectangle displayRectangle = Rectangle(20,20,200,100); // Convert the Rectangle to a RectangleF. RectangleF displayRectangleF = displayRectangle; // Get the Region to highlight by calling the // MeasureCharacterRanges method. array<System::Drawing::Region^>^charRegion = e->Graphics->MeasureCharacterRanges( message, largeFont, displayRectangleF, stringFormat1 ); // Draw the message string on the form. e->Graphics->DrawString( message, largeFont, Brushes::Blue, displayRectangleF ); // Fill in the region using a semi-transparent color. e->Graphics->FillRegion( gcnew SolidBrush( Color::FromArgb( 50, Color::Fuchsia ) ), charRegion[ 0 ] ); delete largeFont; }
private void HighlightACharacterRange(PaintEventArgs e) { // Declare the string to draw. String message = "This is the string to highlight a word in."; // Declare the word to highlight. String searchWord = "string"; // Create a CharacterRange array with the searchWord // location and length. CharacterRange ranges[] = new CharacterRange[] { new CharacterRange(message.IndexOf(searchWord), searchWord.get_Length()) }; // Construct a StringFormat object. StringFormat stringFormat1 = new StringFormat(); // Set the ranges on the StringFormat object. stringFormat1.SetMeasurableCharacterRanges(ranges); // Declare the font to write the message in. Font largeFont = new Font(FontFamily.get_GenericSansSerif(), 16, GraphicsUnit.Pixel); // Construct a new Rectangle. Rectangle displayRectangle = new Rectangle(20, 20, 200, 100); // Convert the Rectangle to a RectangleF. RectangleF displayRectangleF = RectangleF.op_Implicit(displayRectangle); // Get the Region to highlight by calling the // MeasureCharacterRanges method. Region charRegion[] = e.get_Graphics().MeasureCharacterRanges(message, largeFont, displayRectangleF, stringFormat1); // Draw the message string on the form. e.get_Graphics().DrawString(message, largeFont, Brushes.get_Blue(), displayRectangleF); // Fill in the region using a semi-transparent color. e.get_Graphics().FillRegion(new SolidBrush(Color.FromArgb(50, Color.get_Fuchsia())), charRegion[0]); largeFont.Dispose(); } //HighlightACharacterRange
プラットフォーム
Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
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参照
- CharacterRange 構造体のページへのリンク