[C#/WPF] RichTextBox 클래스 : 선택 오프셋 설정하기

■ RichTextBox 클래스에서 선택 오프셋을 설정하는 방법을 보여준다.

▶ 예제 코드 (C#)


using System.Windows.Controls;
using System.Windows.Documents;

/// <summary>
/// 선택 오프셋
/// </summary>
public struct SelectionOffset
{
    /// <summary>
    /// 시작 인덱스
    /// </summary>
    public int StartIndex;

    /// <summary>
    /// 종료 인덱스
    /// </summary>
    public int EndIndex;
}

#region 선택 오프셋 설정하기 - SetSelectionOffset(richTextBox, selectionOffset)

/// <summary>
/// 선택 오프셋 설정하기
/// </summary>
/// <param name="richTextBox">리치 텍스트 박스</param>
/// <param name="selectionOffset">선택 오프셋</param>
public void SetSelectionOffset(RichTextBox richTextBox, SelectionOffset selectionOffset)
{
    TextPointer textPointer = richTextBox.Document.ContentStart;

    richTextBox.Selection.Select
    (
        textPointer.GetPositionAtOffset(selectionOffset.StartIndex),
        textPointer.GetPositionAtOffset(selectionOffset.EndIndex  )
    );
}

#endregion

using System.Windows.Controls;

using System.Windows.Documents;

/// <summary>

/// 선택 오프셋

/// </summary>

public struct SelectionOffset

{

/// <summary>

/// 시작 인덱스

/// </summary>

public int StartIndex;

/// <summary>

/// 종료 인덱스

/// </summary>

public int EndIndex;

}

#region 선택 오프셋 설정하기 - SetSelectionOffset(richTextBox, selectionOffset)

/// <summary>

/// 선택 오프셋 설정하기

/// </summary>

/// <param name="richTextBox">리치 텍스트 박스</param>

/// <param name="selectionOffset">선택 오프셋</param>

public void SetSelectionOffset(RichTextBox richTextBox, SelectionOffset selectionOffset)

{

TextPointer textPointer = richTextBox.Document.ContentStart;

richTextBox.Selection.Select

(

textPointer.GetPositionAtOffset(selectionOffset.StartIndex),

textPointer.GetPositionAtOffset(selectionOffset.EndIndex )

);

}

#endregion