TextSelection.IsEmpty 속성

아티클
08/22/2008

업데이트: 2007년 11월

앵커 지점이 활성 지점과 같은지 여부를 가져옵니다.

네임스페이스: EnvDTE
어셈블리: EnvDTE(EnvDTE.dll)

구문

ReadOnly Property IsEmpty As Boolean

Dim instance As TextSelection
Dim value As Boolean

value = instance.IsEmpty

bool IsEmpty { get; }

property bool IsEmpty {
    bool get ();
}

function get IsEmpty () : boolean

속성 값

형식: System.Boolean

앵커 지점이 활성 지점과 같으면 True를 나타내고 그렇지 않으면 False를 나타내는 부울 값입니다.

설명

IsEmpty는 선택한 텍스트의 앵커 끝과 활성 끝이 텍스트 문서에서 같은 위치에 있는지 여부를 반환합니다.

예제

Sub IsEmptyExample()
    ' Before running this example, open a text document.
    Dim objSel As TextSelection = DTE.ActiveDocument.Selection
    If objSel.IsEmpty Then
        ' If there is no text selected, swap the words before and after 
        ' the insertion point. We begin by selecting the word before 
        ' the insertion point.
        objSel.WordLeft(True)
        If Not objSel.IsEmpty Then
            ' We can continue only if the selection was not already at 
            ' the beginning of the document.
            Dim strBefore As String = objSel.Text

            ' The text is saved in strBefore; now delete it and move 
            ' past the following word.
            objSel.Delete()
            objSel.WordRight(True)
            If objSel.Text.StartsWith(" ") Or objSel.Text.StartsWith(Microsoft.VisualBasic.ControlChars.Tab) Then
                ' The previous call to WordRight may have skipped some 
                ' white space instead of an actual word. In that case, 
                ' we should call it again.
                objSel.WordRight(True)
            End If

            ' Insert the new text at the end of the selection.
            objSel.Insert(strBefore, vsInsertFlags.vsInsertFlagsInsertAtEnd)
        End If
    Else
        ' If some text is selected, replace the following word with the 
        ' selected text.
        Dim strSelected As String = objSel.Text

        objSel.MoveToPoint(objSel.BottomPoint)
        objSel.WordRight(True)
        If objSel.Text.StartsWith(" ") Or objSel.Text.StartsWith(Microsoft.VisualBasic.ControlChars.Tab) Then
            ' The previous call to WordRight may have skipped some 
            ' white space instead of an actual word. In that case, we 
            ' should call it again.
            objSel.WordRight(True)
        End If

        ' Insert the text, overwriting the existing text and leaving 
        ' the selection containing the inserted text.
        objSel.Insert(strSelected, vsInsertFlags.vsInsertFlagsContainNewText)
    End If
End Sub