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TextSelection.IsEmpty Özellik

  • Makale

Bağlantı noktası etkin noktaya eşit olup olmadığını alır.

Ad alanı:  EnvDTE
Derleme:  EnvDTE (EnvDTE.dll içinde)

Sözdizimi

'Bildirim
ReadOnly Property IsEmpty As Boolean

bool IsEmpty { get; }

property bool IsEmpty {
    bool get ();
}

abstract IsEmpty : bool with get

function get IsEmpty () : boolean

Özellik Değeri

Tür: Boolean
Belirten bir Boole değeri True bağlantı noktası etkin noktasına eşit ise, False değilse.

Notlar

IsEmptymetin seçimin çapa ve etkin uçları metni belgede aynı konumda olup olmadığını döndürür.

Örnekler

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 
        ' text selection.
        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

.NET Framework Güvenliği

Ayrıca bkz.

Başvuru

TextSelection Arabirim

EnvDTE Ad Alanı