TextSelection.IsEmpty Propriété

Définition

Obtient une valeur indiquant si le point d'ancrage équivaut au point actif.

public:
 property bool IsEmpty { bool get(); };
public:
 property bool IsEmpty { bool get(); };
[System.Runtime.InteropServices.DispId(10)]
public bool IsEmpty { [System.Runtime.InteropServices.DispId(10)] get; }
[<System.Runtime.InteropServices.DispId(10)>]
[<get: System.Runtime.InteropServices.DispId(10)>]
member this.IsEmpty : bool
Public ReadOnly Property IsEmpty As Boolean

Valeur de propriété

Boolean

Valeur booléenne indiquant True si le point d'ancrage équivaut au point actif, False dans le cas contraire.

Attributs

Exemples

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  

Remarques

IsEmpty retourne une valeur indiquant si les extrémités actives et d’ancrage de la sélection de texte se trouvent au même emplacement dans le document texte.

S’applique à