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Powerpoint中存在形状

shape powerpoint vba

1

user6089076 · 技术社区 · 8 年前

我想在启用宏的powerpoint演示文稿上的命令按钮上建立一个条件。如果该形状存在,那么我希望将其删除,否则按钮应生成一条关于不存在此类形状的声明。目前我的存在有问题。。。!如何让Power point识别形状为空?这是我的代码:

If ActivePresentation.Slides(3).Shapes("Picture") Is Nothing Then
  MsgBox "no Picture"
Else
  ActivePresentation.Slides(3).Shapes("Picture").Delete
  MsgBox "Picture Cleared"
End If

此代码只会产生错误,因为形状不存在,所以第一个if语句失败。也许我们需要检查它是否在选择窗格中?

2 回复 | 直到 8 年前

1

4

Steve Rindsberg 8 年前

其他一些建议会奏效,但一般来说,除非绝对必要,否则依赖选择是不好的做法。相反,您可以调用稍微不同的函数:

Function ShapeExists(ByVal oSl as Slide, ByVal ShapeName as String) as Boolean
   Dim oSh as Shape
   For Each oSh in oSl.Shapes
     If oSh.Name = ShapeName Then
        ShapeExists = True
        Exit Function
     End If
   Next ' Shape
   ' No shape here, so though it's not strictly necessary:
   ShapeExists = False
End Function

您还可以修改此选项,以便在找到形状时返回对该形状的引用,如果没有,则不返回任何内容。

如果您不喜欢使用早期退出功能,那么有一些简单的方法可以解决这个问题。

2

3

QHarr 8 年前

正如@DavidMeedham在评论中的链接所示(@ TimWilliams answer ),可以使用类似的构造,如下所示:

Option Explicit

Sub test()

Dim shp As Shape
Dim myshapeName As String
myshapeName = "Picture"
Dim sl As Slide

Set sl = ActivePresentation.Slides(1)

 If shapePresent(sl, myshapeName) Then

     sl.Shapes(myshapeName).Delete

 Else

    MsgBox myshapeName & " not present"

 End If

End Sub


Private Function shapePresent(ByVal sl As Slide, ByVal myshapeName As String) As Boolean

   On Error GoTo errhand

   sl.Shapes(myshapeName).Select

   shapePresent = True
   Exit Function

errhand:

shapePresent = False
Err.Clear

End Function

使用与该答案相同的格式:

Private Function shapePresent(ByVal sl As Slide, ByVal myshapeName As String) As Boolean

    Dim myShape As Shape

    On Error Resume Next

    Set myShape = sl.Shapes(myshapeName)

    On Error GoTo 0

    shapePresent = Not myShape Is Nothing

End Function