Sub CopyChartsIntoPowerPoint()
''' COPY SELECTED EXCEL CHARTS INTO POWERPOINT
' Set a VBE reference to Microsoft PowerPoint Object Library

Dim pptApp As PowerPoint.Application
Dim iShapeIx As Integer, iShapeCt As Integer
Dim myShape As Shape, myChart As ChartObject
Dim bCopied As Boolean

Set pptApp = GetObject(, "PowerPoint.Application")

If ActiveChart Is Nothing Then
    ''' SELECTION IS NOT A SINGLE CHART
    On Error Resume Next
    iShapeCt = Selection.ShapeRange.count
    If Err Then
        MsgBox "Select charts and try again", vbCritical, "Nothing Selected"
        Exit Sub
    End If
    On Error GoTo  0 
    For Each myShape In Selection.ShapeRange
        ''' IS SHAPE A CHART?
        On Error Resume Next
        Set myChart = ActiveSheet.ChartObjects(myShape.name)
        If Not Err Then
            bCopied = CopyChartToPowerPoint(pptApp, myChart)
        End If
        On Error GoTo  0 
    Next
Else
    ''' CHART ELEMENT OR SINGLE CHART IS SELECTED
    Set myChart = ActiveChart.Parent
    bCopied = CopyChartToPowerPoint(pptApp, myChart)
End If

Dim myPptShape As PowerPoint.Shape
Dim myScale As Single
Dim iShapesCt As Integer

''' BAIL OUT IF NO PICTURES ON SLIDE
On Error Resume Next
iShapesCt = pptApp.ActiveWindow.Selection.SlideRange.Shapes.count
If Err Then
    MsgBox "There are no shapes on the active slide", vbCritical, "No Shapes"
    Exit Sub
End If
On Error GoTo  0 

''' ASK USER FOR SCALING FACTOR
myScale = InputBox(Prompt:="Enter a scaling factor for the shapes (percent)", _
    Title:="Enter Scaling Percentage") /  100 

''' LOOP THROUGH SHAPES AND RESCALE "PICTURES"
For Each myPptShape In pptApp.ActiveWindow.Selection.SlideRange.Shapes
    If myPptShape.name Like "Picture*" Then
        With myPptShape
            .ScaleWidth myScale, msoTrue, msoScaleFromMiddle
            .ScaleHeight myScale, msoTrue, msoScaleFromMiddle
        End With
    End If
Next

Set myChart = Nothing
Set myShape = Nothing
Set myPptShape = Nothing
Set pptApp = Nothing
End Sub

Function CopyChartToPowerPoint(oPPtApp As PowerPoint.Application, _
    oChart As ChartObject)
CopyChartToPowerPoint = False

oChart.Chart.CopyPicture Appearance:=xlScreen, Format:=xlPicture, Size:=xlScreen
oPPtApp.ActiveWindow.View.Paste

CopyChartToPowerPoint = True
End Function