1.在演示文稿插入图像控件，打开属性窗口，将picture设成你想拖动的图片，遗憾的是Image控件不支持透明。

2. 双击图像控件，打开的VBA编辑窗口（注意双击后已有两行代码，先删除），复制下面的代码：
Dim X1, Y1 As Integer
Dim Down As Boolean
Private Sub Image1_MouseDown(ByVal Button As Integer, ByVal Shift As Integer, ByVal X As Single, ByVal Y As Single)
If Not Down Then
X1 = X
Y1 = Y
Down = True
End If
End Sub
Private Sub Image1_MouseMove(ByVal Button As Integer, ByVal Shift As Integer, ByVal X As Single, ByVal Y As Single)
If Down Then
Image1.Left = Image1.Left + X - X1
Image1.Top = Image1.Top + Y - Y1
X1 = X
Y1 = Y
End If
End Sub
Private Sub Image1_MouseUp(ByVal Button As Integer, ByVal Shift As Integer, ByVal X As Single, ByVal Y As Single)
Down = False
SlideShowWindows(1).View.First
End Sub

运行，OK。

代码很简单，如果你想拖动多张图片，如法炮制，复制上面的三个鼠标事件，修改Image1、X1、Y1。