简单:
Dim oX, oY
Private Sub Image1_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
oX = X: oY = Y
End Sub
Private Sub Image1_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
If Button <> 1 Then Exit Sub
Image1.Move Image1.Left + X - oX, Image1.Top + Y - oX
End Sub