绑定窗口后台，老是失败啊，要怎么做呢
set dm = createobject("dm.dmsoft")
hwnd = dm.GetMousePointWindow()
dm_ret = dm.BindWindow(hwnd, "normal", "dx", "normal", 0)
If (dm_ret) Then
MsgBox "yes"
Else
MsgBox "no"
End If
dm.MoveTo 375,624
Delay 100
dm.LeftClick
Delay 100
dm.LeftClick