vb如何使电脑黑屏

发布网友发布时间：2024-10-04 23:11

共1个回答

热心网友时间：2024-10-05 09:29

Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd _
As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Const WM_SYSCOMMAND = &H112&
Const SC_MONITORPOWER = &HF170&

Private Sub Command1_Click()
SendMessage Me.hwnd, WM_SYSCOMMAND, SC_MONITORPOWER, ByVal 2& '关闭显示器

End Sub
'如果要一直黑下去就采用一秒钟运行这个命令
SendMessage Me.hwnd, WM_SYSCOMMAND, SC_MONITORPOWER, ByVal 2& '关闭显示器

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