VB 如何用程式來設定 "靜音"
VB 如何用程式來設定 "靜音"
<< VB6 >>
' API 宣告
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" _
(ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Private Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA" _
(ByVal hWnd1 As Long, ByVal hWnd2 As Long, ByVal lpsz1 As String, ByVal lpsz2 As String) As Long
Private Declare Function SendMessageLong& Lib "user32" Alias "SendMessageA" _
(ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long)
Private Declare Function PostMessage Lib "user32" Alias "PostMessageA" _
(ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Private Sub Command1_Click()
Quiet ' 方法 1
' 或
Silence ' 方法 2
' 擇其一即可
End Sub
Private Sub Quiet()
Dim lngWnd As Long
Shell "SndVol32 /T"
Do Until lngWnd
lngWnd = FindWindow("Tray Volume", vbNullString)
DoEvents
Loop
lngWnd = FindWindowEx(lngWnd, 0&, "Button", vbNullString)
SendMessageLong lngWnd, 256, 32, 0&
SendMessageLong lngWnd, 257, 32, 0&
On Error Resume Next
SetFocus
End Sub
Private Sub Silence()
Dim lngVolHnd As Long, lngHnd As Long
Shell "SndVol32", vbHide
Do Until lngVolHnd
lngVolHnd = FindWindow("Volume Control", vbNullString)
DoEvents
Loop
lngHnd = FindWindowEx(lngVolHnd, 0&, "Button", vbNullString)
lngHnd = FindWindowEx(lngVolHnd, lngHnd, "Button", vbNullString)
SendMessageLong lngHnd, 256, 32, 0&
SendMessageLong lngHnd, 257, 32, 0&
PostMessage lngVolHnd, 16, 0&, 0&
End Sub
' ================================================================
<< VB.Net >>
請將 VB6 的 Code 轉成 VB.Net 即可
PS : 前陣子回覆網友的問題 ( 蠻怪的做法 ) ， 不過還是Po 出給網友參考看看 !
