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復(fù)制內(nèi)容到剪貼板 程序代碼
'新建EXE工程,添加三個按鈕.
'按鈕一是音量增加,按鈕二是音量減少,按鈕三是靜音切換.
Option Explicit

Private Declare Function SendMessage Lib "user32.dll" Alias "SendMessageA" ( _
                          ByVal hwnd As Long, _
                          ByVal wMsg As Long, _
                          ByVal wParam As Long, _
                          ByVal lParam As Long) As Long

Private Const WM_APPCOMMAND As Long = &H319
Private Const APPCOMMAND_VOLUME_UP As Long = 10
Private Const APPCOMMAND_VOLUME_DOWN As Long = 9
Private Const APPCOMMAND_VOLUME_MUTE As Long = 8

Private Sub Command1_Click()
    '音量增加
    SendMessage Me.hwnd, WM_APPCOMMAND, &H30292, APPCOMMAND_VOLUME_UP * &H10000
End Sub

Private Sub Command2_Click()
    '音量減少
    SendMessage Me.hwnd, WM_APPCOMMAND, &H30292, APPCOMMAND_VOLUME_DOWN * &H10000
End Sub

Private Sub Command3_Click()
    '靜音
    SendMessage Me.hwnd, WM_APPCOMMAND, &H200EB0, APPCOMMAND_VOLUME_MUTE * &H10000
End Sub