调用API,user32.dll[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, uint wParam, uint lParam);
const uint WM_APPCOMMAND = 0x319;
const uint APPCOMMAND_VOLUME_UP = 0x0a;
const uint APPCOMMAND_VOLUME_DOWN = 0x09;
const uint APPCOMMAND_VOLUME_MUTE = 0x08;
public Form1()
{
InitializeComponent();
} private void button1_Click(object sender, EventArgs e)
{ //加音量
SendMessage(this.Handle, WM_APPCOMMAND, 0x30292, APPCOMMAND_VOLUME_UP * 0x10000); }
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