使用Windows API控制系统音量及静音
一、引入API定义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;
二、 提高音量
SendMessage(this.Handle, WM_APPCOMMAND, 0x30292, APPCOMMAND_VOLUME_UP * 0x10000);
三、 降低音量
SendMessage(this.Handle, WM_APPCOMMAND, 0x30292, APPCOMMAND_VOLUME_DOWN * 0x10000);
四、 静音与恢复（执行2次恢复原状态）
SendMessage(this.Handle, WM_APPCOMMAND, 0x200eb0, APPCOMMAND_VOLUME_MUTE * 0x10000);
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