[C#]Vista的核心音频API主音量控制

来源：互联网发布：java implements 编辑：程序博客网时间：2024/05/07 01:42

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Runtime.InteropServices;using System.Windows.Forms;//CoreAudioApi支持Vista/Win7，下面的代码 是最早的API 函数 支持不好  不推荐使用namespace SwitchIP{    class VolumeControl    {        [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;        //增大音量        public  void VolumeUp(){            SendMessage(this.Handle, WM_APPCOMMAND, 0x30292, APPCOMMAND_VOLUME_UP * 0x10000);           }        //降低音量        public  void VolumeDown() {            SendMessage(this.Handle, WM_APPCOMMAND, 0x30292, APPCOMMAND_VOLUME_DOWN * 0x10000);         }        //该函数会自动在静音和非静音状态下切换        public  void VolumeMute() {            SendMessage(myForm.Handle, WM_APPCOMMAND, 0x200eb0, APPCOMMAND_VOLUME_MUTE * 0x10000);         }                }}

参考 :http://www.codeproject.com/KB/vista/CoreAudio.aspx

非原创

using CoreAudioApi;/*QFord@QQ.COM需要引用CoreAudioApi.dll可在下面的链接中找到*/......private MMDevice defaultDevice = null;        */        //判断当前系统音频状态        private bool isMuted()        {           return defaultDevice.AudioEndpointVolume.Mute;        }        //静音        private void setMute()        {            defaultDevice.AudioEndpointVolume.Mute = true;        }        //解除静音        private void setUnMute()        {            defaultDevice.AudioEndpointVolume.Mute = false;        }        //初始化MMDevice        private void muteInit()        {            MMDeviceEnumerator devEnum = new MMDeviceEnumerator();            defaultDevice =             devEnum.GetDefaultAudioEndpoint(EDataFlow.eRender, ERole.eMultimedia);        }