C# win7 win10 系统音量控制 CoreAudioApi源码 显示峰值
本帖最后由 wtujoxk 于 2018-8-20 15:51 编辑直接上图：
using System;
using System.Windows.Forms;
namespace CoreAudioApi
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
MMDevice device;
private void Form1_Load(object sender, EventArgs e)
{
//初始化设备
MMDeviceEnumerator devEnum = new MMDeviceEnumerator();
device = devEnum.GetDefaultAudioEndpoint(EDataFlow.eRender, ERole.eMultimedia);
}
/// <summary>
/// 获取当前音量
/// </summary>
public int CurrentVolume
{
get => Convert.ToInt32(device.AudioEndpointVolume.MasterVolumeLevelScalar * 100.0f);
}
/// <summary>
/// 设置音量
/// </summary>
public int SetVolume
{
get => CurrentVolume;
set
{
if (value < 0) device.AudioEndpointVolume.MasterVolumeLevelScalar = 0 / 100.0f;
else if (value > 100) device.AudioEndpointVolume.MasterVolumeLevelScalar = 100 / 100.0f;
else device.AudioEndpointVolume.MasterVolumeLevelScalar = value / 100.0f;
}
}
/// <summary>
/// 定时器更新并显示当前音量和峰值
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void timer1_Tick(object sender, EventArgs e)
{
label1.Text = "当前音量："+ CurrentVolume;
//使用Convert.ToInt32转换没有误差
progressBar1.Value = Convert.ToInt32(device.AudioMeterInformation.MasterPeakValue * 100.0f);
progressBar2.Value = Convert.ToInt32(device.AudioMeterInformation.PeakValues * 100.0f);
progressBar3.Value = Convert.ToInt32(device.AudioMeterInformation.PeakValues * 100.0f);
}
private void button1_Click(object sender, EventArgs e)
{
//每点击一次，音量加10
SetVolume += 10;
}
private void button2_Click(object sender, EventArgs e)
{
//每点击一次，音量减10
SetVolume -= 10;
}
}
}
github：https://github.com/yuxianqiang/CoreAudioApi
实例：链接：https://pan.baidu.com/s/1qcIFVkwnI_bRRz2B3SXf7A 密码：as4q 感谢分享{:1_919:} 谢谢分享 好东西，谢谢分享。。。 好东西 ，感谢分享
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