C# 按钮控制windows音量

来源：互联网发布：程序员工作总结优缺点编辑：程序博客网时间：2024/04/30 07:56

一个项目中要用到的一个功能，但是这种方法仅限于直接增加和减小音量。最理想化的控制条来控制音量还需要调研。

经过测试，这种方法在win7下也能正常使用

如图

代码如下

控制系统音量using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using System.Runtime.InteropServices;//dll引用要用到的namespace WindowsFormsApplication2{    public partial class Form1 : Form    {        [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)        {//增加音量            SendMessage(this.Handle, WM_APPCOMMAND, 0x30292, APPCOMMAND_VOLUME_UP * 0x10000);        }        private void button2_Click(object sender, EventArgs e)        {//减少音量            SendMessage(this.Handle, WM_APPCOMMAND, 0x30292, APPCOMMAND_VOLUME_DOWN * 0x10000);        }        private void button3_Click(object sender, EventArgs e)        {//静音切换            SendMessage(this.Handle, WM_APPCOMMAND, 0x200eb0, APPCOMMAND_VOLUME_MUTE * 0x10000);        }        private void button1_MouseDown(object sender, MouseEventArgs e)        {                    }    }}