C#实现基于加减按钮形式控制系统音量及静音的方法

这篇文章主要介绍了C#实现基于加减按钮形式控制系统音量及静音的方法,涉及C#引用user32.dll动态链接库操作系统音量的相关技巧,具有一定参考借鉴价值,需要的朋友可以参考下

本文实例讲述了C#实现基于加减按钮形式控制系统音量及静音的方法。分享给大家供大家参考。具体如下：

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									using System; 

									using System.Collections.Generic; 

									using System.ComponentModel; 

									using System.Data; 

									using System.Drawing; 

									using System.Text; 

									using System.Windows.Forms; 

									using System.Runtime.InteropServices; 

									namespace VolumnSet 

									{ 

									  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) 

									    { 

									      //加音量 

									      SendMessage(this.Handle, WM_APPCOMMAND, 0x30292, APPCOMMAND_VOLUME_UP * 0x10000); 

									    } 

									    private void button2_Click(object sender, EventArgs e) 

									    { 

									      //减音量 

									      SendMessage(this.Handle, WM_APPCOMMAND, 0x30292, APPCOMMAND_VOLUME_DOWN * 0x10000); 

									    } 

									    private void checkBox1_CheckedChanged(object sender, EventArgs e) 

									    { 

									      //静音 

									      SendMessage(this.Handle, WM_APPCOMMAND, 0x200eb0, APPCOMMAND_VOLUME_MUTE * 0x10000); 

									    } 

									  } 

									}