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C# implements the method of controlling the volume and mute system based on the addition and subtraction buttons

C# implements the method of controlling the volume and mute system based on the addition and subtraction buttons

Updated: October 9, 2015 12:26:09 Author: Little Editor
This article mainly introduces C# to control the volume and mute system based on the addition and subtraction button form, and involves the relevant skills of C# to reference the operating system volume of the dynamic link library. It has certain reference value. Friends who need it can refer to it.

This article describes the method of C# to control the volume and mute system based on the addition and subtraction button form. Share it for your reference. The details are as follows:

using System; 
using ; 
using ; 
using ; 
using ; 
using ; 
using ; 
using ; 
namespace VolumnSet 
{ 
  public partial class Form1 : Form 
  { 
    [DllImport("", CharSet = , 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) 
    { 
      //Add volume      SendMessage(, WM_APPCOMMAND, 0x30292, APPCOMMAND_VOLUME_UP * 0x10000); 
    } 
    private void button2_Click(object sender, EventArgs e) 
    { 
      //Reduce the volume      SendMessage(, WM_APPCOMMAND, 0x30292, APPCOMMAND_VOLUME_DOWN * 0x10000); 
    } 
    private void checkBox1_CheckedChanged(object sender, EventArgs e) 
    { 
      //Mute      SendMessage(, WM_APPCOMMAND, 0x200eb0, APPCOMMAND_VOLUME_MUTE * 0x10000); 
    } 
  } 
}

I hope this article will be helpful to everyone's C# programming.

  • C#
  • volume

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