我要评论本文实例讲述了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：
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);
}
}
}
希望本文所述对大家的c#程序设计有所帮助。
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