vbscript - How to I control my computer master volume by batch file -

i have batch code can turn pc volume wont turn down volume here code please possible:

@if (@a==@b) @end /*  :: batch portion  @echo off  cscript /e:jscript "%~f0"     :: jscript portion */  var shl = new activexobject("wscript.shell"); (var i=0; i<5; i++) {     shl.sendkeys(string.fromcharcode(0xaf)); } 

this code enable turn pc volume how turn down pc volume me

these tested , work here - keycodes in microsoft link in comment below.

volume control up.bat

@if (@a==@b) @end /*  :: batch portion  @echo off  cscript /e:jscript "%~f0"   :: jscript portion */  var shl = new activexobject("wscript.shell"); (var i=0; i<5; i++) {     shl.sendkeys(string.fromcharcode(0xaf)); } 

volume control down.bat

@if (@a==@b) @end /*  :: batch portion  @echo off  cscript /e:jscript "%~f0"   :: jscript portion */  var shl = new activexobject("wscript.shell"); (var i=0; i<5; i++) {     shl.sendkeys(string.fromcharcode(0xae)); } 

original answer follows:

according comment kul-tigin below, correct code should ae

shl.sendkeys(string.fromcharcode(0xaf)); 

you can use utility show keycodes when press , down volume buttons, assuming find utility returns keycode them.

the utility have show af hex or 175 decimal up volume key, , should show correct number down volume key.