【无标题】

分享一个刻印枚举audio设备的函数：

# 导入mixer.dll
Add-Type -TypeDefinition @"
using System;
using System.Runtime.InteropServices;
using System.Text;

public class AudioDevicesEnumerator
{
    [DllImport("winmm.dll", CharSet = CharSet.Auto)]
    public static extern int mixerGetNumDevs();

    [DllImport("winmm.dll", CharSet = CharSet.Auto)]
    public static extern int mixerGetDevCaps(int uMxId, ref MIXERCAPS mixerCaps, int cbMixerCaps);

    [DllImport("winmm.dll", CharSet = CharSet.Auto)]
    public static extern int mixerOpen(out IntPtr phmx, int uMxId, IntPtr dwCallback, IntPtr dwInstance, int fdwOpen);

    [DllImport("winmm.dll", CharSet = CharSet.Auto)]
    public static extern int mixerClose(IntPtr hmx);

    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
    public struct MIXERCAPS
    {
        public ushort wMid;
        public ushort wPid;
        public uint vDriverVersion;
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
        public string szPname;
        public uint fdwSupport;
        public uint cDestinations;
    }

}

"@
function audio-enumdevs(){
$deviceCount = [AudioDevicesEnumerator]::mixerGetNumDevs();
        for ($i = 0; $i -lt $deviceCount; $i++)
        {
            $mixerCaps = New-Object AudioDevicesEnumerator+MIXERCAPS
            $result = [AudioDevicesEnumerator]::mixerGetDevCaps($i, [ref] $mixerCaps, [System.Runtime.InteropServices.Marshal]::SizeOf($mixerCaps));
            $mixerCaps.szPname
        }
        }
        audio-enumdevs