$MemDef = @"
[DllImport("winmm.dll", CharSet = CharSet.Ansi)]
   public static extern int mciSendStringA(
   string lpstrCommand,
   string lpstrReturnString,
   int uReturnLength,
   IntPtr hwndCallback);
"@

$winnm = Add-Type -memberDefinition $MemDef -ErrorAction 'SilentlyContinue' -passthru -name mciSendString
function Set-CDAudioDoor {
 Param(
  [ValidateSet("open", "closed")][String[]]$Mode = 'open'
 )
 $winnm::mciSendStringA("set cdaudio door $mode", $null, 0,0)}

 [void][reflection.assembly]::loadwithpartialname("System.Windows.Forms")
[void][reflection.assembly]::loadwithpartialname("System.Drawing")


$Form = New-Object system.Windows.Forms.Form 
$Form.Text = "PowerShell 2017"
$Form.TopMost = $true
$Form.Width = 300
$Form.Height = 300
$Form.StartPosition = "CenterScreen"



$button_Abrir = New-Object system.windows.Forms.Button 
$button_Abrir.Text = "Abrir"
$button_Abrir.Width = 75
$button_Abrir.Height = 23
$button_Abrir.location = new-object system.drawing.point(40, 150)
$button_Abrir.Font = "Microsoft Sans Serif,10"
$Form.controls.Add($button_Abrir) 


$button_Cerrar = New-Object system.windows.Forms.Button 
$button_Cerrar.Text = "Cerrar"
$button_Cerrar.Width = 75
$button_Cerrar.Height = 23
$button_Cerrar.location = new-object system.drawing.point(174, 150)
$button_Cerrar.Font = "Microsoft Sans Serif,10"
$Form.controls.Add($button_Cerrar) 




$label_Mensaje = New-Object system.windows.Forms.Label 
$label_Mensaje.Text = "?"
$label_Mensaje.AutoSize = $true
$label_Mensaje.Width = 25
$label_Mensaje.Height = 10
$label_Mensaje.location = new-object system.drawing.point(54,26)
$label_Mensaje.Font = "Microsoft Sans Serif,36,style=Bold"
$Form.controls.Add($label_Mensaje)

# Abrir  bandeja.
$label_Mensaje.Text = "Abriendo..."
$button_Abrir.Add_Click({Set-CDAudioDoor open})
$label_Mensaje.Text = "Abierto."

# Cerrar bandeja.
$label_Mensaje.Text = "Cerrando..."
$button_Cerrar.Add_Click({Set-CDAudioDoor closed})
$label_Mensaje.Text = "Cerrado."

[void]$Form.ShowDialog() 
$Form.Dispose()  

$label_Mensaje.Text = "Cerrado."