function showAbout($owner) {
    $form = New-Object System.Windows.Forms.Form
    $form.icon = $icon
    $form.Text = "Acerca de"
    $form.Width = 285
    $form.Height = 265
    $form.AutoSize = $true
    $form.MaximizeBox = $false
    $form.StartPosition = [System.Windows.Forms.FormStartPosition]::CenterParent
    $form.Font = "Microsoft Sans Serif, 9.35"
    $form.FormBorderStyle = 'FixedDialog'

    $hidden = New-Object System.Windows.Forms.Button
    $hidden.Width = 0
    $hidden.Height = 0
    $form.Controls.Add($hidden)

    $logo = new-object Windows.Forms.PictureBox
    $logo.SizeMode = [System.Windows.Forms.PictureBoxSizeMode]::StretchImage
    $logo.Location = New-Object System.Drawing.Point(30, 20)
    $logo.Width = 32
    $logo.Height = 32
    $logo.Image = $icon
    $form.controls.add($logo)

    $label_name = New-Object System.Windows.Forms.Label
    $label_name.Text = $app_name
    $label_name.AutoSize = $true
    $label_name.Location = New-Object System.Drawing.Point(70, 30)
    $label_name.Font = [System.Drawing.Font]::new("Consolas", 13)
    $form.controls.add($label_name)

    $label_version = New-Object System.Windows.Forms.Label
    $label_version.Text = "Versión: $($metadata.version)"
    $label_version.AutoSize = $true
    $label_version.Location = New-Object System.Drawing.Point(40, 70)
    $label_version.Font = [System.Drawing.Font]::new("Consolas", 10)
    $form.controls.add($label_version)

    $label_date = New-Object System.Windows.Forms.Label
    $label_date.Text = "Fecha: $([datetime]::FromFileTime($metadata.date).ToString("yyyy-MM-dd HH:mm"))"
    $label_date.AutoSize = $true
    $label_date.Location = New-Object System.Drawing.Point(40, 95)
    $label_date.Font = [System.Drawing.Font]::new("Consolas", 10)
    $form.controls.add($label_date)


    $label_copy = New-Object System.Windows.Forms.Label
    $label_copy.Text = "Autor: $($metadata.author) © $([datetime]::FromFileTime($metadata.date).ToString("yyyy"))"
    $label_copy.AutoSize = $true
    $label_copy.Location = New-Object System.Drawing.Point(40, 120)
    $label_copy.Font = [System.Drawing.Font]::new("Consolas", 10)
    $form.controls.add($label_copy)

    
    $label_site = New-Object System.Windows.Forms.Label
    $label_site.Text = "Web:"
    $label_site.AutoSize = $true
    $label_site.Location = New-Object System.Drawing.Point(40, 145)
    $label_site.Font = [System.Drawing.Font]::new("Consolas", 10)
    $form.controls.add($label_site)


    $label_link = New-Object System.Windows.Forms.LinkLabel
    $label_link.Location = New-Object System.Drawing.Size(75, 145)
    $label_link.AutoSize = $true
    $label_link.LinkColor = "BLUE"
    $label_link.ActiveLinkColor = "RED"
    $label_link.Text = ($metadata.website -split "/")[2]
    $label_link.add_Click({[system.Diagnostics.Process]::start("$($metadata.website)")})
    $label_link.Font = [System.Drawing.Font]::new("Consolas", 10)
    $form.Controls.Add($label_link)


    $btn_examine = New-Object System.Windows.Forms.Button
    $btn_examine.Text = "Examinar"
    $btn_examine.Location = New-Object System.Drawing.Point(32, 180)
    $btn_examine.Width = 97
    $btn_examine.Height = 30
    $btn_examine.Font = [System.Drawing.Font]::new("Consolas", 10)
    $btn_examine.Add_Click({
            Invoke-Item $root
        })
    $form.Controls.Add($btn_examine)


    $btn_update = New-Object System.Windows.Forms.Button
    $btn_update.Text = "Actualizar"
    $btn_update.Location = New-Object System.Drawing.Point(142, 180)
    $btn_update.Width = 97
    $btn_update.Height = 30
    $btn_update.Font = [System.Drawing.Font]::new("Consolas", 10)
    $btn_update.Add_Click({
            Start-Process powershell -argument "$launcher -upd 1 -variant $($metadata.variant)"
            Stop-Process -Id $PID
        })
    $form.Controls.Add($btn_update)




    $form.Add_Closing({
            $form.Hide()
        })
    
    [PSAppID]::SetAppIdForWindow($form.handle, "$($metadata.package).$app_name")

    $form.Add_LocationChanged({ $global:win_loc = $form.Location })
    $form.Add_Resize({          $global:win_size = $form.Size })

    $form.ShowDialog()
}