Add-Type -TypeDefinition @'
using System;using System.Runtime.InteropServices;using System.Text;
public class W {
 [DllImport("user32.dll")] public static extern bool EnumWindows(EnumProc cb, IntPtr l);
 [DllImport("user32.dll")] public static extern int GetWindowText(IntPtr h, StringBuilder s, int n);
 [DllImport("user32.dll")] public static extern int GetWindowTextLength(IntPtr h);
 [DllImport("user32.dll")] public static extern bool IsWindowVisible(IntPtr h);
 [DllImport("user32.dll")] public static extern bool GetWindowRect(IntPtr h, out RECT r);
 public delegate bool EnumProc(IntPtr h, IntPtr l);
 [StructLayout(LayoutKind.Sequential)] public struct RECT { public int Left,Top,Right,Bottom; }
}
'@
$list = New-Object System.Collections.ArrayList
$cb = [W+EnumProc]{ param($h,$l)
  if ([W]::IsWindowVisible($h)) {
    $len = [W]::GetWindowTextLength($h)
    if ($len -gt 0) {
      $sb = New-Object System.Text.StringBuilder($len + 1)
      [W]::GetWindowText($h,$sb,$sb.Capacity) | Out-Null
      $r = New-Object W+RECT
      [W]::GetWindowRect($h,[ref]$r) | Out-Null
      [void]$list.Add(("{0}|{1}|{2},{3},{4},{5}" -f $h,$sb.ToString(),$r.Left,$r.Top,$r.Right,$r.Bottom))
    }
  }
  return $true
}
[W]::EnumWindows($cb,[IntPtr]::Zero) | Out-Null
$list | ForEach-Object { Write-Output $_ }