Get new windows of a certain type

Hi,

I'm trying to do something similar to Autohotkey's IfwinExist, which means I'm trying to run an action whenever a window of a certain type is opened.

I don't really know how to go about it.

I tried creating an array that contains all open windows of the type I want, then waiting one second, then creating a second array with the same, then comparing the arrays.

It doesn't seem to work great.

Here's what I did:

Function check-newincs(){
#get all inc windows
$newwin1 = @((Select-Window -Title "INC* - Windows Internet *") | ? {$_.Processname -eq "iexplore"})
#count windows
$count = $newwin.Count
sleep  5
#get them again
$newwin = @((Select-Window -Title "INC* - Windows Internet *") | ? {$_.Processname -eq "iexplore"})
#if count gets bigger, then
if ((Arearraysequal $newwin $newwin1) -eq $false){
$a = (Compare-Object $newwin $newwin1)
Set-Variable newinc ($a.InputObject) -Scope global
activate-inc 
}
sleep 1
}
Function do-checknewincs() {
While ($true) {
check-newincs
}
}

arearraysequal contains a function I found on internet, but I don't understand all subtleties of it because it isn't commented.

For example I do not know what ".rank" is, or what ".getEnumerator()" does. That I can obviuosly find on internet.

I will post arearraysequal here if you are interested:

function AreArraysEqual($a1, $a2) {
    if ($a1 -isnot [array] -or $a2 -isnot [array]) { 
      throw "Both inputs must be an array"
    }
    if ($a1.Rank -ne $a2.Rank) { 
      return $false 
    }
    if ([System.Object]::ReferenceEquals($a1, $a2)) {
      return $true
    }
    for ($r = 0; $r -lt $a1.Rank; $r++) {
      if ($a1.GetLength($r) -ne $a2.GetLength($r)) {
            return $false
      }
    }
    $enum1 = $a1.GetEnumerator()
    $enum2 = $a2.GetEnumerator()    
    while ($enum1.MoveNext() -and $enum2.MoveNext()) {
      if ($enum1.Current -ne $enum2.Current) {
            return $false
      }
    }
    return $true
}

Activate-inc just displays a message box with the title of the new window for now.

I use select-window from WASP, but I coul dalso have used the com object Shell.application and enumerated windows.

Thanks for any help on how to do this.

Clovis