New-TrayNotifyIcon.ps1

##Requires -Version 2.0

function New-TrayNotifyIcon
{
param(
    [parameter(Mandatory=$false, ValueFromPipelineByPropertyName=$true)]
    [Alias('Icon')]
    $IconPath = "$env:windir\system32\WindowsPowerShell\v1.0\powershell.exe",
    [parameter(Mandatory=$True, ValueFromPipelineByPropertyName=$true)]
    $Title,
    [parameter(Mandatory=$true, ValueFromPipelineByPropertyName=$true)]
    $Text,
    [parameter(Mandatory=$false, ValueFromPipelineByPropertyName=$true)]
    [ValidateSet('None','Info','Warning','Error')]
    $Level = 'Info',
    [parameter(Mandatory=$false, ValueFromPipelineByPropertyName=$true)]
    $Delay = 10,
    [parameter(Mandatory=$false, ValueFromPipelineByPropertyName=$true)]
    $Link 
)
BEGIN
{
    $NotifyIcon_BalloonTipText_maxLength = 255
    $NotifyIcon_BalloonTipTitle_maxLength = 63
    # This Requires -STA
    $IsSTA = [System.Threading.Thread]::CurrentThread.ApartmentState -eq "STA"
    if( !$IsSTA ) 
    { 
       Throw "Notification Icons cannot be displayed in MTA mode. (Must run PowerShell with -STA switch to enable)"
    } 
    #[reflection.assembly]::loadwithpartialname("System.Windows.Forms") | Write-Debug
    #[reflection.assembly]::loadwithpartialname("System.Drawing") | Write-Debug
    Reset-Tray
    $DEFAULT_ICON_PATH = "$env:windir\system32\WindowsPowerShell\v1.0\powershell.exe"
}
PROCESS
{
    $TipIcon = [system.windows.forms.tooltipicon]::$Level
    
    if ( !(test-path -path $iconPath -pathtype leaf) ) 
    {  
        Write-Error "File '$iconPath' not found."
        $iconpath = $DEFAULT_ICON_PATH 
    }
    try { $Icon = [System.Drawing.Icon]::ExtractAssociatedIcon($iconPath) }
    catch
    {
        try { $Icon = [System.Drawing.Icon]::ExtractAssociatedIcon($DEFAULT_ICON_PATH) }
        catch { throw "The notify icon must have an icon file." }            
    }
    
    $NotifyIcon = New-Object system.windows.forms.notifyicon
    $NotifyIcon.icon = $Icon
    # Clear any previous events 
    $NotifyIcon_BalloonTip_Clicked = "NotifyIcon.BallonTipClicked"
    $NotifyIcon_BalloonTip_Closed  = "NotifyIcon.BallonTipClosed"
    Remove-Event $NotifyIcon_BalloonTip_Clicked -ErrorAction SilentlyContinue 
    Remove-Event $NotifyIcon_BalloonTip_Closed -ErrorAction SilentlyContinue 
    # Register Events
    Register-ObjectEvent -InputObject $NotifyIcon -EventName BalloonTipClicked -SourceIdentifier $NotifyIcon_BalloonTip_Clicked
    Register-ObjectEvent -InputObject $NotifyIcon -EventName BalloonTipClosed -SourceIdentifier $NotifyIcon_BalloonTip_Closed
    
    try
    {
        $NotifyIcon.BalloonTipTitle = $Title   ; Write-Debug $( "Balloon Tip Title:`t {0}" -f $NotifyIcon.BalloonTipTitle )
        $NotifyIcon.BalloonTipText  = $Text    ; Write-Debug $( "Balloon Tip Text:`t {0}"  -f $NotifyIcon.BalloonTipText  )
        $NotifyIcon.BalloonTipIcon  = $TipIcon ; Write-Debug $( "Balloon Tip Level:`t {0}" -f $NotifyIcon.BalloonTipIcon )
        $NotifyIcon.visible         = $true    ; Write-Debug $( "Notification Icon:`t {0}" -f $NotifyIcon.visible )
        $NotifyIcon.showballoontip($delay)     ; Write-Debug $( "Balloon Tip Show:`t {0} seconds" -f $Delay )
        $StartTime = get-date
        
        :wait_event while ($True)
        {
            Write-Debug 'Wait for Event'
            $event = Wait-Event
            if ($event) { Write-Debug 'Event Raised' }
            switch ($event.SourceIdentifier)
            {
                $NotifyIcon_BalloonTip_Clicked {  Write-Debug "Balloon Tip Event:`t Clicked"
                    if ($link)
                    {
                        $NotifyIcon.visible = $false 
                        Start-Process $Link  ; Write-Debug "Balloon Tip Action:`t start-process $link"
                        start-sleep 10
                        
                    }
                    Break wait_event
                }
                $NotifyIcon_BalloonTip_Closed {   Write-Debug "Balloon Tip Event:`t Closed"
                    Start-Sleep 1
                    Write-Debug $( "Total Time Displayed:`t {0}" -f ((Get-Date) - $StartTime).TotalSeconds )
                    Return
                }
            }
        }
        
    }
    finally
    {
        Write-Debug "NotifyIcon: Cleanup"
        # Close Notify Icon
        $NotifyIcon.visible = $false 
        $NotifyIcon.Dispose()
        # Clear Events
        Remove-Event $NotifyIcon_BalloonTip_Clicked -ErrorAction SilentlyContinue
        Remove-Event $NotifyIcon_BalloonTip_Closed -ErrorAction SilentlyContinue
        Unregister-Event -SourceIdentifier $NotifyIcon_BalloonTip_Clicked -ErrorAction SilentlyContinue
        Unregister-Event -SourceIdentifier $NotifyIcon_BalloonTip_Closed -ErrorAction SilentlyContinue
        Reset-Tray
        Write-Output $_
    }
}
END
{

}

}