If you would rather use a .ico file, here is a KiXforms.Net example:

You will need to modify this line to reflect the correct path and filename:
 Code:
$NotifyIcon.Icon = $System.Icon.FromFile("Path\FileName.ico")


 Code:
Break On

Dim $SO
$SO=SetOption("NoMacrosInStrings", "ON")
$SO=SetOption("NoVarsInStrings", "ON")
$SO=SetOption("Explicit", "ON")

Global $System,$Form,$ContextMenu,$OpenMenu,$ExitMenu,$NotifyIcon,$FormRunning
Dim $Icon,$nul

;Create 'Kixforms.System' Object.
$System = CreateObject("Kixforms.System")

;Verify the 'Kixforms.System' Object was created if not, notify and exit.
If Not $System
	$nul= MessageBox("KiXforms.Net Not Initiated."+@CRLF+
	"Please verify KiXforms.Net is installed."+@CRLF+
	"This Script Will Now Close.","Error",16)
	Quit()
EndIf

$Form = $System.Form()
$Form.Closing = "ClosingForm()"
$Form.FormBorderStyle = $System.FormBorderStyle_FixedToolWindow
$Form.ShowInTaskbar = 0 ;False
$Form.StartPosition = $System.FormStartPosition_CenterScreen
$Form.Size = $System.Size(400,300) ;(Width,Height)
$Form.Text = "Notify Icon"

$ContextMenu = $System.ContextMenu()
$OpenMenu = $ContextMenu.MenuItems.Add($System.MenuItem("Open"))
$OpenMenu.Click = "OpenMenu_Click()"
$OpenMenu.Enabled = 0
$ExitMenu = $ContextMenu.MenuItems.Add($System.MenuItem("Exit"))
$ExitMenu.Click = "Exit_Form()"

$NotifyIcon = $System.NotifyIcon()
$NotifyIcon.ContextMenu = $ContextMenu
$NotifyIcon.DoubleClick = "OpenMenu_Click()"
$NotifyIcon.Icon = $System.Icon.FromFile("FullPath\IconFileName.ico")
$NotifyIcon.Visible = -1 ;True
$nul = $Form.Controls.Add($NotifyIcon)

$Form.Show  ;Displays the Form

$FormRunning = 1
While $FormRunning = 1
   $Nul = Execute($Form.DoEvents())
Loop
Exit 0

Function Exit_Form()
	$NotifyIcon.Visible = 0 ;False
	;$FormRunning = 0
	Quit()
EndFunction

Function ClosingForm()
	$Form.ClosingEventArgs.Cancel = -1 ;True
	OpenMenu_Click()
EndFunction

Function OpenMenu_Click()
	If $OpenMenu.Enabled = 0 ;False
		$Form.Hide
		$OpenMenu.Enabled = -1 ;True
	Else
		$Form.Show
		$OpenMenu.Enabled = 0 ;False
	EndIf
EndFunction
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