A script for updating focus behavior on Windows

trackmouse.ps1

[CmdletBinding()]
param (
    [Parameter(Mandatory = $true)]
    [bool]
    $FollowMouse,
    [Parameter(Mandatory = $true)]
    [bool]
    $RaiseWindows,
    [Parameter(Mandatory = $true)]
    [uint]
    $TrackDelay
)

Add-Type -TypeDefinition @"
using System;
using System.ComponentModel;
using System.Runtime.InteropServices;
public static class Mouse {
    [DllImport("User32.dll", SetLastError=true)]
    public static extern bool SystemParametersInfo(uint action, uint iParam, UIntPtr pvParam, uint flags);

    public static void SetTrackMouse(bool enabled) {
        if (!SystemParametersInfo(0x1001, 0, new UIntPtr(enabled ? 1u : 0u), 0x2)) {
            throw new Win32Exception(Marshal.GetLastWin32Error());
        }
    }

    public static void SetRaiseWindows(bool enabled) {
        if (!SystemParametersInfo(0x100D, 0, new UIntPtr(enabled ? 1u : 0u), 0x2)) {
            throw new Win32Exception(Marshal.GetLastWin32Error());
        }
    }

    public static void SetTrackDelay(uint timeout) {
        if (!SystemParametersInfo(0x2003, 0, new UIntPtr(timeout), 0x2)) {
            throw new Win32Exception(Marshal.GetLastWin32Error());
        }
    }
}
"@

[Mouse]::SetTrackMouse($FollowMouse)
[Mouse]::SetRaiseWindows($RaiseWindows)
[Mouse]::SetTrackDelay($TrackDelay)