# MathPoint を Windows の PowerPoint と Word に入れる。使い方: irm https://mcp.tex64.com/mathpoint/install.ps1 | iex
$ErrorActionPreference = 'Stop'
$dir = Join-Path $env:LOCALAPPDATA 'MathPoint'
New-Item -ItemType Directory -Force -Path $dir | Out-Null
$manifest = Join-Path $dir 'manifest.xml'
Invoke-WebRequest -UseBasicParsing -Uri 'https://mcp.tex64.com/mathpoint/addin/manifest.prod.xml' -OutFile $manifest
$key = 'HKCU:\Software\Microsoft\Office\16.0\WEF\Developer'
if (-not (Test-Path $key)) { New-Item -Path $key -Force | Out-Null }
New-ItemProperty -Path $key -Name $manifest -Value $manifest -PropertyType String -Force | Out-Null
Write-Host 'MathPoint を入れました。PowerPoint / Word を開き直し、ホーム → アドイン → MathPoint を開いてください。'
Write-Host 'Installed. Reopen PowerPoint or Word, then open Home > Add-ins > MathPoint.'