Building a dictation app for Windows sounds simple until you try to actually get text into other applications. After shipping dictate.app , I learned more about Windows text injection than I ever wanted to know. Here's the full picture. The Problem You've transcribed audio to text. Now you need to insert that text wherever the user's cursor is — Notepad, VS Code, Excel, a chat app, a browser field, or a terminal running as Administrator. Each app handles input differently. Some block you entirely. There is no single API that works everywhere. You need a layered approach. Method 1: SendInput (Win32) The most direct route. SendInput injects keyboard events at the OS level, simulating actual keypresses. // Electron / Node.js using ffi-napi to call Win32 const ffi = require ( " ffi-napi " ); const ref = require ( " ref-napi " ); const user32 = ffi .…