Code Editor (IDE)

Workspace includes a full code editor powered by Monaco — the same engine as VS Code.

How to open

  • Click a file in the file tree.
  • From the project search (Ctrl+Shift+F): clicking a match opens the file at that line.
  • From the build log: clicking an error opens the file at the error line.
  • Go to Definition from code — the target opens in the editor.

Editor window

The editor opens in a large window on top of Workspace: the file path, the «● Unsaved changes» indicator, Save and Close (Esc) buttons.

Features

  • Syntax highlighting: C++ (.h/.hpp/.c/.cpp/.inl…), C#, JSON (.uproject/.uplugin), INI (.ini/.cfg), Markdown, XML/HTML, YAML.
  • Autocompletion based on the symbol index of the whole project — works offline, no clangd/LSP required.
  • Go to Definition for C++ and C# — jump to a function/class declaration in another project file.
  • Build markers — errors and warnings from the latest UBT log are highlighted right in the code.
  • Minimap and line numbers.
  • Word wrap toggle button.

Hotkeys

  • Ctrl+S — save the file.
  • Tab — indentation.
  • Esc — close the editor (unless a Monaco widget like find/suggest is open).
  • Closing with unsaved changes asks: «Save and close» or «Close without saving».
If Monaco fails to load (e.g. a broken installation), the editor automatically falls back to a simplified version with the same buttons.
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