# config.WindowConfig.window_index

- **Module:** config.WindowConfig
- **Package:** libtmux
- **Language:** Rust
- **Kind:** attribute
- **Source:** https://github.com/libtmux/libtmux-rs/blob/8a648c0894dfffc9303583f753b6c8ae01f2fe76/crates/tmux-workspace/src/config.rs#L71
- **Page:** https://libtmux.org/reference/rs/config-windowconfig-window_index/

The window index to create at, or `None` for the first free one.