# LibTmux.Id.WindowId

- **Package:** libtmux-haskell
- **Language:** Haskell
- **Kind:** data type
- **Source:** https://github.com/libtmux/libtmux-haskell/blob/581f0ee45016ffb2283366bb1edc1658df26c5ed/src/LibTmux/Id.hs#L51
- **Page:** https://libtmux.org/en/haskell/latest/reference/libtmux-id-t-windowid/

```haskell
data WindowId
```

A physical window's identifier, independent of its session links.
 Parse with [`parseWindowId`](/en/haskell/latest/reference/libtmux-id-v-parsewindowid/); render with [`renderWindowId`](/en/haskell/latest/reference/libtmux-id-v-renderwindowid/).

## Instances

- instance [NFData](https://hackage.haskell.org/package/deepseq-1.5.1.0/docs/Control-DeepSeq.html#t:NFData) [`WindowId`](/en/haskell/latest/reference/libtmux-id-t-windowid/) ([Source](https://github.com/libtmux/libtmux-haskell/blob/581f0ee45016ffb2283366bb1edc1658df26c5ed/src/LibTmux/Id.hs#L53))

- instance [Eq](https://hackage.haskell.org/package/base-4.22.0.0/docs/Data-Eq.html#t:Eq) [`WindowId`](/en/haskell/latest/reference/libtmux-id-t-windowid/) ([Source](https://github.com/libtmux/libtmux-haskell/blob/581f0ee45016ffb2283366bb1edc1658df26c5ed/src/LibTmux/Id.hs#L52))

- instance [Ord](https://hackage.haskell.org/package/base-4.22.0.0/docs/Data-Ord.html#t:Ord) [`WindowId`](/en/haskell/latest/reference/libtmux-id-t-windowid/) ([Source](https://github.com/libtmux/libtmux-haskell/blob/581f0ee45016ffb2283366bb1edc1658df26c5ed/src/LibTmux/Id.hs#L52))

- instance [Show](https://hackage.haskell.org/package/base-4.22.0.0/docs/Prelude.html#t:Show) [`WindowId`](/en/haskell/latest/reference/libtmux-id-t-windowid/) ([Source](https://github.com/libtmux/libtmux-haskell/blob/581f0ee45016ffb2283366bb1edc1658df26c5ed/src/LibTmux/Id.hs#L52))

## Referenced declarations

- [`LibTmux.Id.WindowId`](/en/haskell/latest/reference/libtmux-id-t-windowid/) (data type)