# LibTmux.Query.ClientAttachment.windowIndex

- **Package:** libtmux-haskell
- **Language:** Haskell
- **Kind:** function
- **Source:** https://github.com/libtmux/libtmux-haskell/blob/663e212622a02aa74a9bdc8ff71e2b45fcb1d4d5/src/LibTmux/Query/ClientAttachment.hs#L27
- **Page:** https://libtmux.org/en/haskell/latest/reference/libtmux-query-clientattachment-v-windowindex/

```haskell
windowIndex :: Field ClientAttachment WindowIndex
```

Signature types: [`Field`](/en/haskell/latest/reference/libtmux-query-t-field/), [`ClientAttachment`](/en/haskell/latest/reference/libtmux-snapshot-t-clientattachment/), [`WindowIndex`](/en/haskell/latest/reference/libtmux-value-t-windowindex/).

Selected link index in the client's session.

## Referenced declarations

- [`LibTmux.Snapshot.ClientAttachment`](/en/haskell/latest/reference/libtmux-snapshot-t-clientattachment/) (data type)
- [`LibTmux.Query.Field`](/en/haskell/latest/reference/libtmux-query-t-field/) (data type)
- [`LibTmux.Value.WindowIndex`](/en/haskell/latest/reference/libtmux-value-t-windowindex/) (data type)