# tmux.DisplayPopupRequest.TargetClient

- **Module:** tmux.DisplayPopupRequest
- **Package:** github.com/libtmux/libtmux-go/tmux
- **Language:** Go
- **Kind:** attribute
- **Source:** https://github.com/libtmux/libtmux-go/blob/52968a3181c1c9e6d1b26c565d4b170968ae61c0/tmux/pane_popup.go#L51
- **Page:** https://libtmux.org/en/go/latest/reference/tmux-displaypopuprequest-targetclient/

TargetClient selects the client that receives the overlay; zero lets tmux choose. tmux 3.8 and later refuses to host a popup on a control-mode client, which cannot render an overlay, so an explicit control-mode TargetClient is rejected on those versions rather than left as the silent no-op tmux itself returns.