# CLIENT_WINDOWSIZECHANGED

- **Language:** C
- **Kind:** constant
- **Source:** https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/tmux.h#L2123
- **Page:** https://libtmux.org/en/tmux/latest/reference/c-define-tmux-h-client_windowsizechanged/

```c
#define CLIENT_WINDOWSIZECHANGED 0x400000000ULL
```

## Referenced by

- [`clients_calculate_size`](/en/tmux/latest/reference/c-function-resize-c-clients_calculate_size/) (function)
- [`cmd_refresh_client_control_client_size`](/en/tmux/latest/reference/c-function-cmd-refresh-client-c-cmd_refresh_client_control_client_size/) (function)
- [`ignore_client_size`](/en/tmux/latest/reference/c-function-resize-c-ignore_client_size/) (function)