# screen_write_box_border_set

- **Language:** C
- **Kind:** function
- **Source:** https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/screen-write.c#L673
- **Page:** https://libtmux.org/en/tmux/3.7c/reference/c-function-screen-write-c-screen_write_box_border_set/

```c
static void screen_write_box_border_set(enum box_lines lines, int cell_type, struct grid_cell *gc)
```

## Parameters

- `lines` (`enum box_lines`)
- `cell_type` (`int`)
- `gc` (`struct grid_cell *`)

## Calls

- [`utf8_copy`](/en/tmux/3.7c/reference/c-function-utf8_copy/) (function) [Call site](https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/screen-write.c#L681)

## Other function references

- [`tty_acs_double_borders`](/en/tmux/3.7c/reference/c-function-tty_acs_double_borders/) (function)
- [`tty_acs_heavy_borders`](/en/tmux/3.7c/reference/c-function-tty_acs_heavy_borders/) (function)
- [`tty_acs_rounded_borders`](/en/tmux/3.7c/reference/c-function-tty_acs_rounded_borders/) (function)
- [`utf8_set`](/en/tmux/3.7c/reference/c-function-utf8_set/) (function)

## Referenced by

- [`screen_write_box`](/en/tmux/3.7c/reference/c-function-screen_write_box/) (function)
- [`screen_write_hline`](/en/tmux/3.7c/reference/c-function-screen_write_hline/) (function)

## Referenced declarations

- [`grid_cell.attr`](/en/tmux/3.7c/reference/c-struct-grid_cell-attr/) (attribute)
- [`box_lines`](/en/tmux/3.7c/reference/c-enum-box_lines/) (enum)
- [`BOX_LINES_DEFAULT`](/en/tmux/3.7c/reference/c-enum-box_lines-box_lines_default/) (constant)
- [`BOX_LINES_DOUBLE`](/en/tmux/3.7c/reference/c-enum-box_lines-box_lines_double/) (constant)
- [`BOX_LINES_HEAVY`](/en/tmux/3.7c/reference/c-enum-box_lines-box_lines_heavy/) (constant)
- [`BOX_LINES_NONE`](/en/tmux/3.7c/reference/c-enum-box_lines-box_lines_none/) (constant)
- [`BOX_LINES_PADDED`](/en/tmux/3.7c/reference/c-enum-box_lines-box_lines_padded/) (constant)
- [`BOX_LINES_ROUNDED`](/en/tmux/3.7c/reference/c-enum-box_lines-box_lines_rounded/) (constant)
- [`BOX_LINES_SIMPLE`](/en/tmux/3.7c/reference/c-enum-box_lines-box_lines_simple/) (constant)
- [`BOX_LINES_SINGLE`](/en/tmux/3.7c/reference/c-enum-box_lines-box_lines_single/) (constant)
- [`CELL_BORDERS`](/en/tmux/3.7c/reference/c-define-tmux-h-cell_borders/) (constant)
- [`grid_cell.data`](/en/tmux/3.7c/reference/c-struct-grid_cell-data/) (attribute)
- [`GRID_ATTR_CHARSET`](/en/tmux/3.7c/reference/c-define-tmux-h-grid_attr_charset/) (constant)
- [`grid_cell`](/en/tmux/3.7c/reference/c-struct-grid_cell/) (struct)
- [`PADDED_BORDERS`](/en/tmux/3.7c/reference/c-define-tmux-h-padded_borders/) (constant)
- [`SIMPLE_BORDERS`](/en/tmux/3.7c/reference/c-define-tmux-h-simple_borders/) (constant)