notcurses/doc/man/man3/notcurses_selector.3.md

% notcurses_selector(3)
% nick black <nickblack@linux.com>
% v1.6.19

# NAME

notcurses_selector - high level widget for selecting from a set

# SYNOPSIS

**#include <notcurses/notcurses.h>**

```c
struct ncinput;
struct ncplane;
struct notcurses;
struct ncselector;

struct ncselector_item {
  char* option;
  char* desc;
};

typedef struct ncselector_options {
  char* title; // title may be NULL, inhibiting riser
  char* secondary; // secondary may be NULL
  char* footer; // footer may be NULL
  struct ncselector_item* items; // initial items and descriptions
  // default item (selected at start)
  unsigned defidx;
  // maximum number of options to display at once
  unsigned maxdisplay;
  // exhaustive styling options
  uint64_t opchannels;   // option channels
  uint64_t descchannels; // description channels
  uint64_t titlechannels;// title channels
  uint64_t footchannels; // secondary and footer channels
  uint64_t boxchannels;  // border channels
  uint64_t bgchannels;   // background channels for body
  unsigned flags;        // bitfield over NCSELECTOR_OPTION_*
} ncselector_options;
```

**struct ncselector* ncselector_create(struct ncplane* n, int y, int x, const ncselector_options* opts);**

**int ncselector_additem(struct ncselector* n, const struct ncselector_item* item);**

**int ncselector_delitem(struct ncselector* n, const char* item);**

**const char* ncselector_selected(const struct ncselector* n);**

**struct ncplane* ncselector_plane(struct ncselector* n);**

**const char* ncselector_previtem(struct ncselector* n);**

**const char* ncselector_nextitem(struct ncselector* n);**

**bool ncselector_offer_input(struct ncselector* n, const struct ncinput* nc);**

**void ncselector_destroy(struct ncselector* n, char\*\* item);**

# DESCRIPTION

# NOTES

Currently, the **ncplane** **n** provided to **ncselector_create** must not be
**NULL**, though the **ncselector** will always get its own plane, and this
plane will not (currently) be bound to **n**. **ncselector_selected**
returns the currently-selected option. **ncselector_additem** and
**ncselector_delitem** allow items to be added and deleted on the fly
(a static set of items can all be provided in the **ncselector_create**
call).

**ncselector_plane** will return the **ncplane** on which the widget is
drawn.

While the **ncselector** can be driven entirely by client code, input can
be run through **ncselector_offer_input** to take advantage of common
controls. It will handle the up and down arrows, along with PageUp and
PageDown. If the mouse is enabled, the mouse scrollwheel and mouse clicks
on the scroll arrows will be handled.

# RETURN VALUES

# SEE ALSO

**notcurses(3)**,
**notcurses_input(3)**,
**notcurses_multiselector(3)**
**notcurses_plane(3)**