# listhelp -- Shared List / Dropdown Helpers

Shared rendering and hit-testing infrastructure used by the ListBox,
ListView, ComboBox, and Dropdown widgets.  Centralizes popup-list
painting, dropdown-arrow glyphs, and key-navigation helpers so the
widgets stay consistent and small.

## Documentation

Full reference is in `listhelp.dhs` (this directory), compiled into the
DVX System Reference.  Open via the Help Viewer app, or read
`docs/dvx_system_reference.html` after `make`.

Topics covered: dropdown arrow drawing, popup-list hit test and paint,
navigation keys (Up/Down/Home/End/PgUp/PgDn).

## Source Files

- `listHelp.h`   -- public API
- `listHelp.c`   -- implementation

## Build

`make -C src/libs/kpunch/listhelp` (invoked by the top-level `make`).
