fn_registry/cpp/functions/core/button.md

name, kind, lang, domain, version, purity, signature, description, tags, uses_functions, uses_types, returns, returns_optional, error_type, imports, tested, tests, test_file_path, file_path, framework, params, output

name	kind	lang	domain	version	purity	signature	description	tags	uses_functions	uses_types	returns	returns_optional	error_type	imports	tested	tests	test_file_path	file_path	framework	params	output
button	component	cpp	core	1.0.0	pure	bool fn_ui::button(const char* label, fn_ui::ButtonVariant variant = Secondary, fn_ui::ButtonSize size = Md)	Boton ImGui con variantes (primary/secondary/subtle/danger) y tamanos (sm/md/lg) usando fn_tokens. Replica Mantine Button / fn_library Button.	imgui button ui form tokens	tokens_cpp_core			false		imgui	true	compiles and links against Catch2 (placeholder, visual cubierto en 0048)	cpp/tests/test_button.cpp	cpp/functions/core/button.cpp	imgui	name desc label Texto visible del boton (tambien se usa como id ImGui; prefijar con ## para solo-id) name desc variant ButtonVariant: Primary (indigo), Secondary (surface+border, default), Subtle (transparente), Danger (rojo) name desc size ButtonSize: Sm (compacto), Md (default), Lg (grande, font x1.1)	true el frame en que se hace click, false en caso contrario

button

Boton con variantes semanticas y tamanos fijos. Usa tokens (primary, surface, error, border, text) y padding/radius consistentes — mismo estilo visual en cualquier app C++ que lo use.

Variantes

Variant	Uso	Colores
Primary	Accion principal (Save, Submit)	colors::primary + hover
Secondary	Accion neutra (Cancel)	surface + border
Subtle	Accion discreta (ver mas)	transparente + hover surface
Danger	Accion destructiva (Delete)	colors::error

Ejemplo

#include "core/button.h"
using fn_ui::button;
using V = fn_ui::ButtonVariant;

if (button("Reindex", V::Primary)) { ... }
if (button("Cancel",  V::Subtle))  { ... }
if (button("Delete",  V::Danger))  { ... }

Notas

• No gestiona layout: usar ImGui::SameLine() o toolbar para alinear varios.
• Para botones solo-icono sin texto, usar icon_button.