Skip to main content

Dropdown Menu

A composable popup menu with check items, radio items and submenus.

Loading preview…
Live C++Source and licences
#include <QApplication>
#include <QFile>
#include <QHBoxLayout>
#include <QLabel>
#include <QPainter>
#include <QStandardItemModel>
#include <QUrl>
#include <QVBoxLayout>
#include <array>
#ifdef SHADCN_GALLERY_MEDIA
#include <shadcn/media.hpp>
#endif
#include <shadcn/shadcn.hpp>

QWidget* example(QWidget* parent = nullptr) {
    using namespace shadcn;
    auto* canvas = new QWidget(parent);
    canvas->setAutoFillBackground(true);
    auto* outer = new QHBoxLayout(canvas);
    outer->setContentsMargins(32, 32, 32, 32);
    auto* host = new QWidget(canvas);
    auto* layout = new QVBoxLayout(host);
    layout->setContentsMargins(0, 0, 0, 0);
    layout->setSpacing(16);
    outer->addStretch();
    outer->addWidget(host, 0, Qt::AlignCenter);
    outer->addStretch();
    auto* button = new Button("Open menu", host);
    button->setVariant(Variant::Outline);
    auto* menu = new DropdownMenu(button);
    menu->addLabel("My account");
    menu->addSeparatorLine();
    menu->addItem("Profile");
    menu->addItem("Settings");
    menu->addCheckboxItem("Notifications", true);
    button->setMenu(menu);
    layout->addWidget(button);
    return canvas;
}

Installation​

add_subdirectory(shadcn-cpp)
target_link_libraries(app PRIVATE shadcn::widgets)

Usage​

#include <shadcn/navigation.hpp>

shadcn::DropdownMenu menu(parent);
menu.addItem("Open", [] { /* open */ });
menu.addCheckboxItem("Show details", true);
menu.addRadioItem("Compact", true);
menu.addLabel("View");

API​

addItem, addCheckboxItem, addRadioItem, addLabel, addSeparatorLine and addSubmenu create native menu entries.

Variations​

Use check items for independent settings and radio items for one choice within a group.

Keyboard and accessibility​

Qt supplies native focus, keyboard interaction and accessible object roles. Give the component a visible label or an accessible name when its text alone does not explain the action.

Ownership​

The parent widget owns the component. Child widgets created through a component layout follow Qt parent ownership. References returned by helper methods are borrowed.