The GtkMenuButton widget is used to display a popup when clicked.

This popup can be provided either as a GtkPopover or as an abstract GMenuModel.

The GtkMenuButton widget can show either an icon (set with the GtkMenuButton:icon-name property) or a label (set with the GtkMenuButton:label property). If neither is explicitly set, a GtkImage is automatically created, using an arrow image oriented according to GtkMenuButton:direction or the generic “open-menu-symbolic” icon if the direction is not set.

The positioning of the popup is determined by the GtkMenuButton:direction property of the menu button.

For menus, the GtkWidget:halign and GtkWidget:valign properties of the menu are also taken into account. For example, when the direction is GTK_ARROW_DOWN and the horizontal alignment is GTK_ALIGN_START, the menu will be positioned below the button, with the starting edge (depending on the text direction) of the menu aligned with the starting edge of the button. If there is not enough space below the button, the menu is popped up above the button instead. If the alignment would move part of the menu offscreen, it is “pushed in”.

	start	center	end
down
up
left
right

CSS nodes

menubutton
╰── button.toggle
    ╰── <content>
         ╰── [arrow]

GtkMenuButton has a single CSS node with name menubutton which contains a button node with a .toggle style class.

If the button contains an icon, it will have the .image-button style class, if it contains text, it will have .text-button style class. If an arrow is visible in addition to an icon, text or a custom child, it will also have .arrow-button style class.

Inside the toggle button content, there is an arrow node for the indicator, which will carry one of the .none, .up, .down, .left or .right style classes to indicate the direction that the menu will appear in. The CSS is expected to provide a suitable image for each of these cases using the -gtk-icon-source property.

Optionally, the menubutton node can carry the .circular style class to request a round appearance.

Accessibility

GtkMenuButton uses the GTK_ACCESSIBLE_ROLE_BUTTON role.