GtkHeaderBar

Preview

CSS Node Tree

headerbar
  └── windowhandle
      └── box (CenterLayout)
          ├── box.start
          ├── <title widget>
          └── box.end

Props

Behavior

• Window control buttons (close, minimize, maximize) are rendered based on the decorationLayout string.
• The decorationLayout format uses colon to separate start from end buttons: "appmenu:minimize,maximize,close". Without a colon, both sides show the buttons. Only minimize, maximize and close make buttons.
• The buttons and the title bar act on the enclosing GtkWindow (onClose, onMinimize, onMaximize, onDrag), unless the header bar sets its own onWindow* handlers.
• Without a title widget, the header bar shows the window's title.

GTK4 Documentation →