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Popovers Deep Dive

Normally Views cannot draw outside of their Viewport. Options for influencing content outside of the Viewport include:

  1. Modifying the Border behavior
  2. Modifying the Margin behavior
  3. Using Popover

Popovers are useful for scenarios such as menus, autocomplete popups, and drop-down combo boxes.

A Popover is any View that meets these characteristics:

  • Implements the IPopover interface
  • Is Focusable (CetFocus = true)
  • Is Transparent (ViewportSettings = ViewportSettings.Transparent | ViewportSettings.TransparentMouse
  • Sets Visible = false when it receives Application.QuitKey

PopoverMenu provides a sophisticated implementation that can be used as a context menu and is the basis for @Terminal.Gui.MenuBarv2.

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