Show NSPopover from NSToolbarItem Button

Question

I want to show an NSPopover from an NSToolbarItem button in my toolbar.
(i.e. positioned below the button).

Ideally, I want to pass the

Answer 1

Instead of getting the view from the IBAction sender, connect an IBOutlet directly to the toolbar item and use that to get the relative view:

In your header file:

@property (weak) IBOutlet NSToolbarItem *theToolbarItem;
@property (weak) IBOutlet NSPopover *thePopover;

In your implementation file, to show the popover:

[self.thePopover showRelativeToRect:[[self.theToolbarItem view] bounds] ofView:[self.theToolbarItem view] preferredEdge:NSMinYEdge];

This will also work for showing popups from menu item selections inside a toolbar item.