Create NSPopUpButton Programmatically

Question

How can I create an NSPopUpButton programmatically and attach the menu items to it? This is what I have so far but it is not click able nor does it have any menu items attached

help window is just the name of my NSWindow

NSPopUpButton *button = [[NSPopUpButton alloc] initWithFrame:NSMakeRect(10, 0, 50, 50)];
[[helpWindow contentView] addSubview:button];
[button setNeedsDisplay:YES]; 

Answer 1

You can also create an NSMenuItem then add it to the NSPopUpButton's menu:

NSMenuItem *menuItem = [[NSMenuItem alloc] initWithTitle:@"menu" action:NULL keyEquivalent:@""];

[[popUpButton menu] addItem:menuItem];

Answer 2

Use the designated initializer initWithFrame:pullsDown:, and then use addItemWithTitle: or addItemsWithTitles: to add the menu items