Display windows present in different storyboards - swift

Question

I'm using Xcode 8 and storyboards for mac development.
I have 2 storyboards with NSWindowController in each of them.
1). How can I display both windows when the app is launched?
2). How can I display window on pressing button on other window?
Edit:
Code:
func applicationDidFinishLaunching(_ aNotification: Notification)
{
let st = NSStoryboard(name: "Logs", bundle: nil) // Logs is my storyboard name
var logWindow: NSWindowController? = nil
logWindow = st.instantiateInitialController() as! NSWindowController?
if logWindow?.window?.isVisible == false
{
logWindow?.window?.setIsVisible(true)
}
}

Answer 1

Everything is correct but the problem is with logWindow.
I assume, you know that the local variable is dead after the execution of method.
As you can see logWindow is a local variable. When applicationDidFinishLaunching(_ aNotification: Notification) is executing, the variable is alive, a new window is created and also displayed.
When applicationDidFinishLaunching(_ aNotification: Notification) is finished executing, your variable logWindow is not alive. So, the allocated memory is de-allocated automatically (by ARC) and the window is destroyed/de-allocated.
All this is happening so fast and it is the reason you are not seeing the window inspite of isVisible() returning true(it returns true because the method is still in execution and logWindow is still alive).
So just make logWindow a variable of class(in what ever class you are trying to display the window) and you are good to go.

Answer 2

Both questions boil down to pretty much the same thing: How can I display a window from a storyboard? Whether you want to do it when the app is launched or when the user clicks a button shouldn't really affect what you need to do to display the window.
Take a look at the NSStoryboard class and you'll find methods for instantiating a window controller from a storyboard. So, create an instance of NSStoryboard if you don't already have one, and then use that to instantiate the window controller in question. For example, if your window controller is called "My Window Controller" and is located in the main storyboard...
let storyboard = NSStoryboard(name: "Main", bundle: nil)
let windowController = storyboard.instantiateController(withIdentifier: "My Window Controller") as! NSWindowController
Then do whatever you like with windowController. If you want to display two windows when the app is launched, then maybe your app delegate has two properties for keeping track of the corresponding window controllers. In your app delegate's applicationDidFinishLaunching(notification:) method, you could create two windows using code like I've shown and assign the window controllers to those windows. If you want to open a window when the user clicks a button, put code like the code above in the button's action, and store a reference to the resulting window controller in some appropriate object, possibly the window controller where the action appears.