使用 swift 启动主窗口

Question

I'm kind of new in swift, but I'm ' stuck ' in something.

I know C, Java, C++, PHP, etc...

I'm trying to compose an multi-windowed App (Mac OS application using Cocoa), using swift. I can already do it, but my problem is when I close the main window. If I close my main window, when I try to add a child to it, I will get an error or the new window just does not open.

I have this:

class SmallWindow: NSViewController {

    @IBOutlet var window: NSWindow! //Window inside the .xib file

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do view setup here.
    }

}

I already tried the above using NSWindowController and NSWindow .

var smallwin = SmallWindow()
smallwin.window.makeKeyAndOrderFront(self) 
//already tried with smallwin.window too

I am wondering how to programmatically start a new window. Am I missing some steps?

@IBOutlet var window: NSWindow!
@IBOutlet var smallwin : SmallWindow!

func applicationDidFinishLaunching(aNotification: NSNotification) {

    smallwin = SmallWindow()
    window.addChildWindow(smallwin.window, ordered: NSWindowOrderingMode.Above)

}

Answer 1

You probably don't need a child window. You just need a window.

To put a new window on the screen, you need to do three things:

1. Create the window, either programmatically or by loading a nib.

2. Send an order-in message to the window. Usually you want to send makeKeyAndOrderFront or orderFront . See “Opening and Closing Windows” in the Window Programming Guide .

3. Keep a strong reference to the window. The system doesn't necessarily keep a strong reference to an on-screen window. If the window is deallocated, it will remove itself from the screen.