import Cocoa import FlutterMacOS class MainFlutterWindow: NSWindow { override func awakeFromNib() { let flutterViewController = FlutterViewController() let windowFrame = self.frame self.contentViewController = flutterViewController let newWindowRect = NSRect(x: windowFrame.origin.x, y: windowFrame.origin.y, width: 300, height: 600) self.setFrame(newWindowRect, display: true) RegisterGeneratedPlugins(registry: flutterViewController) super.awakeFromNib() } }