# remoteWindow(withMinimumSize:maximumSize:reply:) Requests the host application to create a window with a minimum and maximum size that displays a custom UI. ``` func remoteWindow(withMinimumSize minContentSize: CGSize, maximumSize maxContentSize: CGSize, reply: ((NSView?, (any Error)?) -> Void)!) ``` ``` func remoteWindow(withMinimumSize minContentSize: CGSize, maximumSize maxContentSize: CGSize) async throws -> NSView? ``` ## Parameters `minContentSize` The minimum content size for the requested window. `maxContentSize` The maximum content size for the requested window. `reply` Called when the window is created or if an error occurs during window creation. ## Discussion Call this method to request that the host creates a new window where your plug-in displays custom-user interface elements. The maximum window size is limited to 80% of the host application’s main window size. The reply block returns the window for your custom view. If there are any problems creating the window, `parentView` is `nil` and `error` contains an NSError that describes the problem. > Note: Each plug-in instance is limited to a single window. If a user doesn’t close the window that contains the custom-user interface elements, subsequent calls to this method return the same parent view. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)