Gavin Wiggins

Window Resizability in SwiftUI

Published on February 21, 2023

The desired window size is determined by the windowResizability method of the WindowGroup. The example below uses the frame of the content view to fix the window size to 300x200.

// WindowResizabilityApp.swift

import SwiftUI

@main
struct WindowResizabilityApp: App {
    var body: some Scene {
        WindowGroup {
            ContentView()
                .frame(width: 300, height: 200)
                .background(.orange)
        }
        .windowResizability(.contentSize)
    }
}

// ContentView.swift

import SwiftUI

struct ContentView: View {
    var body: some View {
        VStack {
            Image(systemName: "globe").imageScale(.large)
            Text("Hello, world!").fontWeight(.bold)
        }
    }
}

window size

In the next example, a resizable window is created by defining the minimum and maximum size of the content view's frame. The minimum window size is 200x200 and its maximum size is 500x400.

// WindowResizabilityApp.swift

import SwiftUI

@main
struct WindowResizabilityApp: App {
    var body: some Scene {
        WindowGroup {
            ContentView()
                .frame(minWidth: 200, maxWidth: 500, minHeight: 200, maxHeight: 400)
                .background(.purple)
        }
        .windowResizability(.contentSize)
    }
}

// ContentView.swift

import SwiftUI

struct ContentView: View {
    var body: some View {
        VStack {
            Image(systemName: "globe").imageScale(.large)
            Text("Hello, world!").fontWeight(.bold)
        }
    }
}

window size