Control window width and height

Sources/Core/Window/Window.swift

@@ -24,6 +24,10 @@ public struct Window: WinUISceneElement {
     var `open`: Int
     /// Whether to extend the content into the title bar.
     var extendContent: Bool?
+    /// The window's width.
+    var width: Meta.Binding<Int>?
+    /// The window's height.
+    var height: Meta.Binding<Int>?
 
     /// Create a window type with a certain identifier and user interface.
     /// - Parameters:
@@ -86,6 +90,16 @@ public struct Window: WinUISceneElement {
         }
         scene.content[.mainContent] = [storage]
         window.systemBackdrop = MicaBackdrop()
+        if width != nil || height != nil {
+            var size = window.appWindow.size
+            if let width {
+                size.width = .init(width.wrappedValue)
+            }
+            if let height {
+                size.height = .init(height.wrappedValue)
+            }
+            try? window.appWindow.resize(size)
+        }
         update(scene, app: app, updateProperties: true)
         return scene
     }
@@ -110,6 +124,10 @@ public struct Window: WinUISceneElement {
             updateProperties: updateProperties,
             type: WinUIMainView.self
         )
+        StateManager.blockUpdates = true
+        width?.wrappedValue = .init(window.appWindow.size.width)
+        height?.wrappedValue = .init(window.appWindow.size.height)
+        StateManager.blockUpdates = false
         guard updateProperties else {
             return
         }
@@ -132,6 +150,22 @@ public struct Window: WinUISceneElement {
         return newSelf
     }
 
+    /// The window's width and height.
+    /// - Parameters:
+    ///   - width: The width.
+    ///   - height: The height.
+    /// - Returns: The window.
+    ///
+    /// Currently, the properties get updated only on view updates.
+    /// The binding can be used for storing the current state of the window for the next launch,
+    /// but not for live updating the user interface (this will be handled automatically by WinUI).
+    public func frame(width: Meta.Binding<Int>? = nil, height: Meta.Binding<Int>? = nil) -> Self {
+        var newSelf = self
+        newSelf.width = width
+        newSelf.height = height
+        return newSelf
+    }
+
 }
 
 /// A WinUI window.

Sources/Demo/Demo.swift

@@ -14,6 +14,8 @@ Demo.main()
 
 struct Demo: App {
 
+    @State private var width = 1000
+    @State private var height = 800
     let app = WinUIApp()
 
     var scene: Scene {
@@ -21,6 +23,7 @@ struct Demo: App {
             ContentView(app: app)
         }
         .extendContentIntoTitleBar()
+        .frame(width: $width, height: $height)
     }
 
 }