diff --git a/Sources/Adwaita/View/DropDown+.swift b/Sources/Adwaita/View/DropDown+.swift
index bb2fc5e..ecf1513 100644
--- a/Sources/Adwaita/View/DropDown+.swift
+++ b/Sources/Adwaita/View/DropDown+.swift
@@ -17,27 +17,40 @@ extension DropDown {
 
     /// Initialize a combo row.
     /// - Parameters:
-    ///     - title: The row's title.
     ///     - selection: The selected value.
     ///     - values: The available values.
     public init<Element>(
         selection: Binding<Element.ID>,
         values: [Element]
     ) where Element: Identifiable, Element: CustomStringConvertible {
+        self.init(selection: selection, values: values, id: \.id, description: \.description)
+    }
+
+    /// Initialize a combo row.
+    /// - Parameters:
+    ///     - title: The row's title.
+    ///     - selection: The selected value.
+    ///     - values: The available values.
+    public init<Element, Identifier>(
+        selection: Binding<Identifier>,
+        values: [Element],
+        id: KeyPath<Element, Identifier>,
+        description: KeyPath<Element, String>
+    ) where Identifier: Equatable {
         self.init()
         self = self.selected(.init {
-            .init(values.firstIndex { $0.id == selection.wrappedValue } ?? 0)
+            .init(values.firstIndex { $0[keyPath: id] == selection.wrappedValue } ?? 0)
         } set: { index in
-            if let id = values[safe: .init(index)]?.id {
+            if let id = values[safe: .init(index)]?[keyPath: id] {
                 selection.wrappedValue = id
             }
         })
         appearFunctions.append { storage, _ in
             storage.fields[Self.stringList] = gtk_drop_down_get_model(storage.opaquePointer)
-            Self.updateContent(storage: storage, values: values, element: Element.self)
+            Self.updateContent(storage: storage, values: values, id: id, description: description)
         }
         updateFunctions.append { storage, _, _ in
-            Self.updateContent(storage: storage, values: values, element: Element.self)
+            Self.updateContent(storage: storage, values: values, id: id, description: description)
         }
     }
 
@@ -45,20 +58,23 @@ extension DropDown {
     /// - Parameters:
     ///     - storage: The view storage.
     ///     - values: The elements.
-    ///     - element: The type of the elements.
-    static func updateContent<Element>(
+    ///     - id: The keypath to the id.
+    ///     - description: The keypath to the description.
+    static func updateContent<Element, Identifier>(
         storage: ViewStorage,
         values: [Element],
-        element: Element.Type
-    ) where Element: Identifiable, Element: CustomStringConvertible {
+        id: KeyPath<Element, Identifier>,
+        description: KeyPath<Element, String>
+    ) where Identifier: Equatable {
         if let list = storage.fields[Self.stringList] as? OpaquePointer {
             let old = storage.fields[Self.values] as? [Element] ?? []
-            old.identifiableTransform(
+            old.transform(
                 to: values,
+                id: id,
                 functions: .init { index in
                     gtk_string_list_remove(list, .init(index))
                 } insert: { _, element in
-                    gtk_string_list_append(list, element.description)
+                    gtk_string_list_append(list, element[keyPath: description])
                 }
             )
             storage.fields[Self.values] = values
diff --git a/Sources/Adwaita/View/FlowBox+.swift b/Sources/Adwaita/View/FlowBox+.swift
index 8abff67..a18706e 100644
--- a/Sources/Adwaita/View/FlowBox+.swift
+++ b/Sources/Adwaita/View/FlowBox+.swift
@@ -17,19 +17,21 @@ extension FlowBox {
     /// Initialize `FlowBox`.
     /// - Parameters:
     ///   - elements: The elements.
+    ///   - id: The element identifier keypath.
     ///   - selection: The identifier of the selected element. Selection disabled if `nil`.
     ///   - content: The view for an element.
     public init(
         _ elements: [Element],
-        selection: Binding<Element.ID>? = nil,
+        id: KeyPath<Element, Identifier>,
+        selection: Binding<Identifier>? = nil,
         @ViewBuilder content: @escaping (Element) -> Body
     ) {
-        self.init(elements, content: content)
-        let id: (ViewStorage, [Element]) -> Element.ID? = { storage, elements in
+        self.init(elements, id: id, content: content)
+        let getID: (ViewStorage, [Element]) -> Identifier? = { storage, elements in
             if let child = g_list_nth_data(gtk_flow_box_get_selected_children(storage.opaquePointer), 0) {
                 let element = gtk_flow_box_child_get_child(child.cast())
                 return elements[safe: storage.content[.mainContent]?
-                    .firstIndex { $0.opaquePointer?.cast() == element }]?.id
+                    .firstIndex { $0.opaquePointer?.cast() == element }]?[keyPath: id]
             }
             return nil
         }
@@ -37,12 +39,12 @@ extension FlowBox {
             updateFunctions.append { storage, _, _ in
                 storage.connectSignal(name: "selected_children_changed", id: Self.selectionField) {
                     if let elements = storage.fields[Self.elementsField] as? [Element],
-                    let id = id(storage, elements) {
+                    let id = getID(storage, elements) {
                         selection.wrappedValue = id
                     }
                 }
-                if selection.wrappedValue != id(storage, elements),
-                let index = elements.firstIndex(where: { $0.id == selection.wrappedValue })?.cInt {
+                if selection.wrappedValue != getID(storage, elements),
+                let index = elements.firstIndex(where: { $0[keyPath: id] == selection.wrappedValue })?.cInt {
                     gtk_flow_box_select_child(
                         storage.opaquePointer,
                         gtk_flow_box_get_child_at_index(storage.opaquePointer, index)
@@ -57,3 +59,20 @@ extension FlowBox {
     }
 
 }
+
+extension FlowBox where Element: Identifiable, Identifier == Element.ID {
+
+    /// Initialize `FlowBox`.
+    /// - Parameters:
+    ///   - elements: The elements.
+    ///   - selection: The identifier of the selected element. Selection disabled if `nil`.
+    ///   - content: The view for an element.
+    public init(
+        _ elements: [Element],
+        selection: Binding<Element.ID>? = nil,
+        @ViewBuilder content: @escaping (Element) -> Body
+    ) {
+        self.init(elements, id: \.id, selection: selection, content: content)
+    }
+
+}
diff --git a/Sources/Adwaita/View/ForEach.swift b/Sources/Adwaita/View/ForEach.swift
index 3f84ea9..06c643e 100644
--- a/Sources/Adwaita/View/ForEach.swift
+++ b/Sources/Adwaita/View/ForEach.swift
@@ -9,7 +9,7 @@ import CAdw
 import LevenshteinTransformations
 
 /// A dynamic list but without a list design in the user interface.
-public struct ForEach<Element>: AdwaitaWidget where Element: Identifiable {
+public struct ForEach<Element, Identifier>: AdwaitaWidget where Identifier: Equatable {
 
     /// The dynamic widget elements.
     var elements: [Element]
@@ -19,12 +19,20 @@ public struct ForEach<Element>: AdwaitaWidget where Element: Identifiable {
     var horizontal: Bool
     /// Whether the children should all be the same size.
     var homogeneous: Bool?
+    /// The path to the identifier.
+    var id: KeyPath<Element, Identifier>
 
     /// Initialize `ForEach`.
-    public init(_ elements: [Element], horizontal: Bool = false, @ViewBuilder content: @escaping (Element) -> Body) {
+    public init(
+        _ elements: [Element],
+        id: KeyPath<Element, Identifier>,
+        horizontal: Bool = false,
+        @ViewBuilder content: @escaping (Element) -> Body
+    ) {
         self.elements = elements
         self.content = content
         self.horizontal = horizontal
+        self.id = id
     }
 
     /// The view storage.
@@ -56,8 +64,9 @@ public struct ForEach<Element>: AdwaitaWidget where Element: Identifiable {
         var contentStorage: [ViewStorage] = storage.content[.mainContent] ?? []
         let old = storage.fields["element"] as? [Element] ?? []
         let widget: UnsafeMutablePointer<GtkBox>? = storage.opaquePointer?.cast()
-        old.identifiableTransform(
+        old.transform(
             to: elements,
+            id: id,
             functions: .init { index in
                 let child = contentStorage[safe: index]?.opaquePointer
                 gtk_box_remove(widget, child?.cast())
@@ -105,3 +114,15 @@ public struct ForEach<Element>: AdwaitaWidget where Element: Identifiable {
     }
 
 }
+
+extension ForEach where Element: Identifiable, Identifier == Element.ID {
+
+    /// Initialize `ForEach`.
+    public init(_ elements: [Element], horizontal: Bool = false, @ViewBuilder content: @escaping (Element) -> Body) {
+        self.elements = elements
+        self.content = content
+        self.horizontal = horizontal
+        self.id = \.id
+    }
+
+}
diff --git a/Sources/Adwaita/View/Forms/ComboRow+.swift b/Sources/Adwaita/View/Forms/ComboRow+.swift
index 0483f5f..f85cf8e 100644
--- a/Sources/Adwaita/View/Forms/ComboRow+.swift
+++ b/Sources/Adwaita/View/Forms/ComboRow+.swift
@@ -26,11 +26,26 @@ extension ComboRow {
         selection: Binding<Element.ID>,
         values: [Element]
     ) where Element: Identifiable, Element: CustomStringConvertible {
+        self.init(title, selection: selection, values: values, id: \.id, description: \.description)
+    }
+
+    /// Initialize a combo row.
+    /// - Parameters:
+    ///     - title: The row's title.
+    ///     - selection: The selected value.
+    ///     - values: The available values.
+    public init<Element, Identifier>(
+        _ title: String,
+        selection: Binding<Identifier>,
+        values: [Element],
+        id: KeyPath<Element, Identifier>,
+        description: KeyPath<Element, String>
+    ) where Identifier: Equatable {
         self = self.title(title)
         self = self.selected(.init {
-            .init(values.firstIndex { $0.id == selection.wrappedValue } ?? 0)
+            .init(values.firstIndex { $0[keyPath: id] == selection.wrappedValue } ?? 0)
         } set: { index in
-            if let id = values[safe: .init(index)]?.id {
+            if let id = values[safe: .init(index)]?[keyPath: id] {
                 selection.wrappedValue = id
             }
         })
@@ -39,34 +54,10 @@ extension ComboRow {
             storage.fields[Self.stringList] = list
             adw_combo_row_set_model(storage.opaquePointer?.cast(), list)
             g_object_unref(list?.cast())
-            Self.updateContent(storage: storage, values: values, element: Element.self)
+            DropDown.updateContent(storage: storage, values: values, id: id, description: description)
         }
         updateFunctions.append { storage, _, _ in
-            Self.updateContent(storage: storage, values: values, element: Element.self)
-        }
-    }
-
-    /// Update the combo row's content.
-    /// - Parameters:
-    ///     - storage: The view storage.
-    ///     - values: The elements.
-    ///     - element: The type of the elements.
-    static func updateContent<Element>(
-        storage: ViewStorage,
-        values: [Element],
-        element: Element.Type
-    ) where Element: Identifiable, Element: CustomStringConvertible {
-        if let list = storage.fields[Self.stringList] as? OpaquePointer {
-            let old = storage.fields[Self.values] as? [Element] ?? []
-            old.identifiableTransform(
-                to: values,
-                functions: .init { index in
-                    gtk_string_list_remove(list, .init(index))
-                } insert: { _, element in
-                    gtk_string_list_append(list, element.description)
-                }
-            )
-            storage.fields[Self.values] = values
+            DropDown.updateContent(storage: storage, values: values, id: id, description: description)
         }
     }
 
diff --git a/Sources/Adwaita/View/Generated/ActionRow.swift b/Sources/Adwaita/View/Generated/ActionRow.swift
index fe8297d..b9e2f2f 100644
--- a/Sources/Adwaita/View/Generated/ActionRow.swift
+++ b/Sources/Adwaita/View/Generated/ActionRow.swift
@@ -2,7 +2,7 @@
 //  ActionRow.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/AspectFrame.swift b/Sources/Adwaita/View/Generated/AspectFrame.swift
index 690bfb5..94cfeef 100644
--- a/Sources/Adwaita/View/Generated/AspectFrame.swift
+++ b/Sources/Adwaita/View/Generated/AspectFrame.swift
@@ -2,7 +2,7 @@
 //  AspectFrame.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/Avatar.swift b/Sources/Adwaita/View/Generated/Avatar.swift
index 62a5400..e332ea9 100644
--- a/Sources/Adwaita/View/Generated/Avatar.swift
+++ b/Sources/Adwaita/View/Generated/Avatar.swift
@@ -2,7 +2,7 @@
 //  Avatar.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/Banner.swift b/Sources/Adwaita/View/Generated/Banner.swift
index 5e7b85c..1b92c68 100644
--- a/Sources/Adwaita/View/Generated/Banner.swift
+++ b/Sources/Adwaita/View/Generated/Banner.swift
@@ -2,7 +2,7 @@
 //  Banner.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/Bin.swift b/Sources/Adwaita/View/Generated/Bin.swift
index c3602eb..5a53da7 100644
--- a/Sources/Adwaita/View/Generated/Bin.swift
+++ b/Sources/Adwaita/View/Generated/Bin.swift
@@ -2,7 +2,7 @@
 //  Bin.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/Box.swift b/Sources/Adwaita/View/Generated/Box.swift
index 2607fe5..3be9c31 100644
--- a/Sources/Adwaita/View/Generated/Box.swift
+++ b/Sources/Adwaita/View/Generated/Box.swift
@@ -2,7 +2,7 @@
 //  Box.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/Button.swift b/Sources/Adwaita/View/Generated/Button.swift
index c8d2f43..e6de6bd 100644
--- a/Sources/Adwaita/View/Generated/Button.swift
+++ b/Sources/Adwaita/View/Generated/Button.swift
@@ -2,7 +2,7 @@
 //  Button.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/ButtonContent.swift b/Sources/Adwaita/View/Generated/ButtonContent.swift
index 9cfc745..5ce1afd 100644
--- a/Sources/Adwaita/View/Generated/ButtonContent.swift
+++ b/Sources/Adwaita/View/Generated/ButtonContent.swift
@@ -2,7 +2,7 @@
 //  ButtonContent.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/Carousel.swift b/Sources/Adwaita/View/Generated/Carousel.swift
index c6b5082..cb8403c 100644
--- a/Sources/Adwaita/View/Generated/Carousel.swift
+++ b/Sources/Adwaita/View/Generated/Carousel.swift
@@ -2,7 +2,7 @@
 //  Carousel.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
@@ -19,7 +19,7 @@ import LevenshteinTransformations
 /// to provide page indicators for `AdwCarousel`.
 /// 
 /// 
-public struct Carousel<Element>: AdwaitaWidget where Element: Identifiable {
+public struct Carousel<Element, Identifier>: AdwaitaWidget where Identifier: Equatable {
 
     #if exposeGeneratedAppearUpdateFunctions
     /// Additional update functions for type extensions.
@@ -70,11 +70,14 @@ public struct Carousel<Element>: AdwaitaWidget where Element: Identifiable {
     var elements: [Element]
     /// The dynamic widget content.
     var content: (Element) -> Body
+    /// The dynamic widget identifier key path.
+    var id: KeyPath<Element, Identifier>
 
     /// Initialize `Carousel`.
-    public init(_ elements: [Element], @ViewBuilder content: @escaping (Element) -> Body) {
+    public init(_ elements: [Element], id: KeyPath<Element, Identifier>, @ViewBuilder content: @escaping (Element) -> Body) {
         self.elements = elements
         self.content = content
+        self.id = id
     }
 
     /// The view storage.
@@ -126,8 +129,9 @@ public struct Carousel<Element>: AdwaitaWidget where Element: Identifiable {
 
             var contentStorage: [ViewStorage] = storage.content[.mainContent] ?? []
             let old = storage.fields["element"] as? [Element] ?? []
-            old.identifiableTransform(
+            old.transform(
                 to: elements,
+                id: id,
                 functions: .init { index in
                     adw_carousel_remove(widget, adw_carousel_get_nth_page(widget, UInt(index).cInt))
                     contentStorage.remove(at: index)
@@ -212,3 +216,14 @@ public struct Carousel<Element>: AdwaitaWidget where Element: Identifiable {
     }
 
 }
+
+extension Carousel where Element: Identifiable, Identifier == Element.ID {
+
+    /// Initialize `Carousel`.
+    public init(_ elements: [Element], @ViewBuilder content: @escaping (Element) -> Body) {
+        self.elements = elements
+        self.content = content
+        self.id = \.id
+    }
+
+}
diff --git a/Sources/Adwaita/View/Generated/CenterBox.swift b/Sources/Adwaita/View/Generated/CenterBox.swift
index fb47e22..7be3d4e 100644
--- a/Sources/Adwaita/View/Generated/CenterBox.swift
+++ b/Sources/Adwaita/View/Generated/CenterBox.swift
@@ -2,7 +2,7 @@
 //  CenterBox.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/CheckButton.swift b/Sources/Adwaita/View/Generated/CheckButton.swift
index b131ab7..1c98535 100644
--- a/Sources/Adwaita/View/Generated/CheckButton.swift
+++ b/Sources/Adwaita/View/Generated/CheckButton.swift
@@ -2,7 +2,7 @@
 //  CheckButton.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/Clamp.swift b/Sources/Adwaita/View/Generated/Clamp.swift
index 25fc5f8..1d95074 100644
--- a/Sources/Adwaita/View/Generated/Clamp.swift
+++ b/Sources/Adwaita/View/Generated/Clamp.swift
@@ -2,7 +2,7 @@
 //  Clamp.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/ComboRow.swift b/Sources/Adwaita/View/Generated/ComboRow.swift
index b73398c..9278a16 100644
--- a/Sources/Adwaita/View/Generated/ComboRow.swift
+++ b/Sources/Adwaita/View/Generated/ComboRow.swift
@@ -2,7 +2,7 @@
 //  ComboRow.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/DropDown.swift b/Sources/Adwaita/View/Generated/DropDown.swift
index 1541a7f..d325d9a 100644
--- a/Sources/Adwaita/View/Generated/DropDown.swift
+++ b/Sources/Adwaita/View/Generated/DropDown.swift
@@ -2,7 +2,7 @@
 //  DropDown.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/Entry.swift b/Sources/Adwaita/View/Generated/Entry.swift
index fd477ce..5116d87 100644
--- a/Sources/Adwaita/View/Generated/Entry.swift
+++ b/Sources/Adwaita/View/Generated/Entry.swift
@@ -2,7 +2,7 @@
 //  Entry.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/EntryRow.swift b/Sources/Adwaita/View/Generated/EntryRow.swift
index d7820d9..016578f 100644
--- a/Sources/Adwaita/View/Generated/EntryRow.swift
+++ b/Sources/Adwaita/View/Generated/EntryRow.swift
@@ -2,7 +2,7 @@
 //  EntryRow.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/ExpanderRow.swift b/Sources/Adwaita/View/Generated/ExpanderRow.swift
index e1b01f4..5746ac4 100644
--- a/Sources/Adwaita/View/Generated/ExpanderRow.swift
+++ b/Sources/Adwaita/View/Generated/ExpanderRow.swift
@@ -2,7 +2,7 @@
 //  ExpanderRow.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/Fixed.swift b/Sources/Adwaita/View/Generated/Fixed.swift
index 3d4b5b7..94f0cc4 100644
--- a/Sources/Adwaita/View/Generated/Fixed.swift
+++ b/Sources/Adwaita/View/Generated/Fixed.swift
@@ -2,7 +2,7 @@
 //  Fixed.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/FlowBox.swift b/Sources/Adwaita/View/Generated/FlowBox.swift
index 57d4fd2..344b6d8 100644
--- a/Sources/Adwaita/View/Generated/FlowBox.swift
+++ b/Sources/Adwaita/View/Generated/FlowBox.swift
@@ -2,7 +2,7 @@
 //  FlowBox.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
@@ -37,7 +37,7 @@ import LevenshteinTransformations
 /// Also see `Gtk.ListBox`.
 /// 
 /// 
-public struct FlowBox<Element>: AdwaitaWidget where Element: Identifiable {
+public struct FlowBox<Element, Identifier>: AdwaitaWidget where Identifier: Equatable {
 
     #if exposeGeneratedAppearUpdateFunctions
     /// Additional update functions for type extensions.
@@ -130,11 +130,14 @@ public struct FlowBox<Element>: AdwaitaWidget where Element: Identifiable {
     var elements: [Element]
     /// The dynamic widget content.
     var content: (Element) -> Body
+    /// The dynamic widget identifier key path.
+    var id: KeyPath<Element, Identifier>
 
     /// Initialize `FlowBox`.
-    init(_ elements: [Element], @ViewBuilder content: @escaping (Element) -> Body) {
+    init(_ elements: [Element], id: KeyPath<Element, Identifier>, @ViewBuilder content: @escaping (Element) -> Body) {
         self.elements = elements
         self.content = content
+        self.id = id
     }
 
     /// The view storage.
@@ -216,8 +219,9 @@ public struct FlowBox<Element>: AdwaitaWidget where Element: Identifiable {
 
             var contentStorage: [ViewStorage] = storage.content[.mainContent] ?? []
             let old = storage.fields["element"] as? [Element] ?? []
-            old.identifiableTransform(
+            old.transform(
                 to: elements,
+                id: id,
                 functions: .init { index in
                     gtk_flow_box_remove(widget, gtk_flow_box_get_child_at_index(widget, index.cInt)?.cast())
                     contentStorage.remove(at: index)
@@ -377,3 +381,14 @@ public struct FlowBox<Element>: AdwaitaWidget where Element: Identifiable {
     }
 
 }
+
+extension FlowBox where Element: Identifiable, Identifier == Element.ID {
+
+    /// Initialize `FlowBox`.
+    public init(_ elements: [Element], @ViewBuilder content: @escaping (Element) -> Body) {
+        self.elements = elements
+        self.content = content
+        self.id = \.id
+    }
+
+}
diff --git a/Sources/Adwaita/View/Generated/HeaderBar.swift b/Sources/Adwaita/View/Generated/HeaderBar.swift
index a060cd4..1c47720 100644
--- a/Sources/Adwaita/View/Generated/HeaderBar.swift
+++ b/Sources/Adwaita/View/Generated/HeaderBar.swift
@@ -2,7 +2,7 @@
 //  HeaderBar.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/Image.swift b/Sources/Adwaita/View/Generated/Image.swift
index 1c9cda9..124e93d 100644
--- a/Sources/Adwaita/View/Generated/Image.swift
+++ b/Sources/Adwaita/View/Generated/Image.swift
@@ -2,7 +2,7 @@
 //  Image.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/Label.swift b/Sources/Adwaita/View/Generated/Label.swift
index 50d1bb5..b3a4365 100644
--- a/Sources/Adwaita/View/Generated/Label.swift
+++ b/Sources/Adwaita/View/Generated/Label.swift
@@ -2,7 +2,7 @@
 //  Label.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/LevelBar.swift b/Sources/Adwaita/View/Generated/LevelBar.swift
index 510c6ea..5855550 100644
--- a/Sources/Adwaita/View/Generated/LevelBar.swift
+++ b/Sources/Adwaita/View/Generated/LevelBar.swift
@@ -2,7 +2,7 @@
 //  LevelBar.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/LinkButton.swift b/Sources/Adwaita/View/Generated/LinkButton.swift
index 5972e9e..4fb7fe1 100644
--- a/Sources/Adwaita/View/Generated/LinkButton.swift
+++ b/Sources/Adwaita/View/Generated/LinkButton.swift
@@ -2,7 +2,7 @@
 //  LinkButton.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/ListBox.swift b/Sources/Adwaita/View/Generated/ListBox.swift
index fa13aa4..53c31a9 100644
--- a/Sources/Adwaita/View/Generated/ListBox.swift
+++ b/Sources/Adwaita/View/Generated/ListBox.swift
@@ -2,7 +2,7 @@
 //  ListBox.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
@@ -34,7 +34,7 @@ import LevenshteinTransformations
 /// as selected when the user tries to select it.
 /// 
 /// 
-public struct ListBox<Element>: AdwaitaWidget where Element: Identifiable {
+public struct ListBox<Element, Identifier>: AdwaitaWidget where Identifier: Equatable {
 
     #if exposeGeneratedAppearUpdateFunctions
     /// Additional update functions for type extensions.
@@ -107,11 +107,14 @@ public struct ListBox<Element>: AdwaitaWidget where Element: Identifiable {
     var elements: [Element]
     /// The dynamic widget content.
     var content: (Element) -> Body
+    /// The dynamic widget identifier key path.
+    var id: KeyPath<Element, Identifier>
 
     /// Initialize `ListBox`.
-    public init(_ elements: [Element], @ViewBuilder content: @escaping (Element) -> Body) {
+    public init(_ elements: [Element], id: KeyPath<Element, Identifier>, @ViewBuilder content: @escaping (Element) -> Body) {
         self.elements = elements
         self.content = content
+        self.id = id
     }
 
     /// The view storage.
@@ -186,8 +189,9 @@ public struct ListBox<Element>: AdwaitaWidget where Element: Identifiable {
 
             var contentStorage: [ViewStorage] = storage.content[.mainContent] ?? []
             let old = storage.fields["element"] as? [Element] ?? []
-            old.identifiableTransform(
+            old.transform(
                 to: elements,
+                id: id,
                 functions: .init { index in
                     gtk_list_box_remove(widget, gtk_list_box_get_row_at_index(widget, index.cInt)?.cast())
                     contentStorage.remove(at: index)
@@ -320,3 +324,14 @@ public struct ListBox<Element>: AdwaitaWidget where Element: Identifiable {
     }
 
 }
+
+extension ListBox where Element: Identifiable, Identifier == Element.ID {
+
+    /// Initialize `ListBox`.
+    public init(_ elements: [Element], @ViewBuilder content: @escaping (Element) -> Body) {
+        self.elements = elements
+        self.content = content
+        self.id = \.id
+    }
+
+}
diff --git a/Sources/Adwaita/View/Generated/Menu.swift b/Sources/Adwaita/View/Generated/Menu.swift
index 0097846..d4c7018 100644
--- a/Sources/Adwaita/View/Generated/Menu.swift
+++ b/Sources/Adwaita/View/Generated/Menu.swift
@@ -2,7 +2,7 @@
 //  Menu.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/NavigationView.swift b/Sources/Adwaita/View/Generated/NavigationView.swift
index a1de911..3738341 100644
--- a/Sources/Adwaita/View/Generated/NavigationView.swift
+++ b/Sources/Adwaita/View/Generated/NavigationView.swift
@@ -2,7 +2,7 @@
 //  NavigationView.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/Overlay.swift b/Sources/Adwaita/View/Generated/Overlay.swift
index b2470b4..a9b062b 100644
--- a/Sources/Adwaita/View/Generated/Overlay.swift
+++ b/Sources/Adwaita/View/Generated/Overlay.swift
@@ -2,7 +2,7 @@
 //  Overlay.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/OverlaySplitView.swift b/Sources/Adwaita/View/Generated/OverlaySplitView.swift
index 6d423da..15d1c34 100644
--- a/Sources/Adwaita/View/Generated/OverlaySplitView.swift
+++ b/Sources/Adwaita/View/Generated/OverlaySplitView.swift
@@ -2,7 +2,7 @@
 //  OverlaySplitView.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/PasswordEntryRow.swift b/Sources/Adwaita/View/Generated/PasswordEntryRow.swift
index 06f8809..83dfc54 100644
--- a/Sources/Adwaita/View/Generated/PasswordEntryRow.swift
+++ b/Sources/Adwaita/View/Generated/PasswordEntryRow.swift
@@ -2,7 +2,7 @@
 //  PasswordEntryRow.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/Picture.swift b/Sources/Adwaita/View/Generated/Picture.swift
index 4fcff4a..e0c5c83 100644
--- a/Sources/Adwaita/View/Generated/Picture.swift
+++ b/Sources/Adwaita/View/Generated/Picture.swift
@@ -2,7 +2,7 @@
 //  Picture.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/Popover.swift b/Sources/Adwaita/View/Generated/Popover.swift
index 80fc4c6..a07c6f6 100644
--- a/Sources/Adwaita/View/Generated/Popover.swift
+++ b/Sources/Adwaita/View/Generated/Popover.swift
@@ -2,7 +2,7 @@
 //  Popover.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/PreferencesGroup.swift b/Sources/Adwaita/View/Generated/PreferencesGroup.swift
index 6b4deff..3c3c895 100644
--- a/Sources/Adwaita/View/Generated/PreferencesGroup.swift
+++ b/Sources/Adwaita/View/Generated/PreferencesGroup.swift
@@ -2,7 +2,7 @@
 //  PreferencesGroup.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/PreferencesPage.swift b/Sources/Adwaita/View/Generated/PreferencesPage.swift
index fc9d2e0..d7d82b9 100644
--- a/Sources/Adwaita/View/Generated/PreferencesPage.swift
+++ b/Sources/Adwaita/View/Generated/PreferencesPage.swift
@@ -2,7 +2,7 @@
 //  PreferencesPage.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/PreferencesRow.swift b/Sources/Adwaita/View/Generated/PreferencesRow.swift
index fb5a99d..d974f86 100644
--- a/Sources/Adwaita/View/Generated/PreferencesRow.swift
+++ b/Sources/Adwaita/View/Generated/PreferencesRow.swift
@@ -2,7 +2,7 @@
 //  PreferencesRow.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/ProgressBar.swift b/Sources/Adwaita/View/Generated/ProgressBar.swift
index 1a1a1e1..e04ddfc 100644
--- a/Sources/Adwaita/View/Generated/ProgressBar.swift
+++ b/Sources/Adwaita/View/Generated/ProgressBar.swift
@@ -2,7 +2,7 @@
 //  ProgressBar.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/ScrolledWindow.swift b/Sources/Adwaita/View/Generated/ScrolledWindow.swift
index 93ea0d8..903b29a 100644
--- a/Sources/Adwaita/View/Generated/ScrolledWindow.swift
+++ b/Sources/Adwaita/View/Generated/ScrolledWindow.swift
@@ -2,7 +2,7 @@
 //  ScrolledWindow.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/SearchBar.swift b/Sources/Adwaita/View/Generated/SearchBar.swift
index 518f89e..9dcb3fc 100644
--- a/Sources/Adwaita/View/Generated/SearchBar.swift
+++ b/Sources/Adwaita/View/Generated/SearchBar.swift
@@ -2,7 +2,7 @@
 //  SearchBar.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/SearchEntry.swift b/Sources/Adwaita/View/Generated/SearchEntry.swift
index 6e7efae..94fe417 100644
--- a/Sources/Adwaita/View/Generated/SearchEntry.swift
+++ b/Sources/Adwaita/View/Generated/SearchEntry.swift
@@ -2,7 +2,7 @@
 //  SearchEntry.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/Separator.swift b/Sources/Adwaita/View/Generated/Separator.swift
index df6152b..dc90e4b 100644
--- a/Sources/Adwaita/View/Generated/Separator.swift
+++ b/Sources/Adwaita/View/Generated/Separator.swift
@@ -2,7 +2,7 @@
 //  Separator.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/SpinRow.swift b/Sources/Adwaita/View/Generated/SpinRow.swift
index bfed1a9..55c97ae 100644
--- a/Sources/Adwaita/View/Generated/SpinRow.swift
+++ b/Sources/Adwaita/View/Generated/SpinRow.swift
@@ -2,7 +2,7 @@
 //  SpinRow.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/Spinner.swift b/Sources/Adwaita/View/Generated/Spinner.swift
index 926f08d..89f0fcb 100644
--- a/Sources/Adwaita/View/Generated/Spinner.swift
+++ b/Sources/Adwaita/View/Generated/Spinner.swift
@@ -2,7 +2,7 @@
 //  Spinner.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/SplitButton.swift b/Sources/Adwaita/View/Generated/SplitButton.swift
index 124664f..946d4a6 100644
--- a/Sources/Adwaita/View/Generated/SplitButton.swift
+++ b/Sources/Adwaita/View/Generated/SplitButton.swift
@@ -2,7 +2,7 @@
 //  SplitButton.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/StatusPage.swift b/Sources/Adwaita/View/Generated/StatusPage.swift
index 5f091d1..8f5719c 100644
--- a/Sources/Adwaita/View/Generated/StatusPage.swift
+++ b/Sources/Adwaita/View/Generated/StatusPage.swift
@@ -2,7 +2,7 @@
 //  StatusPage.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/SwitchRow.swift b/Sources/Adwaita/View/Generated/SwitchRow.swift
index e77b3b1..6b5ea14 100644
--- a/Sources/Adwaita/View/Generated/SwitchRow.swift
+++ b/Sources/Adwaita/View/Generated/SwitchRow.swift
@@ -2,7 +2,7 @@
 //  SwitchRow.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/ToastOverlay.swift b/Sources/Adwaita/View/Generated/ToastOverlay.swift
index dd44d42..e4afd06 100644
--- a/Sources/Adwaita/View/Generated/ToastOverlay.swift
+++ b/Sources/Adwaita/View/Generated/ToastOverlay.swift
@@ -2,7 +2,7 @@
 //  ToastOverlay.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/ToggleButton.swift b/Sources/Adwaita/View/Generated/ToggleButton.swift
index 7478636..c23b6f3 100644
--- a/Sources/Adwaita/View/Generated/ToggleButton.swift
+++ b/Sources/Adwaita/View/Generated/ToggleButton.swift
@@ -2,7 +2,7 @@
 //  ToggleButton.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/ToggleGroup.swift b/Sources/Adwaita/View/Generated/ToggleGroup.swift
index f300d7d..bb9a129 100644
--- a/Sources/Adwaita/View/Generated/ToggleGroup.swift
+++ b/Sources/Adwaita/View/Generated/ToggleGroup.swift
@@ -2,7 +2,7 @@
 //  ToggleGroup.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/ToolbarView.swift b/Sources/Adwaita/View/Generated/ToolbarView.swift
index 48cc4a5..3d6f603 100644
--- a/Sources/Adwaita/View/Generated/ToolbarView.swift
+++ b/Sources/Adwaita/View/Generated/ToolbarView.swift
@@ -2,7 +2,7 @@
 //  ToolbarView.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/Generated/WindowTitle.swift b/Sources/Adwaita/View/Generated/WindowTitle.swift
index fba7910..3bcc118 100644
--- a/Sources/Adwaita/View/Generated/WindowTitle.swift
+++ b/Sources/Adwaita/View/Generated/WindowTitle.swift
@@ -2,7 +2,7 @@
 //  WindowTitle.swift
 //  Adwaita
 //
-//  Created by auto-generation on 03.02.26.
+//  Created by auto-generation on 04.02.26.
 //
 
 import CAdw
diff --git a/Sources/Adwaita/View/List+.swift b/Sources/Adwaita/View/List+.swift
deleted file mode 100644
index e3a6faf..0000000
--- a/Sources/Adwaita/View/List+.swift
+++ /dev/null
@@ -1,24 +0,0 @@
-//
-//  List+.swift
-//  Adwaita
-//
-//  Created by david-swift on 16.10.24.
-//
-
-extension List {
-
-    /// Add the "navigation-sidebar" style class.
-    /// - Parameter active: Whether the style is applied.
-    /// - Returns: A view.
-    public func sidebarStyle(_ active: Bool = true) -> AnyView {
-        style("navigation-sidebar", active: active)
-    }
-
-    /// Apply the boxed list style class.
-    /// - Parameter active: Whether the style is applied.
-    /// - Returns: A view.
-    public func boxedList(_ active: Bool = true) -> AnyView {
-        style("boxed-list", active: active)
-    }
-
-}
diff --git a/Sources/Adwaita/View/List.swift b/Sources/Adwaita/View/List.swift
index 5276f72..8a75f94 100644
--- a/Sources/Adwaita/View/List.swift
+++ b/Sources/Adwaita/View/List.swift
@@ -21,17 +21,19 @@ extension List {
     /// Initialize `List`.
     /// - Parameters:
     ///   - elements: The elements.
+    ///   - id: The key path to the elements' identifiers.
     ///   - selection: The identifier of the selected element. Selection disabled if `nil`.
     ///   - content: The view for an element.
     public init(
         _ elements: [Element],
-        selection: Binding<Element.ID>?,
+        id: KeyPath<Element, Identifier>,
+        selection: Binding<Identifier>?,
         @ViewBuilder content: @escaping (Element) -> Body
     ) {
-        self.init(elements, content: content)
-        let id: (ViewStorage, [Element]) -> Element.ID? = { storage, elements in
+        self.init(elements, id: id, content: content)
+        let getID: (ViewStorage, [Element]) -> Identifier? = { storage, elements in
             if let row = gtk_list_box_get_selected_row(storage.opaquePointer) {
-                return elements[safe: .init(gtk_list_box_row_get_index(row))]?.id
+                return elements[safe: .init(gtk_list_box_row_get_index(row))]?[keyPath: id]
             }
             return nil
         }
@@ -39,13 +41,13 @@ extension List {
             updateFunctions.append { storage, _, _ in
                 storage.connectSignal(name: "selected_rows_changed", id: Self.selectionField) {
                     if let elements = storage.fields[Self.elementsField] as? [Element],
-                       let id = id(storage, elements),
+                       let id = getID(storage, elements),
                        selection.wrappedValue != id {
                         selection.wrappedValue = id
                     }
                 }
-                if selection.wrappedValue != id(storage, elements),
-                let index = elements.firstIndex(where: { $0.id == selection.wrappedValue })?.cInt {
+                if selection.wrappedValue != getID(storage, elements),
+                let index = elements.firstIndex(where: { $0[keyPath: id] == selection.wrappedValue })?.cInt {
                     gtk_list_box_select_row(
                         storage.opaquePointer,
                         gtk_list_box_get_row_at_index(storage.opaquePointer, index)
@@ -59,4 +61,35 @@ extension List {
         }
     }
 
+    /// Add the "navigation-sidebar" style class.
+    /// - Parameter active: Whether the style is applied.
+    /// - Returns: A view.
+    public func sidebarStyle(_ active: Bool = true) -> AnyView {
+        style("navigation-sidebar", active: active)
+    }
+
+    /// Apply the boxed list style class.
+    /// - Parameter active: Whether the style is applied.
+    /// - Returns: A view.
+    public func boxedList(_ active: Bool = true) -> AnyView {
+        style("boxed-list", active: active)
+    }
+
+}
+
+extension List where Element: Identifiable, Element.ID == Identifier {
+
+    /// Initialize `List`.
+    /// - Parameters:
+    ///   - elements: The elements.
+    ///   - selection: The identifier of the selected element. Selection disabled if `nil`.
+    ///   - content: The view for an element.
+    public init(
+        _ elements: [Element],
+        selection: Binding<Element.ID>?,
+        @ViewBuilder content: @escaping (Element) -> Body
+    ) {
+        self.init(elements, id: \.id, selection: selection, content: content)
+    }
+
 }
diff --git a/Sources/Adwaita/View/ToggleGroup+.swift b/Sources/Adwaita/View/ToggleGroup+.swift
index 44a1c7a..9b6aa29 100644
--- a/Sources/Adwaita/View/ToggleGroup+.swift
+++ b/Sources/Adwaita/View/ToggleGroup+.swift
@@ -23,72 +23,103 @@ extension ToggleGroup {
         selection: Binding<Element.ID>,
         values: [Element]
     ) where Element: ToggleGroupItem {
+        self.init(
+            selection: selection,
+            values: values,
+            id: \.id,
+            label: \.id.description,
+            icon: \.icon,
+            showLabel: \.showLabel
+        )
+    }
+
+    /// Initialize a toggle group.
+    /// - Parameters:
+    ///     - selection: The selected value.
+    ///     - values: The available values.
+    ///     - id: The path to the identifier.
+    ///     - label: The path to the label.
+    ///     - icon: The path to the icon.
+    ///     - showLabel: The path to the boolean that defines whether to show an element's label.
+    public init<Element, Identifier>(
+        selection: Binding<Identifier>,
+        values: [Element],
+        id: KeyPath<Element, Identifier>,
+        label: KeyPath<Element, String>,
+        icon: KeyPath<Element, Icon?>? = nil,
+        showLabel: KeyPath<Element, Bool>? = nil
+    ) where Identifier: Equatable {
         self.init()
         appearFunctions.append { storage, _ in
             storage.notify(name: "active-name", id: "init") {
                 if let name = adw_toggle_group_get_active_name(storage.opaquePointer),
                 let values = storage.fields[Self.values] as? [Element],
-                let value = values.first(where: { $0.id.description == String(cString: name) }) {
-                    selection.wrappedValue = value.id
+                let identifier = values
+                    .map({ $0[keyPath: label] }).first(where: { $0.description == String(cString: name) }),
+                let value = values.first(where: { $0[keyPath: label] == identifier }) {
+                    selection.wrappedValue = value[keyPath: id]
                 }
             }
-            Self.updateContent(
-                storage: storage,
-                selection: selection.wrappedValue,
-                values: values,
-                updateProperties: true
-            )
         }
         updateFunctions.append { storage, _, updateProperties in
             Self.updateContent(
                 storage: storage,
                 selection: selection.wrappedValue,
                 values: values,
+                id: id,
+                label: label,
+                icon: icon,
+                showLabel: showLabel,
                 updateProperties: updateProperties
             )
         }
     }
 
+    // swiftlint:disable function_parameter_count
     /// Update the combo row's content.
-    /// - Parameters:
-    ///     - storage: The view storage.
-    ///     - values: The elements.
-    ///     - updateProperties: Whether to update the properties.
-    static func updateContent<Element>(
+    static func updateContent<Element, Identifier>(
         storage: ViewStorage,
-        selection: Element.ID,
+        selection: Identifier,
         values: [Element],
+        id: KeyPath<Element, Identifier>,
+        label: KeyPath<Element, String>,
+        icon: KeyPath<Element, Icon?>?,
+        showLabel: KeyPath<Element, Bool>?,
         updateProperties: Bool
-    ) where Element: ToggleGroupItem {
+    ) where Identifier: Equatable {
         guard updateProperties else {
             return
         }
         let old = storage.fields[Self.values] as? [Element] ?? []
-        old.identifiableTransform(
+        old.transform(
             to: values,
+            id: id,
             functions: .init { index in
-                if let id = old[safe: index]?.id.description,
+                if let id = old[safe: index]?[keyPath: label],
                 let toggle = storage.fields[Self.toggle + id] as? OpaquePointer {
                     adw_toggle_group_remove(storage.opaquePointer, toggle)
                 }
             } insert: { _, element in
                 let toggle = adw_toggle_new()
-                adw_toggle_set_name(toggle, element.id.description)
-                if element.showLabel {
-                    adw_toggle_set_label(toggle, element.id.description)
+                adw_toggle_set_name(toggle, element[keyPath: label])
+                if let showLabel, !element[keyPath: showLabel] {
+                    adw_toggle_set_tooltip(toggle, element[keyPath: label])
                 } else {
-                    adw_toggle_set_tooltip(toggle, element.id.description)
+                    adw_toggle_set_label(toggle, element[keyPath: label])
                 }
-                if let icon = element.icon {
+                if let icon, let icon = element[keyPath: icon] {
                     adw_toggle_set_icon_name(toggle, icon.string)
                 }
-                storage.fields[Self.toggle + element.id.description] = toggle
+                storage.fields[Self.toggle + element[keyPath: label]] = toggle
                 adw_toggle_group_add(storage.opaquePointer, toggle)
             }
         )
         storage.fields[Self.values] = values
-        adw_toggle_group_set_active_name(storage.opaquePointer, selection.description)
+        if let selection = values.first(where: { $0[keyPath: id] == selection }) {
+            adw_toggle_group_set_active_name(storage.opaquePointer, selection[keyPath: label])
+        }
     }
+    // swiftlint:enable function_parameter_count
 
 }
 
diff --git a/Sources/Demo/ToggleGroupDemo.swift b/Sources/Demo/ToggleGroupDemo.swift
index 1272130..d916191 100644
--- a/Sources/Demo/ToggleGroupDemo.swift
+++ b/Sources/Demo/ToggleGroupDemo.swift
@@ -15,8 +15,13 @@ struct ToggleGroupDemo: View {
     @State private var selection: Subview = .view1
 
     var view: Body {
-        ToggleGroup(selection: $selection, values: Subview.allCases)
-            .padding()
+        ToggleGroup(
+            selection: $selection,
+            values: Subview.allCases,
+            id: \.self,
+            label: \.rawValue
+        )
+        .padding()
         VStack {
             Text(selection.rawValue)
                 .padding()
@@ -26,19 +31,11 @@ struct ToggleGroupDemo: View {
         .padding()
     }
 
-    enum Subview: String, ToggleGroupItem, CaseIterable, CustomStringConvertible {
+    enum Subview: String, CaseIterable, Equatable {
 
         case view1 = "View 1"
         case view2 = "View 2"
 
-        var id: Self { self }
-
-        var description: String { rawValue }
-
-        var icon: Icon? { nil }
-
-        var showLabel: Bool { true }
-
     }
 
 }
diff --git a/Sources/Generation/GIR/Class+.swift b/Sources/Generation/GIR/Class+.swift
index 460ebe8..b768730 100644
--- a/Sources/Generation/GIR/Class+.swift
+++ b/Sources/Generation/GIR/Class+.swift
@@ -24,7 +24,7 @@ extension Class {
             .filter { config.requiredProperties.contains($0.name) }
         var initializer = "\(config.internalInitializer ? "" : "public ")init("
         if config.dynamicWidget != nil {
-            initializer.append("_ elements: [Element], ")
+            initializer.append("_ elements: [Element], id: KeyPath<Element, Identifier>, ")
         }
         for property in requiredProperties {
             initializer.append("\(property.parameter(config: config, genConfig: genConfig)), ")
@@ -46,6 +46,7 @@ extension Class {
 
                         self.elements = elements
                         self.content = content
+                        self.id = id
                 """
             )
         }
@@ -167,6 +168,8 @@ extension Class {
                 var elements: [Element]
                 /// The dynamic widget content.
                 var content: (Element) -> Body
+                /// The dynamic widget identifier key path.
+                var id: KeyPath<Element, Identifier>
             """
         }
         content += staticWidgetProperties(namespace: namespace, configs: configs)
@@ -226,8 +229,9 @@ extension Class {
             return """
                         var contentStorage: [ViewStorage] = storage.content[.mainContent] ?? []
                         let old = storage.fields["element"] as? [Element] ?? []
-                        old.identifiableTransform(
+                        old.transform(
                             to: elements,
+                            id: id,
                             functions: .init { index in
                                 \(dynamicWidget.remove)(\(widget), \(dynamicWidget.getElement))
                                 contentStorage.remove(at: index)
diff --git a/Sources/Generation/GIR/Class.swift b/Sources/Generation/GIR/Class.swift
index b6e6384..3d2d204 100644
--- a/Sources/Generation/GIR/Class.swift
+++ b/Sources/Generation/GIR/Class.swift
@@ -64,10 +64,25 @@ struct Class: ClassLike, Decodable {
         dateFormatter.dateFormat = "dd.MM.yy"
         let widgetName = config.name ?? config.class
         let definition: String
+        var extensions = ""
         if config.dynamicWidget == nil {
             definition = "\(widgetName): AdwaitaWidget"
         } else {
-            definition = "\(widgetName)<Element>: AdwaitaWidget where Element: Identifiable"
+            definition = "\(widgetName)<Element, Identifier>: AdwaitaWidget where Identifier: Equatable"
+            extensions += """
+
+            extension \(widgetName) where Element: Identifiable, Identifier == Element.ID {
+
+                /// Initialize `\(widgetName)`.
+                public init(_ elements: [Element], @ViewBuilder content: @escaping (Element) -> Body) {
+                    self.elements = elements
+                    self.content = content
+                    self.id = \\.id
+                }
+
+            }
+
+            """
         }
         return """
         //
@@ -135,7 +150,7 @@ struct Class: ClassLike, Decodable {
             }
         \(generateModifiers(config: config, genConfig: genConfig, namespace: namespace, configs: configs))
         }
-
+        \(extensions)
         """
     }
     // swiftlint:enable function_body_length line_length