Window Window Window Window Class

Definition

public : sealed class Window

struct winrt::Windows::UI::Xaml::Window

public sealed class Window

Public NotInheritable Class Window

Attributes

ContractVersionAttribute MarshalingBehaviorAttribute StaticAttribute ThreadingAttribute WebHostHiddenAttribute

Windows 10 requirements

Examples

The following code example shows the OnLaunched method override generated for the blank application template in Microsoft Visual Studio. This code demonstrates typical usage patterns for the Current and Content properties and the Activate method.

protected override void OnLaunched(LaunchActivatedEventArgs args)
{
    // Create a Frame to act navigation context and navigate to the first page
    var rootFrame = new Frame();
    rootFrame.Navigate(typeof(BlankPage));

    // Place the frame in the current Window and ensure that it is active
    Window.Current.Content = rootFrame;
    Window.Current.Activate();
}

Protected Overrides Sub OnLaunched(args As 
    Windows.ApplicationModel.Activation.LaunchActivatedEventArgs)

    ' Create a Frame to act navigation context and navigate to the first page
    Dim rootFrame As New Frame()
    rootFrame.Navigate(GetType(BlankPage))

    ' Place the frame in the current Window and ensure that it is active
    Window.Current.Content = rootFrame
    Window.Current.Activate()
End Sub

Remarks

This class represents the window of the current Application. In the same manner as the static Application property, the static Current property will return the app window object. From this object, an app can utilize the Dispatcher or determine the size of the Window from the Bounds property. The most common usage for Window is setting a UIElement to the Content that represents the app UI. This is usually done as part of app activation (for example in the OnLaunched override.) You can change this window content throughout the lifetime of the window.

There is no XAML representation of the Window class because it is not a control.

A Window object is just surfacing information from CoreWindow, which in turn is referencing the window created by the system.

Make sure to call Activate on any Window you use on initial activation. If you use the default app templates from Microsoft Visual Studio, calling Window.Activate is part of the initial code in the app.xaml code-behind file.

The LayoutAwarePage class that is part of some application templates in Microsoft Visual Studio has handling for the SizeChanged event, which is used for keeping track of visual states that match values of ApplicationViewState. LayoutAwarePage also has code that checks Bounds and uses this value to influence how page-wide input events are handled.

Version history

Properties

Methods

Events

See also

• OnLaunched(LaunchActivatedEventArgs)
• Handle app activation
• CoreWindow CoreWindow