WindowSizeChangedEventArgs WindowSizeChangedEventArgs WindowSizeChangedEventArgs WindowSizeChangedEventArgs Class


Contains the argument returned by a window size change event.

public : sealed class WindowSizeChangedEventArgs : ICoreWindowEventArgs, IWindowSizeChangedEventArgs
struct winrt::Windows::UI::Core::WindowSizeChangedEventArgs : ICoreWindowEventArgs, IWindowSizeChangedEventArgs
public sealed class WindowSizeChangedEventArgs : ICoreWindowEventArgs, IWindowSizeChangedEventArgs
Public NotInheritable Class WindowSizeChangedEventArgs Implements ICoreWindowEventArgs, IWindowSizeChangedEventArgs
Windows 10 requirements
Device family
Windows 10 (introduced v10.0.10240.0)
API contract
Windows.Foundation.UniversalApiContract (introduced v1)


This object is returned by a delegate registered for the CoreWindow.SizeChanged event.

// returning window size change events data through WindowSizeChangedEventArgs

void MyCoreWindowEvents::SetWindow( // implementation called by CoreApplication::Run(), provided for context
    _In_ CoreWindow^ window

    // ...
    window->SizeChanged +=
        ref new TypedEventHandler<CoreWindow^, WindowSizeChangedEventArgs^>(this, &CoreWindowEvents::OnWindowSizeChanged)

    // ...



: This class is not agile, which means that you need to consider its threading model and marshaling behavior. For more info, see Threading and Marshaling (C++/CX).


Handled Handled Handled Handled

Gets or sets whether the window size event was handled.

Size Size Size Size

Gets the new size of the window in units of effective (view) pixels.