interop::GetWindowFromWindowId function (winrt-microsoft.ui.interop.h)

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Gets the window handle that corresponds to the specified windowId, if the provided windowId is valid and the system has an HWND that represents the window.

Note

This API is declare in the Microsoft.UI.Interop.h header file that's in the Windows App SDK's \include\winrt folder.

C#. For C# desktop application developers, the interop functions in this header are wrapped by the methods of the Microsoft.UI.Win32Interop class.

Syntax

HWND GetWindowFromWindowId(
  const winrt::Microsoft::UI::WindowId & windowId
);

Parameters

windowId

Type: const WindowId &

The identifier for the window.

Return value

Type: HWND

The window handle that corresponds to the specified windowId, if the provided windowId is valid and the system has an HWND that represents the window. Otherwise, null.

Requirements

Requirement Value
Minimum supported client Windows 10, version 1809 (with Windows App SDK 1.0 or later)
Header winrt-microsoft.ui.interop.h

See also

Manage app windows