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

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Gets the WindowId that corresponds to the specified hwnd, if the provided HWND is valid.

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

winrt::Microsoft::UI::WindowId GetWindowIdFromWindow(
  const HWND & hwnd
);

Parameters

hwnd

Type: const HWND &

The handle of the window for which to get the WindowId.

Return value

Type: WindowId

The identifier that corresponds to the specified hwnd, if the provided hwnd is valid. 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