interop::GetWindowIdFromWindow function (microsoft.ui.interop.h)
Gets the WindowId that corresponds to the specified window handle (HWND), if the hwnd argument is valid.
Note
The microsoft.ui.interop.h header has a dependency on microsoft.ui.h, which is not shipped as part of the Windows App SDK. You can run the MIDL compiler (midl.exe) on Microsoft.UI.idl in order to generate microsoft.ui.h. Or just use the functions in the winrt/Microsoft.ui.interop.h header instead.
C#. For C# desktop application developers, the interop functions in this header are wrapped by the methods of the Microsoft.UI.Win32Interop class.
Syntax
HRESULT GetWindowIdFromWindow(
HWND hwnd,
::ABI::Microsoft::UI::WindowId *windowId
) noexcept;
Parameters
hwnd
Type: HWND
The handle of the window for which to get the WindowId.
windowId
Type: WindowId
The identifier that corresponds to hwnd, if hwnd is valid. Otherwise, null.
Return value
Type: HRESULT
Returns S_OK if the function succeeds. Otherwise, returns a value that indicates the error.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 10, version 1809 (with Windows App SDK 1.0 or later) |
| Header | microsoft.ui.interop.h |