interop::GetWindowFromWindowId function (microsoft.ui.interop.h)
Gets the window handle (HWND) that corresponds to the specified WindowId, if the windowId argument is valid and the system has an HWND that represents the window.
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 GetWindowFromWindowId(
::ABI::Microsoft::UI::WindowId windowId,
HWND *hwnd
) noexcept;
Parameters
windowId
Type: WindowId
The identifier for the window.
hwnd
Type: HWND
The window handle that corresponds to windowId, if windowId is valid and the system has an HWND that represents the window. 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 |