naps2/NAPS2.Lib.WinForms/Platform/Windows/Win32Window.cs

using System.Windows.Forms;

namespace NAPS2.Platform.Windows;

/// <summary>
/// A trivial implementation of IWin32Window for use when serializing window handles cross-process.
/// </summary>
public class Win32Window : IWin32Window
{
    public Win32Window(IntPtr hwnd)
    {
        Handle = hwnd;
    }

    public IntPtr Handle { get; }
}

public static class Win32WindowExtensions
{
    public static IntPtr SafeHandle(this IWin32Window window)
    {
        if (window is Form form)
        {
            IntPtr hwnd = IntPtr.Zero;
            form.Invoke(new Action(() => hwnd = window.Handle));
            return hwnd;
        }
        return window.Handle;
    }
}