Problem with IWin32Windows = owned window of BrowserWindow(this)´;

[ghost]

Hello guys,
I am trying to assign to electron's current main window if I open MessageBox.Show(wintarget, ....);

My code is EdgeTest.Startup.cs:

using System.Collections.Generic;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace EdgeTest
{
public class Startup
{
public async Task Invoke(dynamic input)
{
var payload = (IDictionary<string, object>)input;
var winTarget = (IWin32Window)payload["winTarget"];
return await TargetWin(winTarget);
}

    private async Task<object> TargetWin(IWin32Window ownedWin)
    {
        MessageBox.Show(
            ownedWin,
            "Hello it is an example message!",
            "From NodeJS",
            MessageBoxButtons.OK,
            MessageBoxIcon.Information
            );
        return null;
    }
}

}

And I add function link to open MessageBox while BrowserWindow of electron still opened.
Before I have created MessageBox without owner of current window. It works fine. But I wish MessageBox should "embed" to BrowserWindow of electron with edge.JS

<title>Hello World!</title>

Hello World!

We are using Node.js <script>document.write(process.versions.node)</script>, Chromium <script>document.write(process.versions.chrome)</script>, and Electron <script>document.write(process.versions.electron)</script>. link text <script> const {spawn} = require('child_process'); const {app, BrowserWindow} = require('electron'); var edge = require('electron-edge'); function MyFunction(){ var messagebox = edge.func('EdgeTest.dll'); // My dll was compiled by VS 2017 Community let win = new BrowserWindow(this); // I don't know if it is current window of electron application var input = {winTarget : win}; messagebox(input, function (error, result) { if (error) throw error; console.log(result); }); } </script <script> // You can also require other files to run in this process require('./renderer.js') </script>

But it doesn't show messagebox because it doesn't recognize if it gets wrong or wrong owner of window?
How do I fix? Or Is it bugged? If you try without targetwin and Use "IWin32Window owner; and MessageBox.Show(owner, ....);
than "var messagebox = edge.func( "Javascript", .... ) than it works fine but problem with owner of current window. Sorry for bad English.