Hello,

I am working with the WebView object in WinForms/C# without using the WebControl wrapper component, assigning a Handle directly to the WebView upon creation. The FrmWebViewer class contains a picBox and that is the handle exposed through ViewHandle.

meoEngine = Engine.Create("E-OT4K");
mfrmViewer = new FrmWebViewer("Viewer", mConfiguration, true);
meoWebview = new WebView();
meoWebview.Engine = meoEngine;
meoWebview.Create(mfrmViewer.ViewHandle);

This works perfectly fine UNTIL the page throws a New Windows request from that WebView object. I have followed the example "Handling New Window" in the documentation but this refers to a WPF example that uses the WebControl wrapper component, something I am not using and have no intention to use as I am moving to .NET Core 3 for which it is not compatible.

So I try and assign this passed WebView object to an existing variable:

public void WebViewEventSpawn(object sender, NewWindowEventArgs e)
{
meoWebviewNeo = e.WebView;
meoWebviewNeo.Activate += new EventHandler(WebViewEventActivate);
e.Accepted = true;
}

... AND the existing Browser process jams up and the Activate event is never called. From debugging I can see that the Handle for the created WebView object is 0x0 but it is created from the correct Engine with a populated WindowName and sometimes a Url.

What do I do to actually use this WebView object to continue my workflow? Part of this project is to go Headless and use ThreadRunner, does this suffer the same problem?

I hope I am missing something obvious otherwise I need a way to attach a Windows Control Handle to this WebView without using the WebControl wrapper...

Thank you for the reply - I get the analogy but to extend it further; I have a room (PictureBox) and I have the key (HWND) but the guest (WebView) has no free hands to take the key.

I can only set the Handle for a WebView in the Constructor, however I am not constructing this WebView, it is already constructed when it arrives in the Event Args. In fact, your documentation explicitly says to use this WebView and not create a new one.

I am probably missing something obvious as I am new to C# and it has been many years since I did Win32 coding, but how do I get the Handle for the PictureBox to the passed WebView so that it has a display context? To complete the analogy - how do I free up a hand to give the guest the key to the room that is waiting...

Many Thanks

The nomenclature confused me. I'd assumed (and we know what that makes me) that the Create method was the Constructor, given its name and contrary to the configuration I was already doing on the object before calling Create.

I now understand that what it does is takes an existing, configured but not LIVE WebView and associates the Handle. Or in the analogy, Create is the GiveTheKeyToTheGuest method.

For anyone else who finds this post, the Spawn event becomes:

public void WebViewEventSpawn(object sender, NewWindowEventArgs e)
{
meoWebviewNeo = e.WebView;
meoWebviewNeo.Create(pictureBox1.Handle);
meoWebviewNeo.Activate += new EventHandler(WebViewEventActivate);
e.Accepted = true;
}

Apologies for not seeing the obvious - Many thanks for your patience.