Need to propagate "Tab" button click to parent form

[assopri]

Hi! Using Chromium Win Forms (last version available at Nuget). Found that browser is "eating" keyboard input, preventing main form keydown event handler to be hooked. In general thats ok, however I need to change this behaviour for "Tab" button (when clicking it I need to send focus from browser to another control on my form). At the same time, the rest of key input should be processed by chromium as it is now.

I suppose, I should somehow implement the interface IKeyboardHandler and connect it to the ChromiumWebBrowser.KeyboardHandler property, and return true on any keypress in both OnKeyEvent() and OnPreKeyEvent(). Tried this example https://github.com/cefsharp/CefSharp/blob/master/CefSharp.WinForms.Example/Handlers/KeyboardHandler.cs , but it doesnt work out of the box. Basically I tried to change it a little bit to process TAB in OnPreKeyEvent. In this case it avoids browser to process it, however further the event is not propagated to parent form keydown

[amaitland]

Tab button click? Do you mean tab key press?

If you need to focus the next control then you should be able to cast IWebBrowser to ChromiumWebBrowser and call https://docs.microsoft.com/en-us/dotnet/api/system.windows.forms.control.selectnextcontrol?view=windowsdesktop-6.0