is it possible to send keyboard events to the main form?

[arcanisgk]

I'd like to avoid having to implement the IKeyboardHandler interface, to handle my keyboard events.
this is an example of what I have for keyboard shortcuts:

private void Form1_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.Modifiers == Keys.Control)
            {
                switch (e.KeyCode)
                {
                    case Keys.F12:
                        //Comando 1
                        break;
                    case Keys.N:
                        //Comando 2 nueva ventana
                        break;
                }
            }
        }

and in this way I initialize the control for the browser:

public void InitializeChromium(string Url)
        {
            CefSettings settings = new CefSettings();
            Cefinit = Cef.Initialize(settings);
            BrowserControl = new ChromiumWebBrowser(Url)
            {
                Name = "WebBrowser",
                MenuHandler = new SearchContextMenuHandler(this),
                DownloadHandler = new DownloadHandler(download_img)
            };
            Controls.Add(BrowserControl);
        }

but once the control has the focus there is no way that the form receives the keyboard shortcuts for example: ctrl + N:
is there a way to redirect these events to the main form?
or best way:
is there a keyboard event lock, how can it be removed ?

[amaitland]

Integrate CEF into your apps existing message loop message loop see https://github.com/cefsharp/CefSharp/wiki/General-Usage#multithreadedmessageloop

Or implement IKeyboardHandler (for simple cases this is preferable)

is there a keyboard event lock, how can it be removed ?

What exactly is a keyboard event lock?

[arcanisgk]

I have tried to implement IKeyboardHandler, but I cannot catch the key combination events, as simple as a Ctrl + F12, using my event capture code, I have tried to follow this example:

https://github.com/cefsharp/CefSharp/blob/master/CefSharp.WinForms.Example/Handlers/KeyboardHandler.cs

I do not have access to: object sender, KeyEventArgs e and I can't find in the documentation where it says how to get these data / objects.

[amaitland]

I do not have access to: object sender, KeyEventArgs e and I can't find in the documentation where it says how to get these data / objects.

Your implying it's a WinForms event which is incorrect. You'll need to parse the low level key messages, check the modifier and windows key code.

https://docs.microsoft.com/en-us/windows/win32/inputdev/virtual-key-codes

[arcanisgk]

ok, i think this will take a long time. :(

[amaitland]

You can cast IWebBrowser to ChromiumWebBrowser and access the WinForms UI, making sure to marshal onto the WinForms UI thread to using BeginInvoke.

Past that it's just a matter of some simple if checks or a switch statement. Might look roughly something like the following

browser.KeyboardHandler = new KeyboardHandler();
public class KeyboardHandler : IKeyboardHandler
    {
        public bool OnKeyEvent(IWebBrowser browserControl, IBrowser browser, KeyType type, int windowsKeyCode, int nativeKeyCode, CefEventFlags modifiers, bool isSystemKey)
        {
            if (type == KeyType.KeyUp && Enum.IsDefined(typeof(Keys), windowsKeyCode))
            {
                var key = (Keys)windowsKeyCode;
                switch (key)
                {
                    case Keys.F5:
                        browser.Reload(true);
                        break;
                    case Keys.F12:
                        browser.ShowDevTools();
                        break;
                }
            }
            return false;
        }
}

Making sure to implement both methods of the IKeyboardHandler

[arcanisgk]

thanks i will try this.