When Focus is set to CEF browser, Keyboard Event is lost

[shanmuganathan]

When the browser control has the focus, any keys being pressed seem to be eaten by the browser control, why ?

Certain support post recommends to switch off "multi_threaded_message_loop" , but i cannot do that.

Let me know how to handle browser events with a example.

I am using latest CEF binary file "cef_binary_3.3112.1659" in Visual Studio 2013 environment.
(http://opensource.spotify.com/cefbuilds/index.html)

sample.png (44.01 KiB) Viewed 11793 times

[magreenblatt]

What OS? Does the problem reproduce with cefclient when running with the "--multi-threaded-message-loop" command-line flag?

[skocef]

I had exactly same problem in my Windows app. Also with multi_threaded_message_loop=true. I ended up catching keyboard events with OnPreKeyEvent and forwarding them to main frame. But I needed only F-keys.

[skocef]

shanmuganathan, could you take a look on thishttp://www.magpcss.org/ceforum/viewtopic.php?f=6&t=15424.
Have you tried to open/close browser windows in your application quickly? Looks like the problem happens only with multi_threaded_message_loop set to ON.

[cretz]

Just to add my experience here, I too capture the events and forward 'em myself. See here for Linux and here for Windows.

[shanmuganathan]

What OS? Does the problem reproduce with cefclient when running with the "--multi-threaded-message-loop" command-line flag?

I tried in Windows 7 & Windows 10, yes it replicates even in CEf Client.

[shanmuganathan]

I had exactly same problem in my Windows app. Also with multi_threaded_message_loop=true. I ended up catching keyboard events with OnPreKeyEvent and forwarding them to main frame. But I needed only F-keys.

Thanks for the reply. I tried "OnPreKeyEvent" and didn't receive any messages even in that function.
It would be great if you could share a sample, so i can cross check if anything i have missed in my implementation.