Handling keyboard events

[rotolino]

I can't get a notification when the ESC key is pressed. I've tried setting a breakpoint in ClientHandler::HandleKeyEvent but I can't make it work.
I've set multi_threaded_message_loop = true; my browser loads a flash game.

Thanks in advance.

[magreenblatt]

If the flash game has focus when the ESC key is pressed then there likely isn't any notification to the browser.

[rotolino]

Does CEF handle those events in a separate thread? What's actually the UI thread I can read about on the comments in the source and how many thread are started?
Does CEF expose the thread it creates so I can use SetWindowsHookEx to install a handler?

Thanks!

[magreenblatt]

From cef.h:

Code: Select all

// CEF maintains multiple internal threads that are used for handling different
// types of tasks. The UI thread creates the browser window and is used for all
// interaction with the WebKit rendering engine and V8 JavaScript engine (The
// UI thread will be the same as the main application thread if CefInitialize()
// is called with a CefSettings.multi_threaded_message_loop value of false.) The
// IO thread is used for handling schema and network requests. The FILE thread
// is used for the application cache and other miscellaneous activities.

Does CEF expose the thread it creates so I can use SetWindowsHookEx to install a handler?

You can post tasks to the various threads using the CefPostTask function. SetWindowsHookEx may work -- I haven't tried it myself.

[rotolino]

Thank you, it works perfectly. If anyone is facing the same issue, just call:

hHook = SetWindowsHookEx(WH_KEYBOARD, KeyboardProc2, NULL, GetCurrentThreadId());

in ClientHandler::HandleAfterCreated. This solution is Windows-specific and is only needed when multi_threaded_message_loop is true.

Regards.