Chromium Embedded Framework Forum

by **ScottKevill** » Tue Oct 16, 2012 1:38 pm

Hopefully I'm missing something really obvious, but when I call CefFrame::LoadString(string_val, url), it seems to ignore the string_val and do the equivalent of LoadURL(url)

First I tried this below, but the "about:blank" seems to get queued after OnAfterCreate returns.

Code: Select all: Creating the browser: CefBrowserHost::CreateBrowser(info, handler.get(), "about:blank", settings); OnAfterCreate: browser->GetMainFrame()->LoadString("<html><body>Hello World!</body></html>", "http://www.google.com");

Having read this thread, I also tried this below, but it simply loaded the about:blank page and immediately loaded Google afterwards.

Code: Select all: Creating the browser: CefBrowserHost::CreateBrowser(info, handler.get(), "", settings); OnAfterCreate: browser->GetMainFrame()->LoadURL("about:blank"); browser->GetMainFrame()->LoadString("<html><body>Hello World!</body></html>", "http://www.google.com");

Do I need to be creating a resource handler as well to intercept this? If so, then how does LoadString() make things simpler than LoadURL() if I need a resource handler anyway?

This is CEF 3.1180.823 with the Windows binaries.

Thanks.

by **nvine** » Wed Oct 17, 2012 1:29 am

Actually I ran into similar problem, calling LoadString() was trying to load the URL instead of setting the string. I wanted to display a message in OnLoadError() and when I used LoadString() in OnLoadError() callback, I got the error callback again and the string wasn't set. The workaround I have now is to execute js and set the required string. Is this a bug in Cef3?

by **ScottKevill** » Wed Oct 17, 2012 1:49 pm

I don't know if this affects CEF 1 as well, but I've just done a bunch of testing and the Mac OS X binaries of CEF 3 also cause this to happen. This time I made modifications to the cefclient sample to do my testing.

A whole heap of trial and error later... LoadURL("about:blank") is insufficient for LoadString() to work. Perhaps due to some kind of special case.

Anything else that triggers a request will work. eg. LoadURL(":") or LoadURL("dummy:"). This will end up calling OnLoadError, of course, but that can be ignored there.

This also works from the original CreateBrowser so that LoadURL isn't needed in OnAfterCreated.

In summary, very confusing behaviour, but this works:

Code: Select all: Creating the browser: CefBrowserHost::CreateBrowser(info, handler.get(), "dummy:", settings); OnAfterCreated: browser->GetMainFrame()->LoadString("<html><body>Hello World!</body></html>", "http://www.google.com");

by **magreenblatt** » Wed Oct 17, 2012 2:00 pm

We should identify why "about:blank" isn't sufficient and, if possible, fix it. Please add an issue to the CEF issue tracker.

by **ScottKevill** » Wed Oct 17, 2012 11:03 pm

Done: Issue 763

Chromium Embedded Framework Forum

LoadString() ignoring string_value?

LoadString() ignoring string_value?

Re: LoadString() ignoring string_value?

Re: LoadString() ignoring string_value?

Re: LoadString() ignoring string_value?

Re: LoadString() ignoring string_value?

Who is online