How to pass arguments to QWebEngine?

[Denjas]

I am trying to pass certain Command line arguments to my QWebEngineView browser. After some research it seems there is no straight-forward way to do this, but I did find you can use the "QTWEBENGINE_CHROMIUM_FLAGS" environment variable. But some of the flags I'm passing to it doesn't seem to work, I am doing it like this:

qputenv("QTWEBENGINE_CHROMIUM_FLAGS", "--disable-logging --ppapi-flash-path=C:\Example\pepflashplayer.dll");

The --disable-logging seems to work, but some other flags doesn't seem to work, including the --ppapi-flash-path. I've also tried setting the --ppapi-flash-version flag, but it still just uses whatever version is installed in the default flash directory.

I am not sure why those don't work, or if there's a better way to pass the command line arguments?

[JonB]

@Denjas

The --disable-logging seems to work, but some other flags doesn't seem to work, including the --ppapi-flash-path

"--disable-logging --ppapi-flash-path=C:\Example\pepflashplayer.dll"

I realise that path is an example, but if you have actually typed \s and not \\s in a C++ literal string, it won't pass the path you expect and perhaps chromium then sticks to its default directory?

[Denjas]

@JonB I actually do have \\ in the path in my code, but that doesn't work either unfortunately.

And even if I set --ppapi-flash-version to some other version than the one I have installed, it still loads the default version even though it then shouldn't be able to load the plugin.

[juri.valdmann]

@Denjas Do you have spaces in the path? There's currently a bug with that as the environment variable is split on space characters without proper quoting (https://codereview.qt-project.org/243605). If you pass the arguments on the command line, without setting the environment variable, then it should be parsed correctly though.