QWebView won't load file from qrc resource

andreyc

I looked at QUrl source code.
It does not support qrc: prefix.
A solution could be to copy index.html from the resource to a temporary file and then use QUrl::fromLocalFile("file://temp_path/index.html");

elkvis

I wouldn't really consider that a solution. The web view has to load additional resources (css, js, images), based on the content of the html, and I'd have to literally copy everything to the temp folder. Once this project starts to get big, that's simply not an option.

andreyc

I agree with you. It is not convenient. But I don't see the other way.

I see two issues with putting all html related files as the resources:

When you put all html, js, etc files in the executable file as the resources, how are you going to manage the links inside these html, js, etc files?

If you will put a lot of resources in the executable file it will make the file big and relatively slow to load.

elkvis

can you suggest alternatives, so that the content of my app isn't just sitting there on the user's computer to manipulate as they please?

andreyc

I think Qt assistant maybe a good example. Take a look on how they provide and show bunch of html files.

Or something simple like this

Extract all files to OS dependent cache directory on first run or after installation
@
QString cacheDir =
QStandardPaths::writableLocation(QStandardPaths::CacheLocation);
@
Load the files from the cache directory
Provide checksum for the files if you need to protect an app from loading the modified files.

elkvis

Thanks for the suggestion. I used exactly what you suggested (except TempLocation instead of CacheLocation), and recursively copied the contents of the resources to the destination folder. Everything works, and files are deleted automatically on program exit on my target platform (linux).

andreyc

Glad it works for you.
Could you please prepend "[SOLVED]" to the title of your post. It will help other good people to find your solution.

olgii10

If you're reading from a .qrc resource file you have to run qmake ("Build->Run qmake" in Qt Creator) before it will be available.

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Donald Duck

For me, using the qrc:/ protocol (qrc:/html/index.html) along with cleaning the project and running qmake worked. But it didn't work by simply using :/html/index.html or before cleaning the project and running qmake.