If so, please post a working solution to the problem.
If you have read other posts in this forum, you will understand that we aren't contractors who write your code for you. And typically, you don't get very good answers when you simply post something like "QWidget:: setCursor() does not do the job". Our response will amost always be "Why not? What have you tried?"

You also asked:

How it can be done in Qt?
and I pointed you to the Qt documentation that I thought discussed the problem you might be having, and I suggested ways you might work around it.

So the next thing for you to do is to post your non-working code and hopefully someone here will see why it isn't working and can help you fix it.