how to run a membber function with QtConcurrrent Qt6? type 'decay_t cannot be used prior to '::' because it has no members)

i'm trying to run a member function but but i got an error , help me please

i tried with this line of code

QFuture<qlonglong> future = QtConcurrent::run(this,&backD::analysa);

and analysa() is a methode that returns a qlonglong

Try QtConcurrent::run([this]{ return analysa(); }); or QtConcurrent::run([this] -> qlonglong { return analysa(); });, whichever compiles in your case.