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Questions - qfuture

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()...
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Aquiles

c++

multithreading

qt

qtconcurrent

qfuture

Votes: 0

Answers: 2

Latest Answer

Try QtConcurrent::run([this]{ return analysa(); }); or QtConcurrent::run([this] -> qlonglong { return analysa(); });, whichever compiles in your case.
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Cannot take the address of an rvalue of type &#39;qlonglong&#39; (aka &#39;long long&#39;)

I get this error while trying to use QtConcurrent: Cannot take the address of an rvalue of type 'qlonglong' (aka 'long long') I'm trying to compute the size of a folder. I made a method that returns...
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user18597487

c++

multithreading

qt

qtconcurrent

qfuture

Votes: 0

Answers: 1

Latest Answer

You are trying to call analysa() and then take the address of its return value. You need to instead take the address of analysa itself. To do that, simply remove the parenthesis from it: QFuture<q...
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Remy Lebeau

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