QtConcurrent number of arguments error

Question

I have a QMainWindow class.

class MainWindow: public QMainWindow
{
Q_OBJECT
    ...
public:
    void insertVector();
    ...
};

and I have class SqlStorage to make operation with Data Base.

class SqlStorage : public QObject {
Q_OBJECT
    ...
public:
    static void loadSQL();
    ...
};

In insertVector() method I try to asynchronously write in DB.

void MainWindow::insertVector()
{
    SqlStorage* _sqlStorage = new SqlStorage;
    QFuture<void> future = QtConcurrent::run(_sqlStorage, &SqlStorage::loadSQL);
}

But when I try to compile, I have error that: "term does not evaluate to a function taking 1 arguments".

Where is my problem?

thuga · Answer 1 · 2014-10-01T14:11:24.190

4

When you want to call static member functions with QtConcurrent::run, you do it the same way you call a regular non-member function. Only difference is you include the class scope in it. Like this:

QFuture<void> future = QtConcurrent::run(SqlStorage::loadSQL);

edited Oct 01 '14 at 14:11

answered Oct 01 '14 at 13:30

thuga

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I try your code, but also have a error on complation (error C2064: term does not evaluate to a function taking 1 arguments) – koch_kir Oct 01 '14 at 13:42
Ok. I did it. Also, when I add arguments to this function, I have similar error. – koch_kir Oct 01 '14 at 14:06
@koch_kir I noticed your function is static, I updated my answer. – thuga Oct 01 '14 at 14:06

QtConcurrent number of arguments error

1 Answers1