Problem using QtConcurrent with members fuctions
Hello every one!
I'm using QtConcurrent to load a file in other thread:
Code:
struct tipoRegistro {
qint16 val1;
qint16 val2 ;
qint16 val3;
};
tipoRegistro MainWindow::readFileStepByStep()
{
file.read(reinterpret_cast<char*> (®),sizeof(tipoRegistro));
return reg;
}
void MainWindow::qtConcurrentTest()
{
QVector<tipoRegistro> vector;
tipoRegistro treg;
treg.val1 = -1;
treg.val2 = -1;
treg.val3 = -1;
for(int i = 0; i < num_muestras_canal; i++)
vector.append(treg);
dialog.
setLabelText(QString("Cargando archivo ECG"));
QFutureWatcher<void> futureWatcher;
QObject::connect(&futureWatcher,
SIGNAL(finished
()),
&dialog,
SLOT(reset
()));
QObject::connect(&dialog,
SIGNAL(canceled
()),
&futureWatcher,
SLOT(cancel
()));
QObject::connect(&futureWatcher,
SIGNAL(progressRangeChanged
(int,
int)),
&dialog,
SLOT(setRange
(int,
int)));
QObject::connect(&futureWatcher,
SIGNAL(progressValueChanged
(int)),
&dialog,
SLOT(setValue
(int)));
futureWatcher.setFuture(QtConcurrent::mapped(vector,readFileStepByStep));
dialog.exec();
futureWatcher.waitForFinished();
}
I get the fallowing error:
Quote:
../ECGReader/mainwindow.cpp: In member function 'void MainWindow::qtConcurrentTest()':
../ECGReader/mainwindow.cpp:264:75: error: no matching function for call to 'mapped(QVector<tipoRegistro>&, <unresolved overloaded function type>)'
../ECGReader/mainwindow.cpp:264:75: note: candidates are:
/usr/include/qt4/QtCore/qtconcurrentmap.h:181:74: note: QFuture<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType> QtConcurrent::mapped(const Sequence&, MapFunctor) [with Sequence = QVector<tipoRegistro>, MapFunctor = tipoRegistro (MainWindow::*)(), typename QtPrivate::MapResultType<void, MapFunctor>::ResultType = void]
/usr/include/qt4/QtCore/qtconcurrentmap.h:181:74: note: no known conversion for argument 2 from '<unresolved overloaded function type>' to 'tipoRegistro (MainWindow::*)()'
/usr/include/qt4/QtCore/qtconcurrentmap.h:188:74: note: template<class Iterator, class MapFunctor> QFuture<typename QtPrivate::MapResultType<void, MapFunctor>::ResultType> QtConcurrent::mapped(Iterator, Iterator, MapFunctor)
I think the problem can be using members fuction, but i tried modifying the line tis way:
Quote:
futureWatcher.setFuture(QtConcurrent::mapped(vecto r, &MainWindow::readFileStepByStep));
but I keep getting errors
If anyone can help...thanks in advanced.
Regards.
pd: Sorry my english
Re: Problem using QtConcurrent with members fuctions
