you never return to the event loop when you do show
(because of waitForFinished
) and you never continue to the processing code when you do exec
instead of the waitForFinished
you should connect to the finished
signal and handle it there and use a single shot timer that will cancel it:
void BTConnect::on_BTscanFinished()//new slot
{
//Clear the list widget
this->ui->listWidget->clear();
//Read the command line output and store it in QString out
QString out(BTscan_Process.readAllStandardOutput());
//Split the QString every new line and save theve in a QStringList
QStringList OutSplit = out.split("\n");
//Parse the QStringList in btCellsParser
btCellsParser cp(OutSplit);
for(unsigned int i = 0; i<cp.count(); i++)
{
//writing in listwidget
}
ScanDialogClose();
}
void BTConnect::ScanBTDevices()
{
ScanDialogShow();
//Command to scan nearby bluetooth devices
//"hcitool scan"
QString cmd("hcitool scan");
//start the process
connect(BTscan_Process, SIGNAL(finished()), this, SLOT(on_BTscanFinished()));
BTscan_Process.start(cmd);
QTimer::singleShot(20000, scan, SLOT(close()));
}