I am not having trouble with my program. I offered this up trying to
point out where many people go wrong with console apps.
Gotten quite a few private messages on this matter and thankfully you
included the list so I can reply to everyone.
On 02/25/2017 02:41 PM, Ch'Gans wrote:
On 26 February 2017 at 06:09, Roland Hughes <rol...@logikalsolutions.com> wrote:
Stupid question, but is this a console app?
I'm asking because this happens with console apps. It can happen with any
app, but console apps tend to have the problem most often. Here is what I
mean:
#include <QCoreApplication>
#include <QDebug>
#include <QTimer>
#include "consoleinput.h"
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
ConsoleInput console;
bool b = a.connect(&console, &ConsoleInput::quit, &a,
&QCoreApplication::quit);
qDebug() << "result of connect " << b;
QTimer::singleShot(0, &console, &ConsoleInput::run);
return a.exec();
}
If you do not use a QTimer to launch the console input method so it runs
from within the exec() loop, i.e. replace the QTimer line with
console.run();
Your connect call will return true but the signal will never trigger the
slot because execution is occurring outside of an event loop.
connect() returns true, simply means that the connection has been
made, if your concole.run() doesn't run an event loop no signal/slot
will work AFAIK.
Put a break point in ConsoleInput::quit() and check the call stack
with the debugger to understand how this works.
Chris
--
Roland Hughes, President
Logikal Solutions
http://www.theminimumyouneedtoknow.com
http://www.infiniteexposure.net
http://www.johnsmith-book.com
http://www.logikalblog.com
http://www.interestingauthors.com/blog
http://lesedi.us/
_______________________________________________
Interest mailing list
Interest@qt-project.org
http://lists.qt-project.org/mailman/listinfo/interest
--
Roland Hughes, President
Logikal Solutions
(630)-205-1593
http://www.theminimumyouneedtoknow.com
http://www.infiniteexposure.net
http://www.johnsmith-book.com
http://www.logikalblog.com
http://www.interestingauthors.com/blog
http://lesedi.us/
_______________________________________________
Interest mailing list
Interest@qt-project.org
http://lists.qt-project.org/mailman/listinfo/interest
