Hi Jean,
From: Nuno Santos <nunosan...@imaginando.pt>
To: Jean-Michaël Celerier <jeanmichael.celer...@gmail.com>
Cc: Qt Project MailingList <interest@qt-project.org>
Sent: 7/25/2018 12:59 PM
Subject: Re: [Interest] App crashing because of ImageProvider when exiting
Jean,
This is the main context. It will not get out until app.exec() terminates.
That’s why I’m connecting to aboutToQuit signal in order to remove the provider
from the Qml engine.
Since the engine takes ownership you don't need to remove the image provider in
your case, since you're not adding/removing providers dynamically during
runtime.
I had the provider instantiated inside the controller but I was having this
problem already, therefore my efforts in getting it fixed.
QQmlApplicationEngine *e;
int main(int argc, char *argv[])
{
QGuiApplication app(argc, argv);
Controller controller;
QQmlApplicationEngine engine;
e = &engine;
engine.rootContext()->setContextProperty("controller", &controller);
engine.load(QUrl(QStringLiteral("qrc:/qml/main.qml")));
ImageProvider imageProvider;
engine.addImageProvider("pictures", &imageProvider);
QObject::connect(&app, &QGuiApplication::aboutToQuit, [=]()
{
e->removeImageProvider("pictures");
});
return app.exec();
}
Any ideas?
Regards,
Nuno
On 25 Jul 2018, at 11:30, Jean-Michaël Celerier
<jeanmichael.celer...@gmail.com> wrote:
Shouldn't you allocate your ImageProvider on the heap or at least ensure that
it survives during the whole execution ? here it will be deleted by the end of
your function
-------Jean-Michaël Celerier
http://www.jcelerier.name
On Wed, Jul 25, 2018 at 11:24 AM, Nuno Santos <nunosan...@imaginando.pt> wrote:
Hi,
Yesterday I have used for the first time a QQuickImageProvider but I’m having
problems because now the app crashes when I terminate it.
Tried to do the following in order to avoid the crash but it is crashing anyway:
ImageProvider imageProvider;
engine.addImageProvider("pictures", &imageProvider);
QObject::connect(&app, &QGuiApplication::aboutToQuit, [=]()
{
e->removeImageProvider("pictures");
});
The crash is always something like this:
malloc: *** error for object 0x7ffeef34e900: pointer being freed was not
allocated
Does anyone knows how to fix this?
Thanks!
Regards,
Nuno
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http://lists.qt-project.org/mailman/listinfo/interest
_______________________________________________
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