Cannot create object of QNetworkAccessManager

YamiTheWitch

I am using QT 6.9.0 and am on windows with MSVC2022.

I can include QNetworkAccessManager with:

#include <QtNetwork/QNetworkAccessManager>

And I can declare a variable just fine:

QNetworkAccessManager* manager;

However when trying to call in my application constructor:

manager = new QNetworkAccessManager(this);

I get a bunch of linking errors.

Is there any common known issue with QNetworkAccessManager on Windows or do I need to configure something to make this work?

Christian Ehrlicher

@YamiTheWitch said in Cannot create object of QNetworkAccessManager:

I get a bunch of linking errors

You must also link against the network library.

jsulm

@YamiTheWitch Did you modify your pro or CMakeLists.txt file like shown in https://doc.qt.io/qt-6/qnetworkaccessmanager.html ?
Also, then you say you get errors you should also post them, else nobody knows what errors you get.

YamiTheWitch

@jsulm

jsulm

@YamiTheWitch What about my question?

YamiTheWitch

@jsulm Oh, adding the cmake lines worked, thanks! Doesn't Qt automatically change the cmake file? Or is that only on project creation? Also I would have loved to reply quicker but there is a 10 minute cooldown for members that don't have at least 1 reputation point.

jsulm

@YamiTheWitch said in Cannot create object of QNetworkAccessManager:

Doesn't Qt automatically change the cmake file?

Qt is a C++ framework.
QtCreator would be responsible for the build tools. But it would have to parse your code to figure out what modules you're using to and them to CMakeLists.txt file then.