Hands-On GUI Programming with C++ and Qt5

Modules, configurations, and definitions

You can add different Qt modules, configuration options, and definitions to your project. Let's take a look at how we can achieve these. To add additional modules, you simply add the module keyword behind QT +=, like so:

QT += core gui sql printsupport charts multimedia 

Or you can also add in a condition in front to determine when to add a specific module to your project:

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets 

You can also add configuration settings to your project. For example, we want to specifically ask the compiler to follow the 2011 version of the C++ specifications (known as C++11) when compiling our project, as well as making it a multithreaded application:

CONFIG += qt c++11 thread ...