Computer Vision with OpenCV 3 and Qt5

Help mode

Use the Help button on the left to switch to the Help mode of Qt Creator:

The most important thing about the Qt Creator Help mode, other than the fact that you can literally search for everything related to Qt and see countless examples for every class and module, is the fact that you must use it in order to find out the correct module required for each class. To do it, just switch to the index mode and search for a Qt class that you want to use in your applications. Here's an example:

As you can see, QMessageBox class's documentation ...