The difference between Core and GUI and Widget and QtWidgets

[rezas1000]

Hello

What is the difference between Core and GUI, and QtWidgets?
thanks.

[anda_skoa]

QtCore is the module that provides core infrastructure for Qt, it does not have any dependencies on UI resources, it can be used for server and service type programs.

QtGui is the module that provides the main UI integration, the module that loads the QPA (Qt platform abstraction) plugin and provides access to windows, drawing buffers and OpenGL (on platforms that support it).

QtWidgets is one of the UI modules that use the functionalities provided by QtCore and QtGui to high level UI components such as buttons, etc.

Cheers,
_