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This article mainly introduces "what are the functions of the QObject class of Qt". In the daily operation, I believe that many people have doubts about the functions of the QObject class of Qt. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful to answer the questions of "what are the functions of the QObject class of Qt?" Next, please follow the editor to study!

Qt (pronounced "cute" instead of "cu-tee") is a cross-platform framework that is often used as a graphical toolkit and is useful not only in creating CLI applications. It can also run on the ports of the three main desktop operating systems and mobile operating systems (such as Symbian,Nokia Belle,Meego Harmattan,MeeGo or BB10) and embedded devices, Android (Necessitas) and iOS.

QObject is the most basic class in Qt. Most classes in Qt are derived from. QObject provides some very powerful features, such as:

Object name: you can set the name (string) for the object, and then search for the object by name.

Subsystem (described in the following sections)

Signals and slots (described in the next chapter)

Event management

Widgets can respond to events and use subsystems as well as signal and slot mechanisms. All widgets inherit from QObject. The most basic widget is QWidget. QWidget contains most of the properties used to describe a window or widget, such as location and size, mouse cursor, tooltips, and so on.

Note: in Qt, widgets can also be windows. In the previous section, we showed a button, which is a widget, but it appears directly as a window. The "QWindow" class is not required.

Almost all graphic elements inherit from QWidget. We can enumerate, for example:

QAbstractButton, the base class QPushButton QCheckBox QRadioButton for all button types. QFrame, display frame QLabel, display text or picture

This subclass is designed to facilitate attribute management. Shared properties such as size and cursor can be used on other graphical components, and QAbstractButton provides basic properties shared by all buttons.

At this point, the study on "what are the functions of the QObject class of Qt" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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