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# Abstract Widget Classes

These classes are abstract widgets; they are generally not usable in themselves, but provide functionality that can be used by inheriting these classes.

QAbstractButton | The QAbstractButton class is the abstract base class of button widgets, providing functionality common to buttons.
QAbstractScrollArea | The QAbstractScrollArea widget provides a scrolling area with on-demand scroll bars.
QAbstractSlider | The QAbstractSlider class provides an integer value within a range.
QAbstractSpinBox | The QAbstractSpinBox class provides a spinbox and a line edit to display values.
QDialog | The QDialog class is the base class of dialog windows.
QFrame | The QFrame class is the base class of widgets that can have a frame.