QPushButton

QPushButton is a fundamental widget in the Qt application framework, used to create clickable buttons. It provides a visual element that users can interact with to trigger specific actions within an application. When a QPushButton is clicked, it emits a signal that can be connected to a slot in the application's code, allowing developers to define the behavior associated with that button press.

The appearance of a QPushButton can be customized through stylesheets or by setting various properties. These properties include the button's text, its icon, its size, and its enabled/disabled state. By default, QPushButton displays text, but it can also be configured to show an icon or both. The widget's visual feedback during interaction, such as a change in appearance when pressed or hovered over, is handled automatically by Qt.

QPushButton is a versatile component and is frequently used for common user interface elements like submitting forms, opening dialogs, navigating between screens, or performing any action that requires direct user initiation. Its ease of use and integration with Qt's signal and slot mechanism make it a cornerstone for building interactive graphical user interfaces.