QDragEnterEvent Class
The QDragEnterEvent class provides an event which is sent to a widget when a drag and drop action enters it. 更多...
| 头文件: | #include <QDragEnterEvent> |
| qmake: | QT += gui |
| 基类: | QDragMoveEvent |
公有函数
| QDragEnterEvent(const QPoint &point, Qt::DropActions actions, const QMimeData *data, Qt::MouseButtons buttons, Qt::KeyboardModifiers modifiers) |
- 5 个公有函数继承自 QDragMoveEvent
- 11 个公有函数继承自 QDropEvent
- 6 个公有函数继承自 QEvent
其他继承的成员
详细描述
The QDragEnterEvent class provides an event which is sent to a widget when a drag and drop action enters it.
A widget must accept this event in order to receive the drag move events that are sent while the drag and drop action is in progress. The drag enter event is always immediately followed by a drag move event.
QDragEnterEvent inherits most of its functionality from QDragMoveEvent, which in turn inherits most of its functionality from QDropEvent.
参见 QDragLeaveEvent, QDragMoveEvent, and QDropEvent.
成员函数
QDragEnterEvent::QDragEnterEvent(const QPoint &point, Qt::DropActions actions, const QMimeData *data, Qt::MouseButtons buttons, Qt::KeyboardModifiers modifiers)
Constructs a QDragEnterEvent that represents a drag entering a widget at the given point with mouse and keyboard states specified by buttons and modifiers.
The drag data is passed as MIME-encoded information in data, and the specified actions describe the possible types of drag and drop operation that can be performed.
Warning: Do not create a QDragEnterEvent yourself since these objects rely on Qt's internal state.