The QDropEvent class provides an event which is sent when a drag and drop action is completed. 更多...
继承 QEvent and QMimeSource .
Inherited by QDragMoveEvent .
The QDropEvent class provides an event which is sent when a drag and drop action is completed.
当 Widget accepts drop events , it will receive this event if it has accepted the most recent QDragEnterEvent or QDragMoveEvent 发送给它的。
掉落事件包含提议动作，可获取自 proposedAction (), for the widget to either accept or ignore. If the action can be handled by the widget, you should call the acceptProposedAction () function. Since the proposed action can be a combination of Qt.DropAction values, it may be useful to either select one of these values as a default action or ask the user to select their preferred action.
If the proposed drop action is not suitable, perhaps because your custom widget does not support that action, you can replace it with any of the possible drop actions 通过调用 setDropAction () with your preferred action. If you set a value that is not present in the bitwise OR combination of values returned by possibleActions (), the default copy action will be used. Once a replacement drop action has been set, call accept() instead of acceptProposedAction () to complete the drop operation.
mimeData () function provides the data dropped on the widget in a QMimeData object. This contains information about the MIME type of the data in addition to the data itself.
Constructs a drop event of a certain type corresponding to a drop at the point specified by pos in the destination widget's coordinate system.
actions indicate which types of drag and drop operation can be performed, and the drag data is stored as MIME-encoded data in data .
The states of the mouse buttons and keyboard modifiers at the time of the drop are specified by buttons and modifiers .
把拖曳运转设为提议动作。
另请参阅 setDropAction (), proposedAction ()，和 accept ().
Returns the action to be performed on the data by the target. This may be different from the action supplied in proposedAction () if you have called setDropAction () to explicitly choose a drop action.
另请参阅 setDropAction ().
返回被按下的修饰符键。
Returns the data that was dropped on the widget and its associated MIME type information.
Returns the mouse buttons that are pressed..
返回掉落点位置。
返回可能掉落动作的 OR 组合。
另请参阅 dropAction ().
返回提议掉落动作。
另请参阅 dropAction ().
设置 action to be performed on the data by the target. Use this to override the 提议动作 with one of the possible actions .
If you set a drop action that is not one of the possible actions, the drag and drop operation will default to a copy operation.
Once you have supplied a replacement drop action, call accept() 而不是 acceptProposedAction ().
另请参阅 dropAction ().
If the source of the drag operation is a widget in this application, this function returns that source; otherwise it returns 0. The source of the operation is the first parameter to the QDrag object used instantiate the drag.
This is useful if your widget needs special behavior when dragging to itself.
另请参阅 QDrag.QDrag ().
