本文整理汇总了C++中QDragManager::drag方法的典型用法代码示例。如果您正苦于以下问题：C++ QDragManager::drag方法的具体用法？C++ QDragManager::drag怎么用？C++ QDragManager::drag使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QDragManager的用法示例。
在下文中一共展示了QDragManager::drag方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: exec
Qt::DropAction QDrag::exec(Qt::DropActions supportedActions, Qt::DropAction defaultDropAction)
{
Q_D(QDrag);
if (!d->data) {
qWarning("QDrag: No mimedata set before starting the drag");
return d->executed_action;
}
QDragManager *manager = QDragManager::self();
d->defaultDropAction = Qt::IgnoreAction;
d->possible_actions = supportedActions;
if (manager) {
if (defaultDropAction == Qt::IgnoreAction) {
if (supportedActions & Qt::MoveAction) {
d->defaultDropAction = Qt::MoveAction;
} else if (supportedActions & Qt::CopyAction) {
d->defaultDropAction = Qt::CopyAction;
} else if (supportedActions & Qt::LinkAction) {
d->defaultDropAction = Qt::LinkAction;
}
} else {
d->defaultDropAction = defaultDropAction;
}
d->executed_action = manager->drag(this);
}
return d->executed_action;
}示例2: start
/*!
\obsolete
\bold{Note:} It is recommended to use exec() instead of this function.
Starts the drag and drop operation and returns a value indicating the requested
drop action when it is completed. The drop actions that the user can choose
from are specified in \a request. Qt::CopyAction is always allowed.
\bold{Note:} Although the drag and drop operation can take some time, this function
does not block the event loop. Other events are still delivered to the application
while the operation is performed.
\sa exec()
*/
Qt::DropAction QDrag::start(Qt::DropActions request)
{
Q_D(QDrag);
if (!d->data) {
qWarning("QDrag: No mimedata set before starting the drag");
return d->executed_action;
}
QDragManager *manager = QDragManager::self();
d->defaultDropAction = Qt::IgnoreAction;
d->possible_actions = request | Qt::CopyAction;
if (manager)
d->executed_action = manager->drag(this);
return d->executed_action;
}