following changes in qt 5 may lead to incompatibilites:
QUuid
Removed implicit conversion operator QUuid::operator QString(), instead
QUuid::toString() function should be used.
Qt::escape() is deprecated (but can be enabled via
QT_DISABLE_DEPRECATED_BEFORE), use QString::toHtmlEscaped() instead.
QDate, QTime, and QDateTime may have changed
does it affect item selection?
QAbstractItemView and derived classes only emit the clicked() signal on left click now,
instead of on all mouse clicks.
does it affect read write bug?
[QTBUG-20503] QFileSystemModel no longer masks out write permissions from the permissions
returned from permissions() or data(FilePermissions), even if in read-only mode
(QFileSystemModel::isReadOnly()).
QtConcurrent is no longer in QtCore, but forms its own library now.
QMake-based projects can use
QT += concurrent
to include the new library.
QMessageBox
* The static function QMessageBox::question has changed the default argument
for buttons. Before the default was to have an Ok button. That is changed
to having a yes and a no button.
see https://qt.gitorious.org/qt/qtbase/blobs/stable/dist/changes-5.0.0
following changes in qt 5 may lead to incompatibilites:
QUuid
Qt::escape() is deprecated (but can be enabled via QT_DISABLE_DEPRECATED_BEFORE), use QString::toHtmlEscaped() instead.
QDate, QTime, and QDateTime may have changed
does it affect item selection? QAbstractItemView and derived classes only emit the clicked() signal on left click now, instead of on all mouse clicks.
does it affect read write bug? [QTBUG-20503] QFileSystemModel no longer masks out write permissions from the permissions returned from permissions() or data(FilePermissions), even if in read-only mode (QFileSystemModel::isReadOnly()).
QtConcurrent is no longer in QtCore, but forms its own library now. QMake-based projects can use QT += concurrent to include the new library.
QMessageBox * The static function QMessageBox::question has changed the default argument for buttons. Before the default was to have an Ok button. That is changed to having a yes and a no button.