Remove usages of deprecated APIs of qtbase/widgets

- Replace the usages of deprecated APIs by corresponding
  alternatives in the library code and documentation.

- Build docs for deprecated APIs conditionally, based on deprecation
  version. Remove the docs of methods deprecated since 5.0.0, these
  methods are not compiled anymore.

- Modify the tests to make them build when deprecated APIs disabled:
    * Make the the parts of the tests testing the deprecated APIs to
      be compiled conditionally, only when the corresponding methods
      are enabled.
    * If the test-case tests only the deprecated API, but not the
      corresponding replacement, add tests for the replacement

Task-number: QTBUG-76491
Task-number: QTBUG-76540
Task-number: QTBUG-76541
Change-Id: I6aaf0a1369c479fb880369a38f2b8e1e86b46934
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>

1 files changed, 3 insertions, 0 deletions

diff --git a/tests/auto/widgets/dialogs/qfiledialog/tst_qfiledialog.cpp b/tests/auto/widgets/dialogs/qfiledialog/tst_qfiledialog.cpp
index f7482bae45..2131e45f29 100644
--- a/tests/auto/widgets/dialogs/qfiledialog/tst_qfiledialog.cpp
+++ b/tests/auto/widgets/dialogs/qfiledialog/tst_qfiledialog.cpp
@@ -800,7 +800,10 @@ void tst_QFiledialog::isReadOnly()
     QAction* renameAction = fd.findChild<QAction*>("qt_rename_action");
     QAction* deleteAction = fd.findChild<QAction*>("qt_delete_action");
 
+#if QT_DEPRECATED_SINCE(5, 13)
     QCOMPARE(fd.isReadOnly(), false);
+#endif
+    QCOMPARE(fd.testOption(QFileDialog::ReadOnly), false);
 
     // This is dependent upon the file/dir, find cross platform way to test
     //fd.setDirectory(QDir::home());