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, 2 insertions, 2 deletions

diff --git a/tests/auto/widgets/widgets/qtabwidget/tst_qtabwidget.cpp b/tests/auto/widgets/widgets/qtabwidget/tst_qtabwidget.cpp
index cbf5196bb9..feade7d443 100644
--- a/tests/auto/widgets/widgets/qtabwidget/tst_qtabwidget.cpp
+++ b/tests/auto/widgets/widgets/qtabwidget/tst_qtabwidget.cpp
@@ -620,7 +620,7 @@ void tst_QTabWidget::heightForWidth()
 
     QWidget *window = new QWidget;
     QVBoxLayout *lay = new QVBoxLayout(window);
-    lay->setMargin(0);
+    lay->setContentsMargins(0, 0, 0, 0);
     lay->setSpacing(0);
     QTabWidget *tabWid = new QTabWidget(window);
     QWidget *w = new QWidget;
@@ -637,7 +637,7 @@ void tst_QTabWidget::heightForWidth()
                                );
     label->setWordWrap(true);
     lay2->addWidget(label);
-    lay2->setMargin(0);
+    lay2->setContentsMargins(0, 0, 0, 0);
 
     lay->addWidget(tabWid);
     int h = window->heightForWidth(160);