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/kernel/qwidget/tst_qwidget.cpp b/tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp
index 5465bd5518..bfc2631842 100644
--- a/tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp
+++ b/tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp
@@ -8073,7 +8073,7 @@ public:
             sp.setHeightForWidth(hfwLayout);
 
             QVBoxLayout *vbox = new QVBoxLayout;
-            vbox->setMargin(0);
+            vbox->setContentsMargins(0, 0, 0, 0);
             vbox->addWidget(new ASWidget(sizeHint + QSize(30, 20), sp, false, false));
             setLayout(vbox);
         }
@@ -10120,7 +10120,7 @@ void tst_QWidget::grabMouse()
     w.setObjectName(QLatin1String("tst_qwidget_grabMouse"));
     w.setWindowTitle(w.objectName());
     QLayout *layout = new QVBoxLayout(&w);
-    layout->setMargin(50);
+    layout->setContentsMargins(50, 50, 50, 50);
     GrabLoggerWidget *grabber = new GrabLoggerWidget(&log, &w);
     const QString grabberObjectName = QLatin1String("tst_qwidget_grabMouse_grabber");
     grabber->setObjectName(grabberObjectName);