Some changes for dockwidget tab close button, some refactorings to make insertion of widgets into dock widget easier, added createDefaultToolBar function for creation of toolbar and removed layout flags from CDockWidget

src/DockAreaWidget.cpp

@@ -739,6 +739,16 @@ QAbstractButton* CDockAreaWidget::titleBarButton(TitleBarButton which) const
 {
 	return d->TitleBar->button(which);
 }
+
+
+//============================================================================
+void CDockAreaWidget::closeArea()
+{
+	for (auto DockWidget : openedDockWidgets())
+	{
+		DockWidget->toggleView(false);
+	}
+}
 } // namespace ads
 
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