Create ActiveX widget only if OpaqueUndocking is not active - it will cause jerking dragging of floating widget

Author: githubuser0xFFFF

demo/MainWindow.cpp

@@ -544,7 +544,13 @@ void MainWindowPrivate::createContent()
 
 #ifdef Q_OS_WIN
 #if (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
-    DockManager->addDockWidget(ads::CenterDockWidgetArea, createActiveXWidget(), RighDockArea);
+    // If opaque undocking is active, then undocking of widgets while
+    // active x widget is visible causes jerking while dragging a floating
+    // widget
+    if (!ads::CDockManager::testConfigFlag(ads::CDockManager::OpaqueUndocking))
+    {
+    	DockManager->addDockWidget(ads::CenterDockWidgetArea, createActiveXWidget(), RighDockArea);
+    }
 #endif
 #endif
 
@@ -697,7 +703,7 @@ CMainWindow::CMainWindow(QWidget *parent) :
 
     // uncomment the following line if you want to use opaque undocking and
 	// opaque splitter resizing
-    CDockManager::setConfigFlags(CDockManager::DefaultOpaqueConfig);
+    //CDockManager::setConfigFlags(CDockManager::DefaultOpaqueConfig);
 
     // uncomment the following line if you want a fixed tab width that does
 	// not change if the visibility of the close button changes