Added documentation of new AutoHideCloseButtonCollapsesDock flag

Author: githubuser0xFFFF

demo/MainWindow.cpp

@@ -734,7 +734,7 @@ CMainWindow::CMainWindow(QWidget *parent) :
     CDockManager::setConfigFlag(CDockManager::FocusHighlighting, true);
 
 	// uncomment if you would like to enable dock widget auto hiding
-    CDockManager::setAutoHideConfigFlags(CDockManager::DefaultAutoHideConfig);
+    CDockManager::setAutoHideConfigFlags({CDockManager::DefaultAutoHideConfig | CDockManager::AutoHideCloseButtonCollapsesDock});
 
 	// uncomment if you would like to enable an equal distribution of the
 	// available size of a splitter to all contained dock widgets

doc/cfg_flag_AutoHideCloseButtonCollapsesDock_false.gif

@@ -39,6 +39,7 @@
   - [`AutoHideButtonCheckable`](#autohidebuttoncheckable)
   - [`AutoHideSideBarsIconOnly`](#autohidesidebarsicononly)
   - [`AutoHideShowOnMouseOver`](#autohideshowonmouseover)
+  - [`AutoHideCloseButtonCollapsesDock`](#autohideclosebuttoncollapsesdock)
 - [DockWidget Feature Flags](#dockwidget-feature-flags)
   - [`DockWidgetClosable`](#dockwidgetclosable)
   - [`DockWidgetMovable`](#dockwidgetmovable)
@@ -589,6 +590,21 @@ is shown, if the user hovers over the Auto-Hide tab or if the users moves the
 mouse outside of the Auto-Hide widget. Showing and hiding my mouse click still
 works if this feature is enabled.
 
+### `AutoHideCloseButtonCollapsesDock`
+
+Some users don't understand the distinction between closing an auto hide dock and
+collapsing an auto hide dock. This may lead to situations where they press the
+close button (losing the side tab widget) instead of simply clicking outside
+the auto hide dock (collapsing the dock). 
+
+![AutoHideCloseButtonCollapsesDock false](cfg_flag_AutoHideCloseButtonCollapsesDock_false.gif)
+
+If `AutoHideCloseButtonCollapsesDock` option is active, the
+close button in an auto hide widget collapses the auto hide widget instead of
+closing it.
+
+![AutoHideCloseButtonCollapsesDock true](cfg_flag_AutoHideCloseButtonCollapsesDock_true.gif)
+
 ## DockWidget Feature Flags
 
 ### `DockWidgetClosable`

doc/cfg_flag_AutoHideCloseButtonCollapsesDock_true.gif

@@ -245,7 +245,7 @@ public Q_SLOTS:
 		AutoHideButtonCheckable = 0x08, //!< If the flag is set, the auto hide button will be checked and unchecked depending on the auto hide state. Mainly for styling purposes.
 		AutoHideSideBarsIconOnly = 0x10,///< show only icons in auto hide side tab - if a tab has no icon, then the text will be shown
 		AutoHideShowOnMouseOver = 0x20, ///< show the auto hide window on mouse over tab and hide it if mouse leaves auto hide container
-		AutoHideCloseButtonCollapsesDock = 0x40, ///< Close button of an auto hide container closes the dock instead of hiding it completely
+		AutoHideCloseButtonCollapsesDock = 0x40, ///< Close button of an auto hide container collapses the dock instead of hiding it completely
 
 		DefaultAutoHideConfig = AutoHideFeatureEnabled
 			                  | DockAreaHasAutoHideButton ///< the default configuration for left and right side bars