Added documentation for DockAreaHideDisabledButtons flag

Author: githubuser0xFFFF

doc/cfg_flag_DockAreaHideDisabledButtons_false.png

@@ -18,6 +18,7 @@
   - [`AlwaysShowTabs`](#alwaysshowtabs)
   - [`DockAreaHasUndockButton`](#dockareahasundockbutton)
   - [`DockAreaHasTabsMenuButton`](#dockareahastabsmenubutton)
+  - [`DockAreaHideDisabledButtons`](#dockareahidedisabledbuttons)
 
 ## Configuration Flags
 
@@ -227,3 +228,17 @@ in the dock area title bar. On the left side, the tabs menu button flag
 is cleared.
 
 ![DockAreaHasTabsMenuButton false true](cfg_flag_DockAreaHasTabsMenuButton_false_true.png)
+
+### `DockAreaHideDisabledButtons`
+
+If certain flags of a dock widget are disabled, like `DockWidgetClosable` or
+`DockWidgetFloatable`, then the corresponding dock area buttons like close
+button or detach button are disabled (greyed out). This is the default
+setting.
+
+![DockAreaHideDisabledButtons false](cfg_flag_DockAreaHideDisabledButtons_false.png)
+
+If the flag is set, disabled dock area buttons will not appear on the toolbar at
+all - they are hidden.
+
+![DockAreaHideDisabledButtons true](cfg_flag_DockAreaHideDisabledButtons_true.png)

doc/cfg_flag_DockAreaHideDisabledButtons_true.png

@@ -155,7 +155,7 @@ class ADS_EXPORT CDockManager : public CDockContainerWidget
 		AlwaysShowTabs = 0x2000,///< If this option is enabled, the tab of a dock widget is always displayed - even if it is the only visible dock widget in a floating widget.
 		DockAreaHasUndockButton = 0x4000,     //!< If the flag is set each dock area has an undock button
 		DockAreaHasTabsMenuButton = 0x8000,     //!< If the flag is set each dock area has a tabs menu button
-		DockAreaHideDisabledButtons = 0x10000,    //!< If the flag is set disabled dock area buttons will not appear on the tollbar at all (enabling them will bring them back)
+		DockAreaHideDisabledButtons = 0x10000,    //!< If the flag is set disabled dock area buttons will not appear on the toolbar at all (enabling them will bring them back)
 		DockAreaDynamicTabsMenuButtonVisibility = 0x20000, //!< If the flag is set dock area will disable a tabs menu button when there is only one tab in the area
 		FloatingContainerHasWidgetTitle = 0x40000, //!< If set, the Floating Widget window title reflects the title of the current dock widget otherwise it displays application name as window title
 		FloatingContainerHasWidgetIcon = 0x80000, //!< If set, the Floating Widget icon reflects the icon of the current dock widget otherwise it displays application icon

doc/user-guide.md

@@ -147,8 +147,8 @@ private slots:
 
     enum DockWidgetFeature
     {
-        DockWidgetClosable = 0x01,
-        DockWidgetMovable = 0x02,///< this feature is not properly implemented yet and is ignored
+        DockWidgetClosable = 0x01,///< dock widget has a close button
+        DockWidgetMovable = 0x02,///< dock widget is movable and can be moved to a new position in the current dock container
         DockWidgetFloatable = 0x04,
         DockWidgetDeleteOnClose = 0x08, ///< deletes the dock widget when it is closed
         CustomCloseHandling = 0x10,