apps/graphics/twm4nx: Add logic to hide the window when it is iconified and restore the window when it is de-iconfied. Iconification works, de-iconification does not.

include/graphics/nxwidgets/cbgwindow.hxx

@@ -228,6 +228,32 @@ namespace NXWidgets
       return false;
     }
 
+    /**
+     * Show a hidden window
+     *
+     * @return Always returns false.
+     */
+
+    inline bool show(void)
+    {
+      // The background is always visible (although perhaps obscured)
+
+      return false;
+    }
+
+    /**
+     * Hide a visible window
+     *
+     * @return Always returns false.
+     */
+
+    inline bool hide(void)
+    {
+      // The background cannot be hidden
+
+      return false;
+    }
+
     /**
      * May be used to either (1) raise a window to the top of the display and
      * select modal behavior, or (2) disable modal behavior.  NOTE:  The

include/graphics/nxwidgets/cnxtkwindow.hxx

@@ -232,7 +232,10 @@ namespace NXWidgets
      * @return True on success, false on any failure.
      */
 
-    bool raise(void);
+    inline bool raise(void)
+    {
+      return nxtk_raise(m_hNxTkWindow) == OK;
+    }
 
     /**
      * Lower the window to the bottom of the display.
@@ -240,7 +243,32 @@ namespace NXWidgets
      * @return True on success, false on any failure.
      */
 
-    bool lower(void);
+    inline bool lower(void)
+    {
+      return nxtk_lower(m_hNxTkWindow) == OK;
+    }
+
+    /**
+     * Show a hidden window
+     *
+     * @return True on success, false on any failure.
+     */
+
+    inline bool show(void)
+    {
+      return nxtk_setvisibility(m_hNxTkWindow, false) == OK;
+    }
+
+    /**
+     * Hide a visible window
+     *
+     * @return True on success, false on any failure.
+     */
+
+    inline bool hide(void)
+    {
+      return nxtk_setvisibility(m_hNxTkWindow, true) == OK;
+    }
 
     /**
      * May be used to either (1) raise a window to the top of the display and

include/graphics/nxwidgets/cnxtoolbar.hxx

@@ -221,6 +221,34 @@ namespace NXWidgets
       return false;
     }
 
+    /**
+     * Show a hidden window.  The toolbar is a component of the containing,
+     * parent, framed window.  It cannot be shown separately.
+     *
+     * @return Always returns false.
+     */
+
+    inline bool show(void)
+    {
+      // The background is always visible (although perhaps obscured)
+
+      return false;
+    }
+
+    /**
+     * Hide a visible window.  The toolbar is a component of the containing,
+     * parent, framed window.  It cannot be hidden separately.
+     *
+     * @return Always returns false.
+     */
+
+    inline bool hide(void)
+    {
+      // The background cannot be hidden
+
+      return false;
+    }
+
     /**
      * May be used to either (1) raise a window to the top of the display and
      * select modal behavior, or (2) disable modal behavior.  The toolbar is

include/graphics/nxwidgets/cnxwindow.hxx

@@ -201,7 +201,10 @@ namespace NXWidgets
      * @return True on success, false on any failure.
      */
 
-    bool raise(void);
+    inline bool raise(void)
+    {
+      return nx_raise(m_hNxWindow) == OK;
+    }
 
     /**
      * Lower the window to the bottom of the display.
@@ -209,7 +212,32 @@ namespace NXWidgets
      * @return True on success, false on any failure.
      */
 
-    bool lower(void);
+    inline bool lower(void)
+    {
+      return nx_lower(m_hNxWindow) == OK;
+    }
+
+    /**
+     * Show a hidden window
+     *
+     * @return True on success, false on any failure.
+     */
+
+    inline bool show(void)
+    {
+      return nx_setvisibility(m_hNxWindow, false) == OK;
+    }
+
+    /**
+     * Hide a visible window
+     *
+     * @return True on success, false on any failure.
+     */
+
+    inline bool hide(void)
+    {
+      return nx_setvisibility(m_hNxWindow, true) == OK;
+    }
 
     /**
      * May be used to either (1) raise a window to the top of the display and

include/graphics/nxwidgets/inxwindow.hxx

@@ -190,6 +190,22 @@ namespace NXWidgets
 
     virtual bool lower(void) = 0;
 
+    /**
+     * Show a hidden window
+     *
+     * @return True on success, false on any failure.
+     */
+
+    virtual bool show(void) = 0;
+
+    /**
+     * Hide a visible window
+     *
+     * @return True on success, false on any failure.
+     */
+
+    virtual bool hide(void) = 0;
+
     /**
      * May be used to either (1) raise a window to the top of the display and
      * select modal behavior, or (2) disable modal behavior.

include/graphics/twm4nx/cwindow.hxx

@@ -469,6 +469,23 @@ namespace Twm4Nx
         return m_nxWin->lower();
       }
 
+      /**
+       * Show a hidden window
+       */
+
+      inline bool showWindow(void)
+      {
+        return m_nxWin->show();
+      }
+      /**
+       * Hide a visible window
+       */
+
+      inline bool hideWindow(void)
+      {
+        return m_nxWin->hide();
+      }
+
       /**
        * Convert the position of a primary window to the position of
        * the containing frame.