Display doc info pages using documentation browser when in GUI mode (Bug #39451) * scripts/help/doc.m: call __octave_link_show_doc if in gui mode. * libinterp/corefcn/octave-link.h, libinterp/corefcn/octave-link.cc (octave_link::show_doc): New function. (octave_link::do_show_doc): New virtual function. (__octave_link_show_doc__): New function. * libgui/src/octave-qt-link.h (octave_qt_link::show_doc_signal): New signal. (octave_qt_link::do_show_doc): New function. * libgui/src/documentation-dock-widget.cc, libgui/src/documentation-dock-widget.h (documentation_dock_widget::showDoc): New function. * libgui/src/main-window.cc, libgui/src/main-window.h (main_window::construct_octave_qt_link): connect handle_show_doc. (main_window::handle_show_doc): New function. (main_window::show_doc_signal): New signal. * libgui/src/qtinfo/parser.cc, libgui/src/qtinfo/parser.h (parser::find_ref): New function. * libgui/src/qtinfo/webinfo.cc, libgui/src/qtinfo/webinfo.h (webinfo::load_ref): New function.

--- a/libgui/src/main-window.cc	Sat Jul 20 13:01:45 2013 +0200
+++ b/libgui/src/main-window.cc	Sat Jul 20 22:13:51 2013 -0400
@@ -938,6 +938,10 @@
            this,
            SLOT (handle_update_breakpoint_marker_request (bool, const QString&, int)));
 
+  connect (_octave_qt_link,
+           SIGNAL (show_doc_signal (const QString &)),
+           this, SLOT (handle_show_doc (const QString &)));
+
   connect (_workspace_model,
            SIGNAL (rename_variable (const QString&, const QString&)),
            this,
@@ -1612,3 +1616,12 @@
 
   emit set_widget_shortcuts_signal (set_shortcuts);
 }
+
+void
+main_window::handle_show_doc (const QString& file)
+{
+  doc_browser_window->setVisible (true);
+  emit show_doc_signal (file);
+}
+
+