note description: "Help engine, displays help context, Windows implementation" legal: "See notice at end of class." status: "See notice at end of class." class EB_HELP_ENGINE_IMP inherit EB_HELP_ENGINE_I EIFFEL_LAYOUT export {NONE} all end SHARED_BENCH_NAMES export {NONE} all end create make feature {NONE} -- Initialization make -- Create HTML Help handler. do create hh_handler internal_show_successful := True ensure hh_handler /= Void last_show_successful: last_show_successful end feature -- Status Report last_show_successful: BOOLEAN -- Was last call to `show' successful? do Result := internal_show_successful end last_error_message: STRING_GENERAL -- Last error message, if any do Result := internal_error_message end feature -- Basic Operations show (a_help_context: EB_HELP_CONTEXT) -- Show help with context `a_help_context'. do hh_handler.show (Url_prefix + a_help_context.url) internal_show_successful := hh_handler.last_show_successful if not internal_show_successful then internal_error_message := Warnings.w_help_topic_could_not_be_displayed end end feature {NONE} -- Implementation internal_show_successful: BOOLEAN -- Was last call to `show' successful? internal_error_message: STRING_GENERAL -- Last error message, if any hh_handler: EB_HTML_HELP_HANDLER -- Control content of Microsoft HTML Help Url_prefix: STRING_32 -- URL prefix for $EiffelGraphicalCompiler$ help files once Result := eiffel_layout.docs_path.name Result.append ("\eiffel.chm::") end note copyright: "Copyright (c) 1984-2012, Eiffel Software" license: "GPL version 2 (see http://www.eiffel.com/licensing/gpl.txt)" licensing_options: "http://www.eiffel.com/licensing" copying: "[ This file is part of Eiffel Software's Eiffel Development Environment. Eiffel Software's Eiffel Development Environment is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2 of the License (available at the URL listed under "license" above). Eiffel Software's Eiffel Development Environment is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Eiffel Software's Eiffel Development Environment; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA ]" source: "[ Eiffel Software 5949 Hollister Ave., Goleta, CA 93117 USA Telephone 805-685-1006, Fax 805-685-6869 Website http://www.eiffel.com Customer support http://support.eiffel.com ]" end -- class EB_HELP_ENGINE