diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 1bac9167..cd11b29e 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,411 +1,411 @@
 include_directories(
     ${CMAKE_CURRENT_SOURCE_DIR}  # needed for subdirs
     ${CMAKE_CURRENT_SOURCE_DIR}/core
     ${CMAKE_CURRENT_BINARY_DIR}/core  # for the kcfg file
     ${CMAKE_CURRENT_SOURCE_DIR}/drawparts
     ${CMAKE_CURRENT_SOURCE_DIR}/electronics
     ${CMAKE_CURRENT_SOURCE_DIR}/electronics/components
     ${CMAKE_CURRENT_SOURCE_DIR}/electronics/simulation
     ${CMAKE_CURRENT_SOURCE_DIR}/flowparts
     ${CMAKE_CURRENT_SOURCE_DIR}/gui
     ${CMAKE_CURRENT_BINARY_DIR}/gui  # for ui-generated files
     ${CMAKE_CURRENT_SOURCE_DIR}/gui/itemeditor
     ${CMAKE_CURRENT_SOURCE_DIR}/languages
     ${CMAKE_CURRENT_SOURCE_DIR}/mechanics
     ${CMAKE_CURRENT_SOURCE_DIR}/micro
     ${CMAKE_CURRENT_SOURCE_DIR}/ktlqt3support
     ${KDE4_INCLUDES}
     ${QT_INCLUDES})
 if(GPSim_FOUND)
     include_directories(${GPSim_INCLUDE_DIRS})
     set(CMAKE_CXX_FLAGS ${KDE4_ENABLE_EXCEPTIONS})
 endif()
 
 add_subdirectory(core)
 add_subdirectory(gui)
 add_subdirectory(flowparts)
 add_subdirectory(micro)
 add_subdirectory(mechanics)
 add_subdirectory(electronics)
 add_subdirectory(languages)
 add_subdirectory(drawparts)
 add_subdirectory(contexthelp)
 add_subdirectory(math)
 add_subdirectory(ktlqt3support)
 
 ########### next target ###############
 
 set(core_KCFG_SRCS
     core/ktlconfig.kcfgc
 )
 kconfig_add_kcfg_files(core_STAT_SRCS ${core_KCFG_SRCS})
 
 set(gui_UI
     ./gui/gpasmsettingswidget.ui
     ./gui/newpinmappingwidget.ui
     ./gui/outputmethodwidget.ui
     ./gui/logicwidget.ui
     ./gui/microsettingswidget.ui
     ./gui/createsubprojectwidget.ui
     ./gui/picprogrammerconfigwidget.ui
     ./gui/contexthelpwidget.ui
     ./gui/linkeroptionswidget.ui
     ./gui/programmerwidget.ui
     ./gui/newprojectwidget.ui
     ./gui/scopescreenwidget.ui
     ./gui/oscilloscopewidget.ui
     ./gui/newfilewidget.ui
     ./gui/processingoptionswidget.ui
     ./gui/asmformattingwidget.ui
     ./gui/generaloptionswidget.ui
     ./gui/sdccoptionswidget.ui
     ./gui/gplinksettingswidget.ui
 )
 
-qt5_wrap_ui(gui_STAT_SRCS ${gui_UI})
+ki18n_wrap_ui(gui_STAT_SRCS ${gui_UI})
 
 SET(ktechlab_SRCS
     ${core_STAT_SRCS}
     ${gui_STAT_SRCS}
     ./document.cpp
     ./gui/programmerdlg.cpp
     ./gui/itemeditor/propertyeditoritem.cpp
     ./gui/itemeditor/itemeditor.cpp
     ./gui/itemeditor/propertyeditor.cpp
     ./gui/itemeditor/propertysubeditor.cpp
     ./gui/itemeditor/componentmodelwidget.cpp
     ./gui/itemeditor/propertyeditorlist.cpp
     ./gui/itemeditor/propertyeditorcolor.cpp
     ./gui/itemeditor/orientationwidget.cpp
     ./gui/itemeditor/propertyeditorinput.cpp
     ./gui/itemeditor/propertyeditorfile.cpp
     ./gui/probepositioner.cpp
     ./gui/richtexteditor.cpp
     ./gui/logview.cpp
     ./gui/contexthelp.cpp
     ./gui/oscilloscopeview.cpp
     ./gui/doublespinbox.cpp
     ./gui/lineedit.cpp
     ./gui/microselectwidget.cpp
     ./gui/scopescreen.cpp
     ./gui/itemselector.cpp
     ./gui/scopescreenview.cpp
     ./gui/microsettingsdlg.cpp
     ./gui/colorcombo.cpp
     ./gui/symbolviewer.cpp
     ./gui/oscilloscope.cpp
     ./gui/newfiledlg.cpp
     ./gui/projectdlgs.cpp
     ./gui/outputmethoddlg.cpp
     ./gui/scopeviewbase.cpp
     ./gui/settingsdlg.cpp
     ./projectmanager.cpp
     ./cells.cpp
     ./docmanageriface.cpp
     ./micro/picinfo16bit.cpp
     ./micro/picinfo12bit.cpp
     ./micro/picinfo.cpp
     ./micro/micropackage.cpp
     ./micro/microlibrary.cpp
     ./micro/picinfo14bit.cpp
     ./micro/microinfo.cpp
     ./micro/asminfo.cpp
     ./ciwidgetmgr.cpp
     ./fpnode.cpp
     ./textdocument.cpp
     ./filemetainfo.cpp
     ./resizeoverlay.cpp
     ./viewcontainer.cpp
     ./microsettings.cpp
     ./nodegroup.cpp
     ./flowcodeview.cpp
     ./debugmanager.cpp
     ./flowparts/readport.cpp
     ./flowparts/inputflownode.cpp
     ./flowparts/repeat.cpp
     ./flowparts/embed.cpp
     ./flowparts/sub.cpp
     ./flowparts/while.cpp
     ./flowparts/flowconnectorlist.cpp
     ./flowparts/setpin.cpp
     ./flowparts/pinmapping.cpp
     ./flowparts/interrupt.cpp
     ./flowparts/inputbutton.cpp
     ./flowparts/flowicndocument.cpp
     ./flowparts/testpin.cpp
     ./flowparts/flowconnector.cpp
     ./flowparts/writeport.cpp
     ./flowparts/flowpart.cpp
     ./flowparts/forloop.cpp
     ./flowparts/count.cpp
     ./flowparts/outputflownode.cpp
     ./flowparts/end.cpp
     ./flowparts/callsub.cpp
     ./flowparts/unary.cpp
     ./flowparts/start.cpp
     ./flowparts/varassignment.cpp
     ./flowparts/delay.cpp
     ./flowparts/pulse.cpp
     ./flowparts/junctionflownode.cpp
     ./flowparts/keypad.cpp
     ./flowparts/sevenseg.cpp
     ./flowparts/varcomparison.cpp
     ./math/qvector.cpp
     ./math/qmatrix.cpp
     ./picitem.cpp
 #     ./core/main.cpp
     ./core/diagnosticstyle.cpp
     ./core/logtofilemsghandler.cpp
     ./node.cpp
     ./documentiface.cpp
     ./docmanager.cpp
     ./itemview.cpp
     ./viewiface.cpp
     ./icndocument.cpp
     ./itemdocument.cpp
     ./itemgroup.cpp
     ./cnitemgroup.cpp
     ./canvasmanipulator.cpp
     ./iteminterface.cpp
     ./mechanics/mechanicsitem.cpp
     ./mechanics/mechanicsdocument.cpp
     ./mechanics/chassiscircular2.cpp
     ./mechanics/mechanicssimulation.cpp
     ./mechanics/mechanicsview.cpp
     ./mechanics/mechanicsgroup.cpp
     ./electronics/electronicconnector.cpp
     ./electronics/circuitdocument.cpp
     ./electronics/ecnode.cpp
 #     ./electronics/models/utils/spice-to-nice.cpp
     ./electronics/pinnode.cpp
     ./electronics/port.cpp
     ./electronics/components/variablecapacitor.cpp
     ./electronics/components/rotoswitch.cpp
     ./electronics/components/led.cpp
     ./electronics/components/binarycounter.cpp
     ./electronics/components/probe.cpp
     ./electronics/components/inductor.cpp
     ./electronics/components/eccurrentsignal.cpp
     ./electronics/components/ecpotentiometer.cpp
     ./electronics/components/flipflop.cpp
     ./electronics/components/serialportcomponent.cpp
     ./electronics/components/piccomponentpin.cpp
     ./electronics/components/ecopamp.cpp
     ./electronics/components/multiplexer.cpp
     ./electronics/components/ecmosfet.cpp
     ./electronics/components/dependentsource.cpp
     ./electronics/components/ecground.cpp
     ./electronics/components/resistordip.cpp
     ./electronics/components/magnitudecomparator.cpp
     ./electronics/components/piccomponent.cpp
     ./electronics/components/matrixdisplay.cpp
     ./electronics/components/eccurrentsource.cpp
     ./electronics/components/ecvoltagesignal.cpp
     ./electronics/components/demultiplexer.cpp
     ./electronics/components/externalconnection.cpp
     ./electronics/components/ledbargraphdisplay.cpp
     ./electronics/components/bidirled.cpp
     ./electronics/components/ecbcdto7segment.cpp
     ./electronics/components/ecsevensegment.cpp
     ./electronics/components/ecvoltagesource.cpp
     ./electronics/components/parallelportcomponent.cpp
     ./electronics/components/ec555.cpp
     ./electronics/components/resistor.cpp
     ./electronics/components/voltageregulator.cpp
     ./electronics/components/multiinputgate.cpp
     ./electronics/components/discretelogic.cpp
     ./electronics/components/pushswitch.cpp
     ./electronics/components/ecjfet.cpp
     ./electronics/components/meter.cpp
     ./electronics/components/variableresistor.cpp
     ./electronics/components/ecsignallamp.cpp
     ./electronics/components/ecclockinput.cpp
     ./electronics/components/ecbjt.cpp
     ./electronics/components/matrixdisplaydriver.cpp
     ./electronics/components/fulladder.cpp
     ./electronics/components/ecdiode.cpp
     ./electronics/components/ecfixedvoltage.cpp
     ./electronics/components/bussplitter.cpp
     ./electronics/components/capacitor.cpp
     ./electronics/components/ram.cpp
     ./electronics/components/toggleswitch.cpp
     ./electronics/components/ecsubcircuit.cpp
     ./electronics/components/addac.cpp
     ./electronics/components/eckeypad.cpp
     ./electronics/junctionnode.cpp
     ./electronics/switch.cpp
     ./electronics/gpsimprocessor.cpp
     ./electronics/wire.cpp
     ./electronics/componentmodellibrary.cpp
     ./electronics/pin.cpp
     ./electronics/circuiticndocument.cpp
     ./electronics/simulation/circuit.cpp
     ./electronics/simulation/element.cpp
     ./electronics/simulation/matrix.cpp
     ./electronics/simulation/diode.cpp
     ./electronics/simulation/elementsignal.cpp
     ./electronics/simulation/voltagesignal.cpp
     ./electronics/simulation/capacitance.cpp
     ./electronics/simulation/resistance.cpp
     ./electronics/simulation/elementset.cpp
     ./electronics/simulation/inductance.cpp
     ./electronics/simulation/voltagesource.cpp
     ./electronics/simulation/voltagepoint.cpp
     ./electronics/simulation/vcvs.cpp
     ./electronics/simulation/mosfet.cpp
     ./electronics/simulation/jfet.cpp
     ./electronics/simulation/ccvs.cpp
     ./electronics/simulation/bjt.cpp
     ./electronics/simulation/opamp.cpp
     ./electronics/simulation/currentsource.cpp
     ./electronics/simulation/cccs.cpp
     ./electronics/simulation/vccs.cpp
     ./electronics/simulation/logic.cpp
     ./electronics/simulation/nonlinear.cpp
     ./electronics/simulation/currentsignal.cpp
     ./electronics/simulation/reactive.cpp
     ./electronics/subcircuits.cpp
     ./electronics/component.cpp
     ./circuitview.cpp
     ./itemlibrary.cpp
     ./simulator.cpp
     ./dcop_stub.cpp
     ./variablelabel.cpp
     ./item.cpp
     ./itemdocumentdata.cpp
     ./ktlqt3support/ktlfindqobjectchild.cpp
     ./ktlqt3support/ktlq3scrollview.cpp
     ./ktlqt3support/ktlq3polygonscanner.cpp
     ./ktlqt3support/ktlq3frame.cpp
     ./oscilloscopedata.cpp
     ./variant.cpp
     ./connector.cpp
     ./icnview.cpp
     ./drawparts/drawpart.cpp
     ./drawparts/dpline.cpp
     ./drawparts/solidshape.cpp
     ./drawparts/dptext.cpp
     ./drawparts/dpimage.cpp
     ./textview.cpp
     ./katemdi.cpp
     ./view.cpp
     ./ktechlab.cpp
     ./canvasitemparts.cpp
     ./eventinfo.cpp
     ./canvasitemlist.cpp
     ./asmformatter.cpp
     ./cnitem.cpp
     ./flowcodedocument.cpp
     ./libraryitem.cpp
     ./conrouter.cpp
     ./recentfilesaction.cpp
     ./canvas.cpp
     ./canvasitems.cpp
     ./flowcontainer.cpp
     ./languages/processchain.cpp
     ./languages/gpdasm.cpp
     ./languages/gplink.cpp
     ./languages/gplib.cpp
     ./languages/language.cpp
     ./languages/sourceline.cpp
     ./languages/microbe.cpp
     ./languages/picprogrammer.cpp
     ./languages/externallanguage.cpp
     ./languages/asmparser.cpp
     ./languages/languagemanager.cpp
     ./languages/gpasm.cpp
     ./languages/sdcc.cpp
     ./languages/flowcode.cpp
 )
 
 set(ktechlab_DCOP_SKEL_SRCS
     docmanageriface.h
     viewiface.h
     documentiface.h
 )
 
 #kde3_add_dcop_skels(ktechlab_SRCS ${ktechlab_DCOP_SKEL_SRCS})
 
 add_executable(ktechlab
     core/main.cpp
     ${ktechlab_SRCS}
     )
 
 target_link_libraries( ktechlab
     #core 
 #     gui 
     #micro 
     #flowparts
     #ktlqt3support
 	#mechanics electronics elements components languages drawparts
 	#itemeditor math
 	KF5::TextEditor
 	KF5::KHtml
 	KF5::Parts
     KF5::KDELibs4Support
     KF5::WidgetsAddons
 	${KDE4_KHTML_LIBRARY} # khtml
 	${GPSIM_LIBRARY}
 	${QT_QTXML_LIBRARY}
 	${QT_QTGUI_LIBRARY} # QtGui
 	${QT_QTCORE_LIBRARY} # QtCore
 	KF5::ConfigCore
 	KF5::ConfigGui
 	KF5::CoreAddons
 	KF5::IconThemes
 	KF5::KIOCore
 	KF5::KHtml
 	KF5::Parts
 	KF5::XmlGui
 	KF5::TextEditor
     KF5::WidgetsAddons
 	KF5::KDELibs4Support
 	)
 if(GPSim_FOUND)
     target_link_libraries(ktechlab ${GPSim_LIBRARIES})
 endif()
 
 install(TARGETS ktechlab ${INSTALL_TARGETS_DEFAULT_ARGS})
 
 
 # message(STATUS "include_dir begin")
 # get_property(dirs TARGET ktechlab PROPERTY INCLUDE_DIRECTORIES)
 # foreach(dir ${dirs})
 #   message(STATUS "ktechlab include_dir='${dir}'")
 # endforeach()
 # message(STATUS "include_dir end")
 
 message(STATUS "include_dir begin")
 get_property(dirs TARGET KF5::TextEditor PROPERTY INTERFACE_INCLUDE_DIRECTORIES)
 foreach(dir ${dirs})
   message(STATUS "KF5::TextEditor include_dir='${dir}'")
 endforeach()
 message(STATUS "include_dir end")
 
 # for helping testing
 
 add_library(test_ktechlab STATIC ${ktechlab_SRCS})
 
 target_link_libraries(test_ktechlab
     KF5::TextEditor
 	KF5::KHtml
 	KF5::Parts
     KF5::KDELibs4Support
     KF5::WidgetsAddons
 )
 
 ########### install files ###############
 
 install(FILES microbe.xml DESTINATION ${DATA_INSTALL_DIR}/katepart5/syntax)
 install(FILES
     ktechlabui.rc
     ktechlabcircuitui.rc
     ktechlabflowcodeui.rc
 	ktechlabitemviewui.rc
 	ktechlabmechanicsui.rc
 	ktechlabtextui.rc
 	ktechlabkateui.rc
 	DESTINATION ${KXMLGUI_INSTALL_DIR}/ktechlab)
 install(FILES org.kde.ktechlab.desktop DESTINATION ${XDG_APPS_INSTALL_DIR})
 install(FILES ktechlab_mime.xml DESTINATION ${XDG_MIME_INSTALL_DIR})
 install(FILES org.kde.ktechlab.appdata.xml DESTINATION ${KDE_INSTALL_METAINFODIR} )
diff --git a/src/core/main.cpp b/src/core/main.cpp
index b2d529c4..416235ae 100644
--- a/src/core/main.cpp
+++ b/src/core/main.cpp
@@ -1,107 +1,108 @@
 /***************************************************************************
  *   Copyright (C) 2003-2005 by David Saxton                               *
  *   david@bluehaze.org                                                    *
  *                                                                         *
  *   This program 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; either version 2 of the License, or     *
  *   (at your option) any later version.                                   *
  ***************************************************************************/
 
 #include "ktechlab.h"
 #include "diagnosticstyle.h"
 #include "logtofilemsghandler.h"
 
 //#include <dcopclient.h>
 #include <kconfig.h>
 #include <config.h>
 
 #include <KAboutData>
 #include <KLocalizedString>
 
 
 #include <QApplication>
 #include <QCommandLineParser>
 
 static const char description[] =
     I18N_NOOP("An IDE for microcontrollers and electronics");
 
 // static KCmdLineOptions options[] =
 // {
 //     { "+[URL]", I18N_NOOP( "Document to open." ), 0 },
 //     KCmdLineLastOption
 // };
 
 
 int main(int argc, char **argv)
 {
     LogToFileMsgHandler logFileHandler;
     QApplication app(argc, argv);
+    KLocalizedString::setApplicationDomain("ktechlab");
 
     KAboutData about("ktechlab", i18n("KTechLab"), VERSION, i18n(description),
                      KAboutLicense::LicenseKey::GPL_V2,
                      i18n("(C) 2003-2017, The KTechLab developers"),
                      "", "https://userbase.kde.org/KTechlab", "ktechlab-devel@kde.org" );
 	about.addAuthor( i18n("Alan Grimes"),
                      i18n("Developer, Simulation"),
                      "" );
 	about.addAuthor( i18n("Zoltan Padrah"),
                      i18n("Developer") ,
                      "zoltan_padrah@users.sourceforge.net");
     about.addAuthor( i18n("Julian Bäume"),
                      i18n("Developer, KDE4 Port, GUI"),
                      "julian@svg4all.de" );
     about.addAuthor( i18n("Juan De Vincenzo"),
                      i18n("KDE4 Port"),
                      "");
     about.addCredit( i18n("Lawrence Shafer"),
                      i18n("Website, wiki and forum"),
                      "");
 	about.addCredit( i18n("Jason Lucas"),
                      i18n("Keeping up the project during lack of developers"),
                      "" );
 	about.addCredit( i18n("David Saxton"),
                      i18n("Former developer, project founder, former maintainer"),
                      "david@bluehaze.org" );
 	about.addCredit( i18n("Daniel Clarke"),
                      i18n("Former developer"),
                      "daniel.jc@gmail.com" );
 	about.addCredit( i18n("Couriousous"),
                      i18n("JK flip-flop, asynchronous preset/reset in the D flip-flop"),
                      "" );
 	about.addCredit( i18n("John Myers"),
                      i18n("Rotary Switch"),
                      "" );
 	about.addCredit( i18n("Ali Akcaagac"),
                      i18n("Glib friendliness"),
                      "" );
 	about.addCredit( i18n("David Leggett"),
                      i18n("Former website hosting and feedback during early development"),
                      "" );
     KAboutData::setApplicationData(about);
 
     // https://techbase.kde.org/Development/Tutorials/KCmdLineArgs
     QCommandLineParser parser;
     parser.addHelpOption();
     parser.addVersionOption();
     parser.addPositionalArgument(QStringLiteral("+[URL]"), i18n("Document to open."));
 
     about.setupCommandLine(&parser);
     parser.process(app);
 
     if (true) {  // TODO add a command line option for debugging the program's visual look
         //app.setStyle(new DiagnosticStyle());
     }
 
     // register ourselves as a dcop client
 	//app.dcopClient()->registerAs(app.name(), false);
 
 	KTechlab *ktechlab = new KTechlab();
 
     if (parser.positionalArguments().count() > 0) {
 		ktechlab->load( parser.positionalArguments().at(0) );
     }
 
 	ktechlab->show();
 	return app.exec();
 }
diff --git a/src/gui/CMakeLists.txt b/src/gui/CMakeLists.txt
index 77deef1c..4b85bc7c 100644
--- a/src/gui/CMakeLists.txt
+++ b/src/gui/CMakeLists.txt
@@ -1,55 +1,55 @@
 add_subdirectory(itemeditor)
 
 ########### next target ###############
 
 SET(gui_STAT_SRCS
 #    contexthelp.cpp
 #    doublespinbox.cpp
 #    itemselector.cpp
 #    microsettingsdlg.cpp
 #    newfiledlg.cpp
 #    outputmethoddlg.cpp
 #    settingsdlg.cpp
 #    oscilloscope.cpp
 #    oscilloscopeview.cpp
 #    probepositioner.cpp
 #    logview.cpp
 #    projectdlgs.cpp
 #    microselectwidget.cpp
 #    symbolviewer.cpp
 #    programmerdlg.cpp
 #    colorcombo.cpp
 #    scopescreenview.cpp
 #    scopescreen.cpp
 #    scopeviewbase.cpp
 #    richtexteditor.cpp
 #    lineedit.cpp
 )
 
 set(gui_UI
 #     asmformattingwidget.ui
 #     gpasmsettingswidget.ui
 #     logicwidget.ui
 #     newfilewidget.ui
 #     newprojectwidget.ui
 #     outputmethodwidget.ui
 #     microsettingswidget.ui
 #     oscilloscopewidget.ui
 #     generaloptionswidget.ui
 #     createsubprojectwidget.ui
 #     processingoptionswidget.ui
 #     sdccoptionswidget.ui
 #     linkeroptionswidget.ui
 #     picprogrammerconfigwidget.ui
 #     newpinmappingwidget.ui
 #     programmerwidget.ui
 #     contexthelpwidget.ui
 #     scopescreenwidget.ui
 #     gplinksettingswidget.ui
 )
 
 #kde4_add_ui_files(gui_STAT_SRCS ${gui_UI})
-qt5_wrap_ui(gui_STAT_SRCS ${gui_UI})
+ki18n_wrap_ui(gui_STAT_SRCS ${gui_UI})
 
 add_library(gui STATIC ${gui_STAT_SRCS})
 target_link_libraries( gui itemeditor )