Use QCommandLineParser to parse arguments.

New argument for loading plugins from given files.
Use functor whenever possible in QObject::connect.
A little bit of code cleanups.

12 files changed, 138 insertions, 160 deletions

diff --git a/.gitignore b/.gitignore
index a46a9f0..faa25d9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 # User configuration
+*.txt.user
 *.pro.user
 build/
 
diff --git a/ChangeLog b/ChangeLog
index 988aea6..bab77a9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2019-09-16 0.8.7 indev
+Use QCommandLineParser to parse arguments.
+
+New argument for loading plugins from given files.
+Use functor whenever possible in QObject::connect.
+A little bit of code cleanups.
+
 2019-09-13 0.8.7 indev
 CMake. It's happening.
 
diff --git a/qmidiplayer-desktop/main.cpp b/qmidiplayer-desktop/main.cpp
index f62429c..602aedc 100644
--- a/qmidiplayer-desktop/main.cpp
+++ b/qmidiplayer-desktop/main.cpp
@@ -20,13 +20,17 @@
 #include <QStyle>
 #include <QTranslator>
 #include <QLibraryInfo>
+#include <QCommandLineParser>
 
 int main(int argc,char **argv)
 {
 	QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
+	QCoreApplication::setApplicationName("qmidiplayer");
+	QCoreApplication::setApplicationVersion(APP_VERSION);
 	if(!qgetenv("QT_SCALE_FACTOR").length()&&!qgetenv("QT_SCREEN_SCALE_FACTORS").length())
 	QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
 	QApplication a(argc,argv);
+
 	QTranslator qtTranslator;
 	qtTranslator.load("qt_"+QLocale::system().name(),
 					  QLibraryInfo::location(QLibraryInfo::TranslationsPath));
@@ -34,7 +38,17 @@ int main(int argc,char **argv)
 	QTranslator qmpTranslator;
 	qmpTranslator.load("qmp_"+QLocale::system().name());
 	a.installTranslator(&qmpTranslator);
-	qmpMainWindow w;
+
+	QCommandLineParser clp;
+	clp.setApplicationDescription("A cross-platform MIDI player.");
+	clp.addHelpOption();
+	clp.addVersionOption();
+	clp.addPositionalArgument("file",QCoreApplication::translate("main","midi files to play (optional)."),"[files...]");
+	clp.addOption(QCommandLineOption("plugin",QCoreApplication::translate("main","Load a plugin from <plugin library>."),"plugin library"));
+	clp.addOption(QCommandLineOption({"l","load-all-files"},QCoreApplication::translate("main","Load all files from the same folder.")));
+	clp.process(a);
+
+	qmpMainWindow w(&clp);
 	if(w.parseArgs()==1)return 0;
 	w.init();
 
diff --git a/qmidiplayer-desktop/qmpchanneleditor.cpp b/qmidiplayer-desktop/qmpchanneleditor.cpp
index fbe3d50..103d612 100644
--- a/qmidiplayer-desktop/qmpchanneleditor.cpp
+++ b/qmidiplayer-desktop/qmpchanneleditor.cpp
@@ -81,13 +81,13 @@ void qmpChannelEditor::showEvent(QShowEvent *e)
 	knobpressed=0;
 	setupWindow();
 	connectSlots();
-	connect(qmpMainWindow::getInstance()->getTimer(),SIGNAL(timeout()),this,SLOT(setupWindow()));
+	updconn=connect(qmpMainWindow::getInstance()->getTimer(),&QTimer::timeout,std::bind(&qmpChannelEditor::setupWindow,this,-1));
 	e->accept();
 }
 void qmpChannelEditor::closeEvent(QCloseEvent *e)
 {
 	disconnectSlots();
-	disconnect(qmpMainWindow::getInstance()->getTimer(),SIGNAL(timeout()),this,SLOT(setupWindow()));
+	disconnect(updconn);
 	e->accept();
 }
 
@@ -106,92 +106,98 @@ void qmpChannelEditor::on_pbChRight_clicked()
 }
 
 void qmpChannelEditor::commonPressed()
-{disconnect(qmpMainWindow::getInstance()->getTimer(),SIGNAL(timeout()),this,SLOT(setupWindow()));knobpressed=1;}
+{
+	disconnect(updconn);
+	knobpressed=1;
+}
 void qmpChannelEditor::commonReleased()
-{connect(qmpMainWindow::getInstance()->getTimer(),SIGNAL(timeout()),this,SLOT(setupWindow()));sendCC();knobpressed=0;}
+{
+	updconn=connect(qmpMainWindow::getInstance()->getTimer(),&QTimer::timeout,std::bind(&qmpChannelEditor::setupWindow,this,-1));
+	sendCC();knobpressed=0;
+}
 void qmpChannelEditor::commonChanged()
 {if(knobpressed){sendCC();setupWindow();}}
 
 void qmpChannelEditor::connectSlots()
 {
-	connect(ui->dCut,SIGNAL(sliderPressed()),this,SLOT(commonPressed()));
-	connect(ui->dReso,SIGNAL(sliderPressed()),this,SLOT(commonPressed()));
-	connect(ui->dReverb,SIGNAL(sliderPressed()),this,SLOT(commonPressed()));
-	connect(ui->dChorus,SIGNAL(sliderPressed()),this,SLOT(commonPressed()));
-	connect(ui->dVol,SIGNAL(sliderPressed()),this,SLOT(commonPressed()));
-	connect(ui->dPan,SIGNAL(sliderPressed()),this,SLOT(commonPressed()));
-	connect(ui->dAttack,SIGNAL(sliderPressed()),this,SLOT(commonPressed()));
-	connect(ui->dDecay,SIGNAL(sliderPressed()),this,SLOT(commonPressed()));
-	connect(ui->dRelease,SIGNAL(sliderPressed()),this,SLOT(commonPressed()));
-	connect(ui->dRate,SIGNAL(sliderPressed()),this,SLOT(commonPressed()));
-	connect(ui->dDepth,SIGNAL(sliderPressed()),this,SLOT(commonPressed()));
-	connect(ui->dDelay,SIGNAL(sliderPressed()),this,SLOT(commonPressed()));
+	connect(ui->dCut,&QDial::sliderPressed,this,&qmpChannelEditor::commonPressed);
+	connect(ui->dReso,&QDial::sliderPressed,this,&qmpChannelEditor::commonPressed);
+	connect(ui->dReverb,&QDial::sliderPressed,this,&qmpChannelEditor::commonPressed);
+	connect(ui->dChorus,&QDial::sliderPressed,this,&qmpChannelEditor::commonPressed);
+	connect(ui->dVol,&QDial::sliderPressed,this,&qmpChannelEditor::commonPressed);
+	connect(ui->dPan,&QDial::sliderPressed,this,&qmpChannelEditor::commonPressed);
+	connect(ui->dAttack,&QDial::sliderPressed,this,&qmpChannelEditor::commonPressed);
+	connect(ui->dDecay,&QDial::sliderPressed,this,&qmpChannelEditor::commonPressed);
+	connect(ui->dRelease,&QDial::sliderPressed,this,&qmpChannelEditor::commonPressed);
+	connect(ui->dRate,&QDial::sliderPressed,this,&qmpChannelEditor::commonPressed);
+	connect(ui->dDepth,&QDial::sliderPressed,this,&qmpChannelEditor::commonPressed);
+	connect(ui->dDelay,&QDial::sliderPressed,this,&qmpChannelEditor::commonPressed);
 
-	connect(ui->dCut,SIGNAL(sliderReleased()),this,SLOT(commonReleased()));
-	connect(ui->dReso,SIGNAL(sliderReleased()),this,SLOT(commonReleased()));
-	connect(ui->dReverb,SIGNAL(sliderReleased()),this,SLOT(commonReleased()));
-	connect(ui->dChorus,SIGNAL(sliderReleased()),this,SLOT(commonReleased()));
-	connect(ui->dVol,SIGNAL(sliderReleased()),this,SLOT(commonReleased()));
-	connect(ui->dPan,SIGNAL(sliderReleased()),this,SLOT(commonReleased()));
-	connect(ui->dAttack,SIGNAL(sliderReleased()),this,SLOT(commonReleased()));
-	connect(ui->dDecay,SIGNAL(sliderReleased()),this,SLOT(commonReleased()));
-	connect(ui->dRelease,SIGNAL(sliderReleased()),this,SLOT(commonReleased()));
-	connect(ui->dRate,SIGNAL(sliderReleased()),this,SLOT(commonReleased()));
-	connect(ui->dDepth,SIGNAL(sliderReleased()),this,SLOT(commonReleased()));
-	connect(ui->dDelay,SIGNAL(sliderReleased()),this,SLOT(commonReleased()));
+	connect(ui->dCut,&QDial::sliderReleased,this,&qmpChannelEditor::commonReleased);
+	connect(ui->dReso,&QDial::sliderReleased,this,&qmpChannelEditor::commonReleased);
+	connect(ui->dReverb,&QDial::sliderReleased,this,&qmpChannelEditor::commonReleased);
+	connect(ui->dChorus,&QDial::sliderReleased,this,&qmpChannelEditor::commonReleased);
+	connect(ui->dVol,&QDial::sliderReleased,this,&qmpChannelEditor::commonReleased);
+	connect(ui->dPan,&QDial::sliderReleased,this,&qmpChannelEditor::commonReleased);
+	connect(ui->dAttack,&QDial::sliderReleased,this,&qmpChannelEditor::commonReleased);
+	connect(ui->dDecay,&QDial::sliderReleased,this,&qmpChannelEditor::commonReleased);
+	connect(ui->dRelease,&QDial::sliderReleased,this,&qmpChannelEditor::commonReleased);
+	connect(ui->dRate,&QDial::sliderReleased,this,&qmpChannelEditor::commonReleased);
+	connect(ui->dDepth,&QDial::sliderReleased,this,&qmpChannelEditor::commonReleased);
+	connect(ui->dDelay,&QDial::sliderReleased,this,&qmpChannelEditor::commonReleased);
 
-	connect(ui->dCut,SIGNAL(valueChanged(int)),this,SLOT(commonChanged()));
-	connect(ui->dReso,SIGNAL(valueChanged(int)),this,SLOT(commonChanged()));
-	connect(ui->dReverb,SIGNAL(valueChanged(int)),this,SLOT(commonChanged()));
-	connect(ui->dChorus,SIGNAL(valueChanged(int)),this,SLOT(commonChanged()));
-	connect(ui->dVol,SIGNAL(valueChanged(int)),this,SLOT(commonChanged()));
-	connect(ui->dPan,SIGNAL(valueChanged(int)),this,SLOT(commonChanged()));
-	connect(ui->dAttack,SIGNAL(valueChanged(int)),this,SLOT(commonChanged()));
-	connect(ui->dDecay,SIGNAL(valueChanged(int)),this,SLOT(commonChanged()));
-	connect(ui->dRelease,SIGNAL(valueChanged(int)),this,SLOT(commonChanged()));
-	connect(ui->dRate,SIGNAL(valueChanged(int)),this,SLOT(commonChanged()));
-	connect(ui->dDepth,SIGNAL(valueChanged(int)),this,SLOT(commonChanged()));
-	connect(ui->dDelay,SIGNAL(valueChanged(int)),this,SLOT(commonChanged()));
+	connect(ui->dCut,&QDial::valueChanged,this,&qmpChannelEditor::commonChanged);
+	connect(ui->dReso,&QDial::valueChanged,this,&qmpChannelEditor::commonChanged);
+	connect(ui->dReverb,&QDial::valueChanged,this,&qmpChannelEditor::commonChanged);
+	connect(ui->dChorus,&QDial::valueChanged,this,&qmpChannelEditor::commonChanged);
+	connect(ui->dVol,&QDial::valueChanged,this,&qmpChannelEditor::commonChanged);
+	connect(ui->dPan,&QDial::valueChanged,this,&qmpChannelEditor::commonChanged);
+	connect(ui->dAttack,&QDial::valueChanged,this,&qmpChannelEditor::commonChanged);
+	connect(ui->dDecay,&QDial::valueChanged,this,&qmpChannelEditor::commonChanged);
+	connect(ui->dRelease,&QDial::valueChanged,this,&qmpChannelEditor::commonChanged);
+	connect(ui->dRate,&QDial::valueChanged,this,&qmpChannelEditor::commonChanged);
+	connect(ui->dDepth,&QDial::valueChanged,this,&qmpChannelEditor::commonChanged);
+	connect(ui->dDelay,&QDial::valueChanged,this,&qmpChannelEditor::commonChanged);
 }
 
 void qmpChannelEditor::disconnectSlots()
 {
-	disconnect(ui->dCut,SIGNAL(sliderPressed()),this,SLOT(commonPressed()));
-	disconnect(ui->dReso,SIGNAL(sliderPressed()),this,SLOT(commonPressed()));
-	disconnect(ui->dReverb,SIGNAL(sliderPressed()),this,SLOT(commonPressed()));
-	disconnect(ui->dChorus,SIGNAL(sliderPressed()),this,SLOT(commonPressed()));
-	disconnect(ui->dVol,SIGNAL(sliderPressed()),this,SLOT(commonPressed()));
-	disconnect(ui->dPan,SIGNAL(sliderPressed()),this,SLOT(commonPressed()));
-	disconnect(ui->dAttack,SIGNAL(sliderPressed()),this,SLOT(commonPressed()));
-	disconnect(ui->dDecay,SIGNAL(sliderPressed()),this,SLOT(commonPressed()));
-	disconnect(ui->dRelease,SIGNAL(sliderPressed()),this,SLOT(commonPressed()));
-	disconnect(ui->dRate,SIGNAL(sliderPressed()),this,SLOT(commonPressed()));
-	disconnect(ui->dDepth,SIGNAL(sliderPressed()),this,SLOT(commonPressed()));
-	disconnect(ui->dDelay,SIGNAL(sliderPressed()),this,SLOT(commonPressed()));
+	disconnect(ui->dCut,&QDial::sliderPressed,this,&qmpChannelEditor::commonPressed);
+	disconnect(ui->dReso,&QDial::sliderPressed,this,&qmpChannelEditor::commonPressed);
+	disconnect(ui->dReverb,&QDial::sliderPressed,this,&qmpChannelEditor::commonPressed);
+	disconnect(ui->dChorus,&QDial::sliderPressed,this,&qmpChannelEditor::commonPressed);
+	disconnect(ui->dVol,&QDial::sliderPressed,this,&qmpChannelEditor::commonPressed);
+	disconnect(ui->dPan,&QDial::sliderPressed,this,&qmpChannelEditor::commonPressed);
+	disconnect(ui->dAttack,&QDial::sliderPressed,this,&qmpChannelEditor::commonPressed);
+	disconnect(ui->dDecay,&QDial::sliderPressed,this,&qmpChannelEditor::commonPressed);
+	disconnect(ui->dRelease,&QDial::sliderPressed,this,&qmpChannelEditor::commonPressed);
+	disconnect(ui->dRate,&QDial::sliderPressed,this,&qmpChannelEditor::commonPressed);
+	disconnect(ui->dDepth,&QDial::sliderPressed,this,&qmpChannelEditor::commonPressed);
+	disconnect(ui->dDelay,&QDial::sliderPressed,this,&qmpChannelEditor::commonPressed);
 
-	disconnect(ui->dCut,SIGNAL(sliderReleased()),this,SLOT(commonReleased()));
-	disconnect(ui->dReso,SIGNAL(sliderReleased()),this,SLOT(commonReleased()));
-	disconnect(ui->dReverb,SIGNAL(sliderReleased()),this,SLOT(commonReleased()));
-	disconnect(ui->dChorus,SIGNAL(sliderReleased()),this,SLOT(commonReleased()));
-	disconnect(ui->dVol,SIGNAL(sliderReleased()),this,SLOT(commonReleased()));
-	disconnect(ui->dPan,SIGNAL(sliderReleased()),this,SLOT(commonReleased()));
-	disconnect(ui->dAttack,SIGNAL(sliderReleased()),this,SLOT(commonReleased()));
-	disconnect(ui->dDecay,SIGNAL(sliderReleased()),this,SLOT(commonReleased()));
-	disconnect(ui->dRelease,SIGNAL(sliderReleased()),this,SLOT(commonReleased()));
-	disconnect(ui->dRate,SIGNAL(sliderReleased()),this,SLOT(commonReleased()));
-	disconnect(ui->dDepth,SIGNAL(sliderReleased()),this,SLOT(commonReleased()));
-	disconnect(ui->dDelay,SIGNAL(sliderReleased()),this,SLOT(commonReleased()));
+	disconnect(ui->dCut,&QDial::sliderReleased,this,&qmpChannelEditor::commonReleased);
+	disconnect(ui->dReso,&QDial::sliderReleased,this,&qmpChannelEditor::commonReleased);
+	disconnect(ui->dReverb,&QDial::sliderReleased,this,&qmpChannelEditor::commonReleased);
+	disconnect(ui->dChorus,&QDial::sliderReleased,this,&qmpChannelEditor::commonReleased);
+	disconnect(ui->dVol,&QDial::sliderReleased,this,&qmpChannelEditor::commonReleased);
+	disconnect(ui->dPan,&QDial::sliderReleased,this,&qmpChannelEditor::commonReleased);
+	disconnect(ui->dAttack,&QDial::sliderReleased,this,&qmpChannelEditor::commonReleased);
+	disconnect(ui->dDecay,&QDial::sliderReleased,this,&qmpChannelEditor::commonReleased);
+	disconnect(ui->dRelease,&QDial::sliderReleased,this,&qmpChannelEditor::commonReleased);
+	disconnect(ui->dRate,&QDial::sliderReleased,this,&qmpChannelEditor::commonReleased);
+	disconnect(ui->dDepth,&QDial::sliderReleased,this,&qmpChannelEditor::commonReleased);
+	disconnect(ui->dDelay,&QDial::sliderReleased,this,&qmpChannelEditor::commonReleased);
 
-	disconnect(ui->dCut,SIGNAL(valueChanged(int)),this,SLOT(commonChanged()));
-	disconnect(ui->dReso,SIGNAL(valueChanged(int)),this,SLOT(commonChanged()));
-	disconnect(ui->dReverb,SIGNAL(valueChanged(int)),this,SLOT(commonChanged()));
-	disconnect(ui->dChorus,SIGNAL(valueChanged(int)),this,SLOT(commonChanged()));
-	disconnect(ui->dVol,SIGNAL(valueChanged(int)),this,SLOT(commonChanged()));
-	disconnect(ui->dPan,SIGNAL(valueChanged(int)),this,SLOT(commonChanged()));
-	disconnect(ui->dAttack,SIGNAL(valueChanged(int)),this,SLOT(commonChanged()));
-	disconnect(ui->dDecay,SIGNAL(valueChanged(int)),this,SLOT(commonChanged()));
-	disconnect(ui->dRelease,SIGNAL(valueChanged(int)),this,SLOT(commonChanged()));
-	disconnect(ui->dRate,SIGNAL(valueChanged(int)),this,SLOT(commonChanged()));
-	disconnect(ui->dDepth,SIGNAL(valueChanged(int)),this,SLOT(commonChanged()));
-	disconnect(ui->dDelay,SIGNAL(valueChanged(int)),this,SLOT(commonChanged()));
+	disconnect(ui->dCut,&QDial::valueChanged,this,&qmpChannelEditor::commonChanged);
+	disconnect(ui->dReso,&QDial::valueChanged,this,&qmpChannelEditor::commonChanged);
+	disconnect(ui->dReverb,&QDial::valueChanged,this,&qmpChannelEditor::commonChanged);
+	disconnect(ui->dChorus,&QDial::valueChanged,this,&qmpChannelEditor::commonChanged);
+	disconnect(ui->dVol,&QDial::valueChanged,this,&qmpChannelEditor::commonChanged);
+	disconnect(ui->dPan,&QDial::valueChanged,this,&qmpChannelEditor::commonChanged);
+	disconnect(ui->dAttack,&QDial::valueChanged,this,&qmpChannelEditor::commonChanged);
+	disconnect(ui->dDecay,&QDial::valueChanged,this,&qmpChannelEditor::commonChanged);
+	disconnect(ui->dRelease,&QDial::valueChanged,this,&qmpChannelEditor::commonChanged);
+	disconnect(ui->dRate,&QDial::valueChanged,this,&qmpChannelEditor::commonChanged);
+	disconnect(ui->dDepth,&QDial::valueChanged,this,&qmpChannelEditor::commonChanged);
+	disconnect(ui->dDelay,&QDial::valueChanged,this,&qmpChannelEditor::commonChanged);
 }
diff --git a/qmidiplayer-desktop/qmpchanneleditor.hpp b/qmidiplayer-desktop/qmpchanneleditor.hpp
index 0653af5..350db1e 100644
--- a/qmidiplayer-desktop/qmpchanneleditor.hpp
+++ b/qmidiplayer-desktop/qmpchanneleditor.hpp
@@ -36,6 +36,7 @@ class qmpChannelEditor:public QDialog
 		void sendCC();
 		void connectSlots();
 		void disconnectSlots();
+		QMetaObject::Connection updconn;
 		QCommonStyle* styl;
 };
 
diff --git a/qmidiplayer-desktop/qmpchannelswindow.hpp b/qmidiplayer-desktop/qmpchannelswindow.hpp
index ab3227f..93742a2 100644
--- a/qmidiplayer-desktop/qmpchannelswindow.hpp
+++ b/qmidiplayer-desktop/qmpchannelswindow.hpp
@@ -19,37 +19,6 @@ namespace Ui {
 	class qmpChannelsWindow;
 }
 
-class QDCPushButton:public QPushButton
-{
-	Q_OBJECT
-	private:
-		int id;
-	protected:
-		void mousePressEvent(QMouseEvent *event){QPushButton::mousePressEvent(event);emit onClick(id);}
-	public:
-		QDCPushButton(QString s):QPushButton(s){id=-1;}
-		void setID(int _id){id=_id;}
-		QSize sizeHint()const{return QSize();}
-	signals:
-		void onClick(int id);
-};
-
-class QDCComboBox:public QComboBox
-{
-	Q_OBJECT
-	private:
-		int id;
-	public:
-		QDCComboBox():QComboBox(){id=-1;connect(this,SIGNAL(currentIndexChanged(int)),this,SLOT(indexChangedSlot(int)));}
-		void setID(int _id){id=_id;}
-		QSize sizeHint()const{return QSize();}
-		QSize minimumSizeHint()const{return QSize();}
-	signals:
-		void onChange(int id,int idx);
-	public slots:
-		void indexChangedSlot(int idx){emit(onChange(id,idx));}
-};
-
 class qmpChannelsWindow;
 
 class qmpChannelFunc:public qmpFuncBaseIntf
diff --git a/qmidiplayer-desktop/qmpmainwindow.cpp b/qmidiplayer-desktop/qmpmainwindow.cpp
index e097c62..76cd221 100644
--- a/qmidiplayer-desktop/qmpmainwindow.cpp
+++ b/qmidiplayer-desktop/qmpmainwindow.cpp
@@ -28,9 +28,10 @@ char* wcsto8bit(const wchar_t* s)
 
 qmpMainWindow* qmpMainWindow::ref=nullptr;
 
-qmpMainWindow::qmpMainWindow(QWidget *parent) :
+qmpMainWindow::qmpMainWindow(QCommandLineParser *_clp,QWidget *parent):
 	QMainWindow(parent),
-	ui(new Ui::qmpMainWindow)
+	ui(new Ui::qmpMainWindow),
+	clp(_clp)
 {
 	ui->setupUi(this);
 	ui->lbCurPoly->setText("00000");ui->lbMaxPoly->setText("00000");
@@ -38,7 +39,7 @@ qmpMainWindow::qmpMainWindow(QWidget *parent) :
 	setButtonHeight(ui->pbNext,36);setButtonHeight(ui->pbPlayPause,36);setButtonHeight(ui->pbAdd,36);
 	setButtonHeight(ui->pbPrev,36);setButtonHeight(ui->pbSettings,36);setButtonHeight(ui->pbStop,36);
 	playing=false;stopped=true;dragging=false;fin=false;
-	settingsw=new qmpSettingsWindow(this);pmgr=new qmpPluginManager();
+	settingsw=new qmpSettingsWindow(this);
 	player=nullptr;timer=nullptr;fluidrenderer=nullptr;
 }
 
@@ -107,7 +108,7 @@ void qmpMainWindow::init()
 	timer=new QTimer(this);
 	renderf=new qmpRenderFunc(this);
 	panicf=new qmpPanicFunc(this);
-	if(havemidi)
+	if(argfiles.size())
 	{
 		plistw->emptyList();
 		for(auto&i:argfiles)plistw->insertItem(i);
@@ -115,49 +116,34 @@ void qmpMainWindow::init()
 	registerFunctionality(renderf,"Render",tr("Render to wave").toStdString(),getThemedIconc(":/img/render.svg"),0,false);
 	registerFunctionality(panicf,"Panic",tr("Panic").toStdString(),getThemedIconc(":/img/panic.svg"),0,false);
 	registerFunctionality(reloadsynf,"ReloadSynth",tr("Restart fluidsynth").toStdString(),getThemedIconc(":/img/repeat-base.svg"),0,false);
-	pmgr->scanPlugins();settingsw->updatePluginList(pmgr);pmgr->initPlugins();
+	pmgr=new qmpPluginManager();
+	const QStringList &qpp=clp->values("plugin");
+	std::vector<std::string> pp;
+	for(auto s:qpp)
+		pp.push_back(s.toStdString());
+	pmgr->scanPlugins(pp);
+	settingsw->updatePluginList(pmgr);pmgr->initPlugins();
 	ui->vsMasterVol->setValue(qmpSettingsWindow::getSettingsIntf()->value("Audio/Gain",50).toInt());
-	connect(timer,SIGNAL(timeout()),this,SLOT(updateWidgets()));
-	connect(timer,SIGNAL(timeout()),infow,SLOT(updateInfo()));
+	connect(timer,&QTimer::timeout,this,&qmpMainWindow::updateWidgets);
+	connect(timer,&QTimer::timeout,infow,&qmpInfoWindow::updateInfo);
 	ui->pbNext->setIcon(QIcon(getThemedIcon(":/img/next.svg")));
 	ui->pbPrev->setIcon(QIcon(getThemedIcon(":/img/prev.svg")));
 	ui->pbPlayPause->setIcon(QIcon(getThemedIcon(":/img/play.svg")));
 	ui->pbStop->setIcon(QIcon(getThemedIcon(":/img/stop.svg")));
 	ui->pbSettings->setIcon(QIcon(getThemedIcon(":/img/settings.svg")));
 	ui->pbAdd->setIcon(QIcon(getThemedIcon(":/img/open.svg")));
-	if(havemidi)on_pbPlayPause_clicked();
+	if(argfiles.size())on_pbPlayPause_clicked();
 	setupWidget();settingsw->verifySF();
 }
 
 int qmpMainWindow::parseArgs()
 {
-	bool loadfolder=false;havemidi=false;
-	QStringList args=QApplication::arguments();
-	for(int i=1;i<args.size();++i)
+	bool loadfolder=clp->isSet("load-all-files");
+	const QStringList &args=clp->positionalArguments();
+	for(int i=0;i<args.size();++i)
 	{
-		if(args.at(i).at(0)=='-')
-		{
-			if(args.at(i)==QString("--help"))
-			{
-				printf("Usage: %s [Options] [Midi Files]\n",args.at(0).toStdString().c_str());
-				printf("Possible options are: \n");
-				printf("  -l, --load-all-files  Load all files from the same folder.\n");
-				printf("  --help                Show this help and exit.\n");
-				printf("  --version             Show this version information and exit.\n");
-				return 1;
-			}
-			if(args.at(i)==QString("--version"))
-			{
-				printf("QMidiPlayer %s\n",APP_VERSION);
-				return 1;
-			}
-			if(args.at(i)==QString("-l")||args.at(i)==QString("--load-all-files"))
-				loadfolder=true;
-		}
-		else
 		if(QFileInfo(args.at(i)).exists())
 		{
-			if(!havemidi)havemidi=true;
 			if(loadfolder||qmpSettingsWindow::getSettingsIntf()->value("Behavior/LoadFolder",0).toInt())
 			{
 				QDirIterator di(QFileInfo(args.at(i)).absolutePath());
@@ -665,7 +651,7 @@ void qmpMainWindow::setupWidget()
 		pb->setIconSize(QSize(16,16));
 		ui->buttonwidget->layout()->addWidget(pb);
 		mfunc[enabled_buttons[i]].setAssignedControl(pb);
-		connect(pb,SIGNAL(onClick(std::string)),this,SLOT(funcReflector(std::string)));
+		connect(pb,&QReflectivePushButton::onClick,this,&qmpMainWindow::funcReflector);
 	}
 	for(unsigned i=0;i<enabled_actions.size();++i)
 	{
@@ -677,7 +663,7 @@ void qmpMainWindow::setupWidget()
 		);
 		ui->lbFileName->addAction(a);
 		mfunc[enabled_actions[i]].setAssignedControl(a);
-		connect(a,SIGNAL(onClick(std::string)),this,SLOT(funcReflector(std::string)));
+		connect(a,&QReflectiveAction::onClick,this,&qmpMainWindow::funcReflector);
 	}
 	ui->buttonwidget->layout()->setAlignment(Qt::AlignLeft);
 }
diff --git a/qmidiplayer-desktop/qmpmainwindow.hpp b/qmidiplayer-desktop/qmpmainwindow.hpp
index 262bc2e..a95d1fe 100644
--- a/qmidiplayer-desktop/qmpmainwindow.hpp
+++ b/qmidiplayer-desktop/qmpmainwindow.hpp
@@ -14,6 +14,7 @@
 #include <QSlider>
 #include <QPointer>
 #include <QApplication>
+#include <QCommandLineParser>
 #include <thread>
 #include <chrono>
 #include <future>
@@ -60,14 +61,10 @@ class QReflectiveAction:public QAction
 		std::string reflt;
 	signals:
 		void onClick(std::string s);
-	private slots:
-		void triggerslot(){
-			emit(onClick(reflt));
-		}
 	public:
 		explicit QReflectiveAction(const QIcon& icon,const QString& text,const std::string& ref):
 		QAction(icon,text,nullptr),reflt(ref){
-			connect(this,SIGNAL(triggered(bool)),this,SLOT(triggerslot()));
+			connect(this,&QAction::triggered,std::bind(&QReflectiveAction::onClick,this,reflt));
 		}
 };
 
@@ -78,14 +75,10 @@ class QReflectivePushButton:public QPushButton
 		std::string reflt;
 	signals:
 		void onClick(std::string s);
-	private slots:
-		void clickslot(){
-			emit(onClick(reflt));
-		}
 	public:
 		explicit QReflectivePushButton(const QIcon& icon,const QString& text,const std::string& ref):
 		QPushButton(icon,""),reflt(ref){
-			connect(this,SIGNAL(clicked(bool)),this,SLOT(clickslot()));
+			connect(this,&QPushButton::clicked,std::bind(&QReflectivePushButton::onClick,this,reflt));
 			setToolTip(text);
 		}
 };
@@ -141,7 +134,7 @@ class qmpMainWindow:public QMainWindow
 	Q_OBJECT
 
 	public:
-		explicit qmpMainWindow(QWidget *parent = 0);
+		explicit qmpMainWindow(QCommandLineParser *clp,QWidget *parent=nullptr);
 		void init();
 		void closeEvent(QCloseEvent *event);
 		void dropEvent(QDropEvent *event);
@@ -195,7 +188,7 @@ class qmpMainWindow:public QMainWindow
 	private:
 		Ui::qmpMainWindow *ui;
 		QTimer *timer;
-		bool playing,stopped,dragging,fin,havemidi;
+		bool playing,stopped,dragging,fin;
 		std::thread *playerTh=nullptr;
 		std::thread *renderTh=nullptr;
 		std::chrono::steady_clock::time_point st;
@@ -217,6 +210,7 @@ class qmpMainWindow:public QMainWindow
 		qmpReloadSynthFunc* reloadsynf;
 		std::vector<std::string> enabled_buttons,enabled_actions;
 		std::vector<QString> argfiles;
+		QCommandLineParser *clp;
 
 		void onfnChanged();
 		void playerSetup(IFluidSettings *fs);
diff --git a/qmidiplayer-desktop/qmpplistwindow.cpp b/qmidiplayer-desktop/qmpplistwindow.cpp
index ca6e8fc..667682e 100644
--- a/qmidiplayer-desktop/qmpplistwindow.cpp
+++ b/qmidiplayer-desktop/qmpplistwindow.cpp
@@ -20,7 +20,7 @@ qmpPlistWindow::qmpPlistWindow(QWidget *parent) :
 	setButtonHeight(ui->pbClear,36);setButtonHeight(ui->pbLoad,36);
 	setButtonHeight(ui->pbRemove,36);setButtonHeight(ui->pbRepeat,36);
 	setButtonHeight(ui->pbSave,36);setButtonHeight(ui->pbShuffle,36);
-	connect(this,SIGNAL(selectionChanging()),parent,SLOT(selectionChanged()));
+	connect(this,&qmpPlistWindow::selectionChanging,(qmpMainWindow*)parent,&qmpMainWindow::selectionChanged);
 	repeat=0;shuffle=0;
 	if(qmpSettingsWindow::getSettingsIntf()->value("Behavior/RestorePlaylist","").toInt())
 	{
diff --git a/qmidiplayer-desktop/qmpplugin.cpp b/qmidiplayer-desktop/qmpplugin.cpp
index 2339625..1c83524 100644
--- a/qmidiplayer-desktop/qmpplugin.cpp
+++ b/qmidiplayer-desktop/qmpplugin.cpp
@@ -49,10 +49,10 @@ void qmpPluginManager::scanPlugins()
 	}
 }
 #else
-void qmpPluginManager::scanPlugins()
+void qmpPluginManager::scanPlugins(const std::vector<std::string> &pp)
 {
 	QDirIterator *dir;
-	std::vector<std::string> cpluginpaths;
+	std::vector<std::string> cpluginpaths(pp);
 #ifdef QMP_BUILD_UNIX_PACKAGE
 	dir=new QDirIterator("/usr/lib/qmidiplayer/");
 	while(dir->hasNext())
diff --git a/qmidiplayer-desktop/qmpplugin.hpp b/qmidiplayer-desktop/qmpplugin.hpp
index 512fc35..be10b12 100644
--- a/qmidiplayer-desktop/qmpplugin.hpp
+++ b/qmidiplayer-desktop/qmpplugin.hpp
@@ -21,7 +21,7 @@ class qmpPluginManager
 		qmpPluginManager();
 		~qmpPluginManager();
 		std::vector<qmpPlugin> *getPlugins();
-		void scanPlugins();
+		void scanPlugins(const std::vector<std::string> &pp);
 		void initPlugins();
 		void deinitPlugins();
 };
diff --git a/qmidiplayer-desktop/qmpsettingswindow.cpp b/qmidiplayer-desktop/qmpsettingswindow.cpp
index 08a76fd..5c5c7b0 100644
--- a/qmidiplayer-desktop/qmpsettingswindow.cpp
+++ b/qmidiplayer-desktop/qmpsettingswindow.cpp
@@ -22,7 +22,7 @@ qmpSettingsWindow::qmpSettingsWindow(QWidget *parent) :
 	ui(new Ui::qmpSettingsWindow)
 {
 	ui->setupUi(this);customOptions.clear();customOptPages.clear();
-	connect(this,SIGNAL(dialogClosing()),parent,SLOT(dialogClosed()));
+	connect(this,&qmpSettingsWindow::dialogClosing,(qmpMainWindow*)parent,&qmpMainWindow::dialogClosed);
 	settings=new QSettings(QDir::homePath()+QString("/.config/qmprc"),QSettings::IniFormat);
 	settingsInit();outwidget=ui->cbOutputDevice;
 	ui->pbAdd->setIcon(QIcon(getThemedIcon(":/img/add.svg")));
@@ -732,7 +732,7 @@ QFileEdit::QFileEdit(QWidget *par):QWidget(par)
 	tb=new QToolButton(this);
 	tb->setText("...");
 	layout->addWidget(tb);
-	connect(tb,SIGNAL(clicked()),this,SLOT(chooseFile()));
+	connect(tb,&QToolButton::clicked,this,&QFileEdit::chooseFile);
 }
 QString QFileEdit::text(){return le->text();}
 void QFileEdit::setText(const QString& s){le->setText(s);}