Added detected screen refresh rate display to Qt video config window. Minor memory fixes.

src/drivers/Qt/ConsoleDebugger.cpp

@@ -1092,7 +1092,6 @@ void ConsoleDebugger::buildPpuListDisplay(void)
 	ppuStatContainerWidget = new QWidget(this);
 	ppuStatContainerWidget->setSizePolicy( QSizePolicy::Maximum, QSizePolicy::Maximum );
 
-	vbox1       = new QVBoxLayout();
 	ppuFrame    = new QFrame();
 	grid        = new QGridLayout();
 

src/drivers/Qt/ConsoleVideoConf.cpp

@@ -37,8 +37,8 @@
 ConsoleVideoConfDialog_t::ConsoleVideoConfDialog_t(QWidget *parent)
 	: QDialog( parent )
 {
-	QVBoxLayout *main_vbox, *vbox1, *vbox2;
-	QHBoxLayout *main_hbox, *hbox1;
+	QVBoxLayout *main_vbox, *vbox1, *vbox2, *vbox;
+	QHBoxLayout *main_hbox, *hbox1, *hbox;
 	QLabel *lbl;
 	QPushButton *button;
 	QStyle *style;
@@ -46,6 +46,7 @@ ConsoleVideoConfDialog_t::ConsoleVideoConfDialog_t(QWidget *parent)
 	QGridLayout *grid;
 	QFont font;
 	int opt, fontCharWidth;
+	char stmp[128];
 
 	font.setFamily("Courier New");
 	font.setStyle( QFont::StyleNormal );
@@ -412,10 +413,25 @@ ConsoleVideoConfDialog_t::ConsoleVideoConfDialog_t(QWidget *parent)
 	setCheckBoxFromProperty( cursorVisCbx, "SDL.CursorVis" );
 	grid->addWidget( cursorVisCbx, 1, 0, 2, 1, Qt::AlignLeft);
 
-	//grid->addWidget( drawInputAidsCbx, 2, 0, 2, 1, Qt::AlignLeft);
-
 	connect(cursorVisCbx    , SIGNAL(stateChanged(int)), this, SLOT(cursorVisChanged(int)) );
 
+	vbox  = new QVBoxLayout();
+	hbox  = new QHBoxLayout();
+	gbox  = new QGroupBox( tr("Screen") );
+	gbox->setLayout( vbox );
+
+	scrRateReadout = new QLineEdit();
+	scrRateReadout->setFont( font );
+	scrRateReadout->setReadOnly(true);
+	scrRateReadout->setAlignment(Qt::AlignCenter);
+	sprintf( stmp, "%.3f", consoleWindow->getRefreshRate() );
+	scrRateReadout->setText( tr(stmp) );
+
+	hbox->addWidget( new QLabel( tr("Refresh Rate (Hz):") ) );
+	hbox->addWidget( scrRateReadout );
+	vbox->addLayout( hbox );
+
+	vbox2->addWidget( gbox );
 	vbox2->addStretch( 5 );
 
 	setLayout( main_vbox );

src/drivers/Qt/ConsoleVideoConf.h

@@ -59,6 +59,7 @@ class ConsoleVideoConfDialog_t : public QDialog
 		QSpinBox       *pal_end;
 		QLineEdit      *winSizeReadout;
 		QLineEdit      *vpSizeReadout;
+		QLineEdit      *scrRateReadout;
 
 		void  setCheckBoxFromProperty( QCheckBox *cbx, const char *property );
 		void  setComboBoxFromProperty( QComboBox *cbx, const char *property );

src/drivers/Qt/ConsoleWindow.cpp

@@ -214,6 +214,7 @@ consoleWin_t::consoleWin_t(QWidget *parent)
 		this->showFullScreen();
 	}
 
+	refreshRate = 0.0;
 	updateCounter = 0;
 	recentRomMenuReset = false;
 
@@ -369,6 +370,7 @@ void consoleWin_t::winScreenChanged(QScreen *scr)
 	{
 		return;
 	}
+	refreshRate = scr->refreshRate();
 	//printf("Screen Refresh Rate: %f\n", scr->refreshRate() );
 
 	//printf("Screen Changed: %p\n", scr );

src/drivers/Qt/ConsoleWindow.h

@@ -152,6 +152,8 @@ class  consoleWin_t : public QMainWindow
 
 		int loadVideoDriver( int driverId );
 
+		double getRefreshRate(void){ return refreshRate; }
+
 		emulatorThread_t *emulatorThread;
 		AviRecordDiskThread_t *aviDiskThread;
 
@@ -258,6 +260,7 @@ class  consoleWin_t : public QMainWindow
 		std::vector <autoFireMenuAction*> afActList;
 		autoFireMenuAction *afActCustom;
 
+		double       refreshRate;
 		unsigned int updateCounter;
 	protected:
 		void resizeEvent(QResizeEvent *event) override;

src/drivers/Qt/sdl-joystick.cpp

@@ -460,6 +460,11 @@ int GamePad_t::convText2ButtConfig( const char *txt, ButtConfig *bmap )
 	bmap->DeviceNum = -1;
 	bmap->ButtonNum = -1;
 
+	if (txt[0] == 0 )
+	{
+		return 0;
+	}
+
 	if (txt[0] == 'k')
 	{
 		SDL_Keycode key;
@@ -718,7 +723,7 @@ int GamePad_t::loadHotkeyMapFromFile(const char *filename)
 	char line[256];
 	char id[128];
 	char val[128];
-	bool lineIsHotKey;
+	bool lineIsHotKey = false;
 	char modBtn[32], priBtn[32];
 	char onPressAct[64], onReleaseAct[64];