fix bug when no digitizer connected. becasue the scalar did not setup

main.cpp

@@ -37,7 +37,7 @@ int main(int argc, char *argv[]){
         msgBox.setText("The DAQ program is already opened, or crashed perviously. \nPID is " + QString::number(pid) + "\n You can kill the procee by \"kill -9 <pid>\" and delete the " + DAQLockFile + "\n or click the \"Kill\" button");
         msgBox.setIcon(QMessageBox::Information);
     
-        QPushButton * kill = msgBox.addButton("Kill", QMessageBox::AcceptRole);
+        QPushButton * kill = msgBox.addButton("Kill and Open New", QMessageBox::AcceptRole);
 
         msgBox.setStandardButtons(QMessageBox::Ok);
         msgBox.setDefaultButton(QMessageBox::Ok);

mainwindow.cpp

@@ -34,6 +34,7 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent){
   setWindowIcon(icon);
 
   nDigi = 0;
+  nDigiConnected = 0;
   digiSetting = nullptr;
   influx = nullptr;
   readDataThread = nullptr;
@@ -594,7 +595,7 @@ void MainWindow::OpenDigitizers(){
   digi = new Digitizer2Gen*[nDigi];
   readDataThread = new ReadDataThread*[nDigi];
 
-  int nDigiConnected = 0;
+  nDigiConnected = 0;
 
   //Check path exist
   QDir dir(analysisPath + "/working/Settings/");
@@ -664,7 +665,7 @@ void MainWindow::OpenDigitizers(){
   bnProgramSettings->setEnabled(false);
   bnNewExp->setEnabled(false);
 
-  bnSOLSettings->setEnabled(CheckSOLARISpanelOK());
+  if( nDigiConnected > 0 ) bnSOLSettings->setEnabled(CheckSOLARISpanelOK());
 
 }
 
@@ -672,7 +673,7 @@ void MainWindow::CloseDigitizers(){
 
   if( digi == NULL) return;
 
-  if(scalar ){ // scalar is child of this
+  if(scalar && nDigiConnected > 0 ){ // scalar is child of this
     scalar->close();
     DeleteTriggerLineEdit(); // this use digi->GetNChannels(); 
   }
@@ -702,8 +703,6 @@ void MainWindow::CloseDigitizers(){
 
     LogMsg("Closed Digitizer : " + QString::number(digi[i]->GetSerialNumber()));
 
-    if( digiSetting != NULL )  digiSetting->close(); 
-
     if( readDataThread[i] != NULL ){
       LogMsg("Waiting for readData Thread .....");
       readDataThread[i]->quit();

mainwindow.h

@@ -92,6 +92,7 @@ private:
 
   static Digitizer2Gen ** digi; 
   unsigned short nDigi;
+  unsigned short nDigiConnected = 0;
 
   //@----- log msg
   QPlainTextEdit * logInfo;