Application crashes

[waynew]

I know I'm doing something wrong here, but I can't see it.
The following application crashes on the line commented when it tries to put the value received from the query into the dialog form.
No crash if I comment that line out.
Can anyone please tell me what I have wrong?

#include "makeStnDB.h"
#include <iostream>
#include <QString>
#include <QtSql>
#include "stninfodialog.h"
#include <QDialog>
#include <QtGui>
 
#include "ui_stninfodialog.h"
 
#include <QDebug>
 
 
bool makeStnDB() {
   QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
   db.setDatabaseName("StnInfo.sqlite");
   db.open();
 
   QSqlQuery query;
        query.exec("CREATE table stnInfo(id int primary key,call varchar(8),name varchar(80), "
      "address1 varchar(80),address2 varchar(80),city varchar(80),state varchar(80), "
      "postalCode varchar(20),country varchar(40),grid varchar(8), "
      "cqZone varchar(8),ituZone varchar(8),latitude varchar(8), "
      "longitude varchar(8),licenseClass varchar(12))");
 
   //Check to see if stninfo exists...
   query.exec("SELECT call, name, address1, address2, city, state, postalCode, country, grid, cqZone, ituZone, latitude, longitude, licenseClass FROM stnInfo");
 
      StnInfoDialog *StnInfoD = new StnInfoDialog();
 
      Ui_StnInfoDialog *stn = new Ui_StnInfoDialog();
 
   if (!query.next()) {
      // show the entry form if record not exists
      StnInfoD->exec();
      StnInfoD->raise();
      // need to insert data on 'ok' click
   } else {
      // if record exists retrieve the data and display it
      QString call = query.value(0).toString();
      qDebug() << call; // value ok in console
      stn -> call -> setText(call); // CRASHES ON THIS LINE
 
   }
   return query.exec();
}

#include "makeStnDB.h"
#include <iostream>
#include <QString>
#include <QtSql>
#include "stninfodialog.h"
#include <QDialog>
#include <QtGui>

#include "ui_stninfodialog.h"

#include <QDebug>


bool makeStnDB() {
   QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
   db.setDatabaseName("StnInfo.sqlite");
   db.open();

   QSqlQuery query;
        query.exec("CREATE table stnInfo(id int primary key,call varchar(8),name varchar(80), "
      "address1 varchar(80),address2 varchar(80),city varchar(80),state varchar(80), "
      "postalCode varchar(20),country varchar(40),grid varchar(8), "
      "cqZone varchar(8),ituZone varchar(8),latitude varchar(8), "
      "longitude varchar(8),licenseClass varchar(12))");

   //Check to see if stninfo exists...
   query.exec("SELECT call, name, address1, address2, city, state, postalCode, country, grid, cqZone, ituZone, latitude, longitude, licenseClass FROM stnInfo");

      StnInfoDialog *StnInfoD = new StnInfoDialog();

      Ui_StnInfoDialog *stn = new Ui_StnInfoDialog();

   if (!query.next()) {
      // show the entry form if record not exists
      StnInfoD->exec();
      StnInfoD->raise();
      // need to insert data on 'ok' click
   } else {
      // if record exists retrieve the data and display it
      QString call = query.value(0).toString();
      qDebug() << call; // value ok in console
      stn -> call -> setText(call); // CRASHES ON THIS LINE

   }
   return query.exec();
}

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[RSX]

QString call = query.value(0).toString();
qDebug() << call; // value ok in console
stn -> call -> setText(call); // CRASHES ON THIS LINE

QString call = query.value(0).toString();
qDebug() << call; // value ok in console
stn -> call -> setText(call); // CRASHES ON THIS LINE

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If you are trying to access setText with -> then it means call from stn should be allocated on heap (with operator new). Now you are trying to access a call that doesn't exist.

You didn't say anything about where you are trying to apply the call value. Is it some kind of new dialog with QLabel on it?