Hi,

I want to show Data from a Relational DB in a QTableView.
This work fine, also the editing about OnManualSubmit works. Now I want to add and delete Rows in the QTableView. When I tray to add a row an error occurs:

Segmentation fault (core dumped)
*** Exited with status: 139 ***

What does this error means?

I think its a memory lack but I don't know what to do?
I work on Ubuntu Feisty, QT 4.2.3, KDevelop 3.4

Qt Code: 
  1. #include <QtGui> 
  2. #include <QtSql> 
  3. #include <QDebug> 
  4. #include "tablemodel.h" 
  5.  
  6. tableModel::tableModel() 
  7. { 
  8.  
  9.    QPushButton *submitPb = new QPushButton(QObject::trUtf8("Änderungen speichern")); 
  10.    QPushButton *revertPb = new QPushButton(QObject::trUtf8("Änderungen verwerfen")); 
  11.    QPushButton *addPb = new QPushButton(QObject::trUtf8("Neue Person")); 
  12.    QPushButton *deletePb = new QPushButton(QObject::trUtf8("Lösche Person")); 
  13.  
  15.    model->setTable("tx_submission_data"); 
  16.    model->setRelation(28,QSqlRelation("tx_submission_epterm","uid", "epterm")); 
  17.    model->setRelation(29,QSqlRelation("tx_submission_status","uid", "status")); 
  18.    model->setRelation(30,QSqlRelation("tx_submission_status","uid", "status")); 
  19.    model->setRelation(31,QSqlRelation("tx_submission_status","uid", "status")); 
  20.    model->setRelation(32,QSqlRelation("tx_submission_status","uid", "status")); 
  21.    model->setRelation(33,QSqlRelation("tx_submission_status","uid", "status")); 
  22.    model->setRelation(34,QSqlRelation("tx_submission_status","uid", "status")); 
  23.    model->setEditStrategy(QSqlTableModel::OnManualSubmit); 
  24.  
  25.  
  26.    model->removeColumns(1,7); 
  27.    model->removeColumn(5); 
  28.    model->removeColumn(6); 
  29.    model->removeColumn(6); 
  30.    model->removeColumn(6); 
  31.    model->removeColumn(7); 
  32.    model->removeColumn(7); 
  33.    model->removeColumn(7); 
  34.    model->removeColumn(7); 
  35.    model->removeColumn(7); 
  36.    model->removeColumn(7); 
  37.    model->removeColumn(7); 
  38.    model->removeColumn(8); 
  39.    model->removeColumn(11); 
  40.  
  41.    model->select(); 
  42.  
  43.    QTableView *viewTable = new QTableView; 
  44.    viewTable->setModel(model); 
  45.    viewTable->setItemDelegate(new QSqlRelationalDelegate(this)); 
  46.    viewTable->setSortingEnabled(TRUE); 
  47.    viewTable->setAlternatingRowColors(TRUE); 
  48.    //viewTable->hideColumn(0);    
  49.    viewTable->setSelectionMode(QAbstractItemView::SingleSelection); 
  50.    viewTable->setSelectionBehavior(QAbstractItemView::SelectRows); 
  51.    viewTable->resizeColumnsToContents(); 
  52.  
  53.    connect(submitPb, SIGNAL(clicked(bool)), model, SLOT(submitAll()) ); 
  54.    connect(revertPb, SIGNAL(clicked(bool)), model, SLOT(revertAll() ) ); 
  55.  
  56.    connect(addPb, SIGNAL(clicked(bool)), this, SLOT(addPerson() ) ); 
  57.    connect(deletePb, SIGNAL(clicked(bool)), this, SLOT(deletePerson() ) ); 
  58.  
  59.    QGridLayout *lay = new QGridLayout(this); 
  60.    lay->addWidget(viewTable, 0, 0, 1, 4); 
  61.    lay->addWidget(submitPb, 1, 0); 
  62.    lay->addWidget(revertPb, 1, 1); 
  63.    lay->addWidget(addPb, 1, 2); 
  64.    lay->addWidget(deletePb, 1, 3); 
  65.  
  66.    // CSS 
  67.    qApp->setStyleSheet("QTableView {background-color: #eeeeee; background-image: url(:/bg.png); color: blue;}"); 
  68. } 
  69.  
  70. void tableModel::addPerson() 
  71. { 
  72.    int row = model->rowCount();
  73. 	model->insertRow(row);
  74. 	QModelIndex index = model->index(row, Person_Name);
  75. 	viewTable->setCurrentIndex(index);
  76. 	viewTable->edit(index);
  77.  
  78.    QMessageBox::warning(this, trUtf8("Person hinzufügen"), trUtf8("Sie müssen alle Felder ausfüllen!") ); 
  79. } 
  80.  
  81. void tableModel::deletePerson() 
  82. { 
  83.  
  84. } 
  85.  
  86.  
  87.  
  88. tableModel::~tableModel() 
  89. { 
  90.  
  91. }
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Person_Name = 1 (Column with persons name)