QTableView does not show data

[waynew]

My initialization code calls the checkPrefs()
The view does appear on the desktop.
Debug statements show that the model has the correct data from the table in the correct database. Debug shows no database errors. 'open' is = "Y" and 'log' is not empty. But, the view on the desktop has no data showing in it.
What could be wrong?

void MainWindow::initializeModel(QSqlTableModel *model) {
     model->setTable("log");
     model->select();
 }
 
QTableView * MainWindow::createView(QString logTitle, QSqlTableModel *model) {
     QTableView *view = new QTableView;
     view->setModel(model);
     view->setWindowTitle(logTitle);
     return view;
    }
 
void MainWindow::checkPrefs() {
     ControlDB ctrl;
     QString open = ctrl.getOpenLastLog();
     QString log = ctrl.getLastLog();
 
     if (open == "Y") {
      if (log != "") {
         QString logName = log + "_log";
         Connection conn;
         bool base = conn.createConnection(logName);
 
         QSqlTableModel model;
         initializeModel(&model);
 
         QTableView *view1= createView(log, &model);
         model.select();
         view1->show();
      }
     }
}

void MainWindow::initializeModel(QSqlTableModel *model) {
     model->setTable("log");
     model->select();
 }

QTableView * MainWindow::createView(QString logTitle, QSqlTableModel *model) {
     QTableView *view = new QTableView;
     view->setModel(model);
     view->setWindowTitle(logTitle);
     return view;
    }

void MainWindow::checkPrefs() {
     ControlDB ctrl;
     QString open = ctrl.getOpenLastLog();
     QString log = ctrl.getLastLog();

     if (open == "Y") {
      if (log != "") {
         QString logName = log + "_log";
         Connection conn;
         bool base = conn.createConnection(logName);

         QSqlTableModel model;
         initializeModel(&model);

         QTableView *view1= createView(log, &model);
         model.select();
         view1->show();
      }
     }
}

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[ChrisW67]

It looks like your QSqlTableModel (line 24) is declared on the stack and goes out of scope before the view gets a chance to do anything with it.

[waynew]

If I put debug lines after the view1->show() I get the following:

&model is QSqlTableModel(0x22fc10)
view->model is QSqlTableModel(0x22fc10)

So shouldn't the model still exist?

The code I used came almost exactly from a Qt Example, here: http://doc.trolltech.com/4.5/sql-tab...model-cpp.html

[spirit]

try this

...
         QSqlTableModel *model = new QSqlTableModel();
         initializeModel(model);
 
         QTableView *view1= createView(log, model);
         model->select();
         view1->show();
...

...
         QSqlTableModel *model = new QSqlTableModel();
         initializeModel(model);
 
         QTableView *view1= createView(log, model);
         model->select();
         view1->show();
...

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ChrisW67 is right.

[waynew]

Thanks folks. It works great now.