Qt process ends forcefully when manipulating widgets

elbix

Greetings to all.

I'm trying to run a Qt Widgets Application but everytime I try to modify a specific widget on a Dialog (not MainWindow, everything works fine in that file) the program crashes and the process end forcefully with the following messages:

23:26:51: The program has unexpectedly finished.
23:26:51: The process was ended forcefully.

I'm not quite sure what is the situation here. I have an object that runs some queries in order to fill 6 QHash containers and a QSqlDatabase object as well as class members but that's it.

TLDR: Program crashes when trying to access ui members and operations in a specific Dialog diferent from Main Window.

dheerendra

Crash means you definitely accessing some invalid pointer. Can show your sample code where it fails ?

elbix

@dheerendra

ui->label_nombre->setText(zeze);

It happens with any Widget, wether it is a label, qlistwidget, qlineedit, etc.

Is the ui pointer set up in a wrong way? This is the Dialog class:

#ifndef STORE_H
#define STORE_H

#include <QDialog>
#include <administrador.h>
#include <QMessageBox>

namespace Ui {
class Store;
}

class Store : public QDialog
{
Q_OBJECT

public:
explicit Store(QWidget *parent = nullptr);
~Store();

private:
Ui::Store *ui;
administrador admin;
QSqlDatabase db;
};

elbix

@dheerendra

this is the constructor definition

Store::Store(QWidget *parent) :
QDialog(parent),
ui(new Ui::Store)
{
setWindowTitle("Tienda");
db = QSqlDatabase::database();
admin.fillContainers();

QHash<QString,sucursal> sucursales = admin.getSucursales();
QHash<QString, celular> celulares = admin.getCelulares();
QHash<QString, solicitudCompra> solicitudes = admin.getSolicitudes();
QHash<QString, compra> compras = admin.getCompras();
QHash<QString, documento> documentos = admin.getDocumentos();
QHash<QString, Cliente> clientes = admin.getClientes();

sucursal sanAndres = sucursales["idSuc1"];
sucursal sonata = sucursales["idSuc2"];
sucursal pte = sucursales["idSuc3"];
sucursal serdan = sucursales["idSuc4"];
sucursal ange = sucursales["idSuc5"];

QHash<QString,celular>::iterator celtemp;
celular celtemporal;

celtemp = celulares.find("idXR");
QString zeze = celtemp.value().getAtributo(0);
qDebug() << zeze;
ui->label_nombre->setText(zeze);

ui->setupUi(this);

}

SGaist

Hi and welcome to devnet,

ui->setupUi(this);

must be called prior to any access to anything you added through designer.

elbix

@SGaist

Thanks a lot!

This fixed the error annd the project now runs smoothly. I'm really new to this tool but I promise I'll never forget your help.

God bless you, hope you have a great day.