ListWidget itemClicked problem

[Keemosabi]

I have just started learning Qt and have tried to write a simple little application which has a ListWidget and a LineEdit. When the user clicks an item in the ListWidget the text should appear in the LineEdit. It compiles and runs but when the item is clicked a segmentation fault occurs. I have searched through many examples but can't find one which is close enough to what I am trying to do to help. I would be grateful if someone could assist by pointing out where I have gone wrong. It's probably something very basic.

#ifndef MYDIALOG_H
#define MYDIALOG_H
 
#include <QDialog>
#include <QListWidgetItem>
 
class QLineEdit;
 
class MyDialog : public QDialog
{
	Q_OBJECT
 
public:
	MyDialog(QWidget *parent = 0);
	QLineEdit *result;
 
public slots:
	void nameToLE(QListWidgetItem *item);
 
};
 
#endif
 
#include <QListWidgetItem>
 
MyDialog::MyDialog(QWidget *parent)
	: QDialog(parent)
{
	QVBoxLayout* mainLayout = new QVBoxLayout(this);
	QListWidget* staffList = new QListWidget();
	QLineEdit* result = new QLineEdit();
 
	mainLayout->addWidget(staffList);
	mainLayout->addWidget(result);
 
	staffList->addItem("Fred Smith");
	staffList->addItem("Billy Bloggs");
 
	setWindowTitle(tr("Tone's Dialog"));
 
	connect(staffList, SIGNAL(itemClicked(QListWidgetItem*)),
	this, SLOT(nameToLE(QListWidgetItem*)));
}
 
void MyDialog::nameToLE(QListWidgetItem *item)
{
	result->setText(item->text());
}

#ifndef MYDIALOG_H
#define MYDIALOG_H

#include <QDialog>
#include <QListWidgetItem>

class QLineEdit;

class MyDialog : public QDialog
{
	Q_OBJECT

public:
	MyDialog(QWidget *parent = 0);
	QLineEdit *result;
	
public slots:
	void nameToLE(QListWidgetItem *item);
	
};

#endif

#include <QListWidgetItem>

MyDialog::MyDialog(QWidget *parent)
	: QDialog(parent)
{
	QVBoxLayout* mainLayout = new QVBoxLayout(this);
	QListWidget* staffList = new QListWidget();
	QLineEdit* result = new QLineEdit();

	mainLayout->addWidget(staffList);
	mainLayout->addWidget(result);

	staffList->addItem("Fred Smith");
	staffList->addItem("Billy Bloggs");

	setWindowTitle(tr("Tone's Dialog"));

	connect(staffList, SIGNAL(itemClicked(QListWidgetItem*)),
	this, SLOT(nameToLE(QListWidgetItem*)));
}

void MyDialog::nameToLE(QListWidgetItem *item)
{
	result->setText(item->text());
}

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[jacek]

You have two result variables. One is a member of MyDialog, the second is a local variable in MyDialog constructor.

[Keemosabi]

Thanks for your help Jacek.

I changed line31 from

QLineEdit* result = new QLineEdit();

QLineEdit* result = new QLineEdit();

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to

result = new QLineEdit;

result = new QLineEdit;

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and it now works.