Open and display a document on a window

[Stanfillirenfro]

Hello!
I want to open a text document and to display it on my window. The process has two actions: Opening the file and displaying it on the window. Theoritically, two slots are expected, and two bottons too to be clicked on. But practically, it seems not feasible, since a click on the open button should display the data on the window.
If I click on m_open (see below), a dialog window for the selection of the file will open. I have to selcet this file, click on "open" button of the Dialog window and then the window dissapears.

Line 8 of .cpp: The text erea shoul dremain hide until the data a ready to be display, and will appear with the line 25 of .cpp.
On the line 27 of .cpp file, I display the data on the window. If is not here, I must create another slot, that requires another button, because when I am connecting the button "m_open" to this slot (to open the file) and to another(to display the data), the compilation fails.

My questions:
1- Is there a way to connect the button open of the dialog window (when opening a file) to a slot in order to display my data on my window? If not, how to proceed?

Many thanks in advance.

Here is my code:

.h flie

#ifndef DEF_MYWINDOW
   #define DEF_MYWINDOW
 
   #include <QtGui>
 
 
   class MyWindow: public QMainWindow
   {
   Q_OBJECT
 
   public:
   explicit MyWindow();
   virtual ~MyWindow();
 
   public slots:
   void openFile();
 
   private:
   QAction *m_open;
   QTextEdit *m_myText;
   QWidget *m_centralZone;
   QMenu *m_menuFile; 
   QLineEdit *m_openAFile;
 
};
 
   #endif // MYWINDOW_H

#ifndef DEF_MYWINDOW
   #define DEF_MYWINDOW
     
   #include <QtGui>
     
        
   class MyWindow: public QMainWindow
   {
   Q_OBJECT
     
   public:
   explicit MyWindow();
   virtual ~MyWindow();
     
   public slots:
   void openFile();
     
   private:
   QAction *m_open;
   QTextEdit *m_myText;
   QWidget *m_centralZone;
   QMenu *m_menuFile; 
   QLineEdit *m_openAFile;
 
};
     
   #endif // MYWINDOW_H

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.cpp file

#include "myWindow.h"
 
myWindow::myWindow()
{
  m_menuFile = menuBar()->addMenu("&File");
 
  m_myText = new QTextEdit(m_centralZone);
  m_myText->setVisible(false);
 
  m_open = m_menuFile->addAction("Open a file");
 
  m_openAFile = new QLineEdit;
 
 connect(m_open, SIGNAL(triggered()), this, SLOT(openFile()));
 
 
  setCentralWidget(centralZone);
}
 
void myWindow::openFile()
{
   QString file = QFileDialog::getOpenFileName(this, "Information", "Open", "*.text");
    m_openAFile->setPlainText(file);
 
    myText->setVisible(true);
 
    myText->setText(text);
 
}

#include "myWindow.h"
  
myWindow::myWindow()
{
  m_menuFile = menuBar()->addMenu("&File");

  m_myText = new QTextEdit(m_centralZone);
  m_myText->setVisible(false);

  m_open = m_menuFile->addAction("Open a file");

  m_openAFile = new QLineEdit;

 connect(m_open, SIGNAL(triggered()), this, SLOT(openFile()));
   

  setCentralWidget(centralZone);
}
 
void myWindow::openFile()
{
   QString file = QFileDialog::getOpenFileName(this, "Information", "Open", "*.text");
    m_openAFile->setPlainText(file);

    myText->setVisible(true);

    myText->setText(text);
  
}

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[Santosh Reddy]

I guess this is what you wanted

#include <QtGui>
 
class MyWindow: public QMainWindow
{
    Q_OBJECT
 
public:
    explicit MyWindow();
    virtual ~MyWindow() {};
 
signals:
    void fileSelected(const QString & filename);
 
public slots:
    void openFile();
    void loadFile(const QString & filename);
 
private:
    QAction *m_open;
    QTextEdit *m_myText;
    QWidget *m_centralZone;
    QMenu *m_menuFile;
    QLineEdit *m_openAFile;
};
 
MyWindow::MyWindow() : QMainWindow()
{
    m_menuFile = menuBar()->addMenu("&File");
 
    m_myText = new QTextEdit(m_centralZone);
    m_myText->setVisible(false);
 
    m_open = m_menuFile->addAction("Open a file");
 
    m_openAFile = new QLineEdit;
 
    connect(m_open, SIGNAL(triggered()), this, SLOT(openFile()));
    connect(this, SIGNAL(fileSelected(QString)), this, SLOT(loadFile(QString)));
 
    setCentralWidget(m_centralZone);
}
 
void MyWindow::openFile()
{
    QString file = QFileDialog::getOpenFileName(this, "Information", "Open", "*.text");
    m_openAFile->setText(file);
    emit fileSelected(file);
}
 
void MyWindow::loadFile(const QString & filename)
{
    QFile file(filename);
    if(file.open(file.Text | file.ReadOnly))
    {
        QString text = file.readAll();
        m_myText->setText(text);
    }
    else
        m_myText->setText("Error Opening File");
 
    m_myText->setVisible(true);
}

#include <QtGui>

class MyWindow: public QMainWindow
{
    Q_OBJECT

public:
    explicit MyWindow();
    virtual ~MyWindow() {};

signals:
    void fileSelected(const QString & filename);

public slots:
    void openFile();
    void loadFile(const QString & filename);

private:
    QAction *m_open;
    QTextEdit *m_myText;
    QWidget *m_centralZone;
    QMenu *m_menuFile;
    QLineEdit *m_openAFile;
};

MyWindow::MyWindow() : QMainWindow()
{
    m_menuFile = menuBar()->addMenu("&File");

    m_myText = new QTextEdit(m_centralZone);
    m_myText->setVisible(false);

    m_open = m_menuFile->addAction("Open a file");

    m_openAFile = new QLineEdit;

    connect(m_open, SIGNAL(triggered()), this, SLOT(openFile()));
    connect(this, SIGNAL(fileSelected(QString)), this, SLOT(loadFile(QString)));

    setCentralWidget(m_centralZone);
}

void MyWindow::openFile()
{
    QString file = QFileDialog::getOpenFileName(this, "Information", "Open", "*.text");
    m_openAFile->setText(file);
    emit fileSelected(file);
}

void MyWindow::loadFile(const QString & filename)
{
    QFile file(filename);
    if(file.open(file.Text | file.ReadOnly))
    {
        QString text = file.readAll();
        m_myText->setText(text);
    }
    else
        m_myText->setText("Error Opening File");

    m_myText->setVisible(true);
}

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[Stanfillirenfro]

Incredible!!!!!!
Reddy, you a really an engel!!!

Many thanks!! It works PERFECTLY!!!

Many thanks one more time Reddy!