qtquestionplou

*.pro file*
```
QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = TestSimpleTableWidget
TEMPLATE = app
DEFINES += QT_DEPRECATED_WARNINGS

CONFIG += c++11

SOURCES += \
        main.cpp \
        testmainwindow.cpp \
        testtableform.cpp

HEADERS += \
        testmainwindow.h \
        testtableform.h

FORMS +=

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target
```

*mainwindow.h*
```
#ifndef TESTMAINWINDOW_H
#define TESTMAINWINDOW_H

#include <QMainWindow>
#include <QPushButton>
#include <QVBoxLayout>

#include "testtableform.h"

class TestMainWindow : public QMainWindow
{
    Q_OBJECT
public:
    explicit TestMainWindow(QWidget *parent = nullptr);
    ~TestMainWindow();
private:
    TestTableForm * _tableForm;
    QPushButton *   _butOpen;
};

#endif // TESTMAINWINDOW_H
```
*mainwindow.cpp*
```
#include "testmainwindow.h"
#include <QDebug>

TestMainWindow::TestMainWindow(QWidget *parent) : QMainWindow(parent),
    _tableForm(new TestTableForm),
    _butOpen(new QPushButton("Ouvrir test"))
{
    this->setCentralWidget(_butOpen);
    // on click : show tableWidget
    QObject::connect(_butOpen,&QPushButton::clicked,
                     _tableForm, &QWidget::show);
}

TestMainWindow::~TestMainWindow()
{
    delete _tableForm;
    delete _butOpen;
}
```
*tableform.h*
```c++
#ifndef TESTTABLEFORM_H
#define TESTTABLEFORM_H

#include <QWidget>
#include <QTableWidget>
#include <QVBoxLayout>

class TestTableForm : public QWidget
{
    Q_OBJECT
public:
    explicit TestTableForm(QWidget *parent = nullptr);
    ~TestTableForm();
    // workaround...
    void closeEvent(QCloseEvent * event);

private:
    QTableWidget * _table;
    QVBoxLayout * _layout;
};

#endif // TESTTABLEFORM_H
```
*tableform.cpp*
```c++
#include <QDebug>
#include <QCloseEvent>

TestTableForm::TestTableForm(QWidget *parent) : QWidget(parent),
    _table(new QTableWidget),
    _layout(new QVBoxLayout)
{
    QStringList head;
    head.append("A"); head.append("A"); head.append("A");
    head.append("A"); head.append("A"); head.append("A");
    head.append("A"); head.append("A"); head.append("A");
    _table->setHorizontalHeaderLabels(head);
    _table->setColumnCount(head.size());
    _table->setRowCount(20);
    _layout->addWidget(_table);

    this->setLayout(_layout);
}

TestTableForm::~TestTableForm()
{
    delete _table;
}

void TestTableForm::closeEvent(QCloseEvent *event)
{
    qDebug() << "Closing... Not ! But Hiding.";
    event->ignore();
    this->hide();
}
```
*main*
```
#include <QApplication>
#include "testmainwindow.h"

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    TestMainWindow w;
    w.show();
    return a.exec();
}
```