Vertical Layout: something wrong

[sitesv]

Hello!
I have one simple Q:
Default Widget project

#include "mainwindow.h"

#include <QApplication>
#include <QVBoxLayout>
#include <QTableWidget>

void init_form(QWidget *parent);
QVBoxLayout *vbox;

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;

    init_form(&w);

    w.show();
    return a.exec();
}

void init_form(QWidget *parent){
    vbox = new QVBoxLayout(parent);
    for(int i = 0; i < 2; i++){
        QTableWidget *t = new QTableWidget(parent);
        t->setRowCount(10);
        t->setColumnCount(10);
        vbox->addWidget(t);
    }
    parent->setLayout(vbox);
}

What is wrong?
Thank you!

[SGaist]

Hi,

What does MainWindow contain ?

As for the what is wrong question: why do you store a static pointer to your layout ?
One thing that is wrong is passaient a parent to your layout constructor and call setLayout afterward. If you give a parent to a layout, then it will be automatically applied.

[sitesv]

@SGaist said in Vertical Layout: something wrong:

What does MainWindow contain ?

Default empty form.

@SGaist said in Vertical Layout: something wrong:

As for the what is wrong question: why do you store a static pointer to your layout ?

Ok. What pointer I should use as a parent?

[mrjj]

hi
MainWindow is special in that it normally has a centralWidget so
what i think you want is

#include "mainwindow.h"

#include <QApplication>
#include <QVBoxLayout>
#include <QTableWidget>

void init_form(QWidget *parent);
QVBoxLayout *vbox; // this is really not needed. could just be in function

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;

    init_form(w.centralWidget()); // give the centralWidget

    w.show();
    return a.exec();
}

void init_form(QWidget *parent){
    vbox = new QVBoxLayout(); // no parent yet
    for(int i = 0; i < 2; i++){
        QTableWidget *t = new QTableWidget(parent);
        t->setRowCount(10);
        t->setColumnCount(10);
        vbox->addWidget(t);
    }
    parent->setLayout(vbox);
}