Replace page of a QTabWidget with a new widget - c++

Question

Basically I have a QTabWidget. At first it has a form widget, widget1. After that form is done being interacted with, the new widget2 form should take over that same tab.
I thought tabWidget->setCurrentWidget(new widget2()); would work, but it's basically an overload for setCurrentIndex(int).
Does anyone know of a way to do this?

Answer 1

You can use a QStackedWidget for this type of thing, in a tab or elsewhere.
Put all the widgets you'll want to display in that tab inside a single QStackedWidget, and place that stacked widget in a tab.
Here's a quick'n'dirty demo:
#include <QtGui>
class W: public QWidget
{
Q_OBJECT
public:
W(QWidget *parent=0): QWidget(parent)
{
// stacked widget displays one of its "children" at a time
QStackedWidget *sw = new QStackedWidget;
QPushButton *b1 = new QPushButton("hello");
sw->addWidget(b1);
QPushButton *b2 = new QPushButton("world");
sw->addWidget(b2);
// tab widget and simplistic layout
QTabWidget *tw = new QTabWidget(this);
tw->addTab(sw, "tab");
QHBoxLayout *l = new QHBoxLayout;
l->addWidget(tw);
setLayout(l);
// signal mapper to demo the widget switching
QSignalMapper *m = new QSignalMapper(this);
connect(b1, SIGNAL(clicked()), m, SLOT(map()));
m->setMapping(b1, 1);
connect(b2, SIGNAL(clicked()), m, SLOT(map()));
m->setMapping(b2, 0);
connect(m, SIGNAL(mapped(int)), sw, SLOT(setCurrentIndex(int)));
}
};