Switching two mainwindows - c++

Question

I am new to QT GUI programming.
I am trying to test switching two mainwindows continously by using show and hide.
I have created a simple code in main.cpp
main(){
QApplication a(argc , argv)
Mainwinodw1 *window1 = new Mainwindow1();
Mainwinodw1 *window2 = new Mainwindow2();
for (;;)
{
window1->show();
delay();
window1->hide();
window2->show();
delay();
window2->hide();
}
return a.exec();
}
The test can display the windows only one time , but duirng the second iteration they dont show and hide.
Can somebody help to fix this.

Answer 1

Try to use Qt timers instead of hardcoded delay function.
main.cpp file:
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
Mainwindow1 *window1 = new Mainwindow1();
Mainwindow2 *window2 = new Mainwindow2();
WindowSwitcher ws(window1, window2, 2000);
window1->show();
return a.exec();
}
WindowSwitcher source code:
#include "windowswitcher.h"
#include <QTimer>
WindowSwitcher::WindowSwitcher(QMainWindow *w1, QMainWindow *w2, int delay) : QObject(), window1(w1), window2(w2)
{
QTimer *timer = new QTimer(this);
connect(timer, SIGNAL(timeout()), this, SLOT(switchWindow()));
timer->start(delay);
}
void WindowSwitcher::switchWindow()
{
if (window1->isVisible())
{
window1->hide();
window2->show();
}
else
{
window1->show();
window2->hide();
}
}
WindowSwitcher header file:
#include <QObject>
#include <QMainWindow>
class WindowSwitcher : public QObject
{
Q_OBJECT
public:
explicit WindowSwitcher(QMainWindow *w1, QMainWindow *w2, int delay);
private:
QMainWindow *window1;
QMainWindow *window2;
public slots:
void switchWindow();
};