Switching between two ui forms / QMainWindow screens

[d_stranz]

I think we need to start from zero, because something is clearly wrong with what you are doing now.

Please write and run these two programs. You can simply comment out the lines in your current main.cpp and replace them with these lines:

#include <QtWidgets/QApplication>
#include "RaptorCoreGUI.h"
 
int main(int argc, char *argv[])
{
	QApplication a(argc, argv);
 
	RaptorCoreGUI w;
	w.show();
	return a.exec();
}

#include <QtWidgets/QApplication>
#include "RaptorCoreGUI.h"

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

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

To copy to clipboard, switch view to plain text mode 

#include <QtWidgets/QApplication>
#include "RaptorLrsGUI.h"
 
int main(int argc, char *argv[])
{
	QApplication a(argc, argv);
 
	RaptorLrsGUI w;
	w.show();
	return a.exec();
}

#include <QtWidgets/QApplication>
#include "RaptorLrsGUI.h"

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

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

To copy to clipboard, switch view to plain text mode 

In each case, do you see the windows you expect to see?

[nitks.abhinav]

Yes I can see the windows (attached)

IMG-4835 --> coreGUI
ING-4836 --> lrsGUI

[d_stranz]

OK, good. The problem is not with your Raptor* widgets.

Next step. Do you see the RaptorLrsGUI window when you run this code?

#include <QtWidgets/QApplication>
#include <QtWidgets/QMainWindow>
#include <QtWidgets/QStackedWidget>
#include "RaptorLrsGUI.h"
 
int main(int argc, char *argv[])
{
	QApplication a(argc, argv);
 
	QMainWindow w;
        QStackedWidget * pStack = new QStackedWidget( &w );
        RaptorLrsGUI * pLrs = new RaptorLrsGUI;
        pStack->addWidget( pLrs );
        w.setCentralWidget( pStack );
	w.show();
	return a.exec();
}

#include <QtWidgets/QApplication>
#include <QtWidgets/QMainWindow>
#include <QtWidgets/QStackedWidget>
#include "RaptorLrsGUI.h"

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

	QMainWindow w;
        QStackedWidget * pStack = new QStackedWidget( &w );
        RaptorLrsGUI * pLrs = new RaptorLrsGUI;
        pStack->addWidget( pLrs );
        w.setCentralWidget( pStack );
	w.show();
	return a.exec();
}

To copy to clipboard, switch view to plain text mode 

If it does, substitute "w.showMaximized()" for "w.show()". Does it still work?