How can I make an object global?

[Archimedes]

Read this global variables.

[Awareness]

Thanks for your answer.I was thinking a Label is not a variable?

[Archimedes]

You should really read the whole C++ tutorial in the site I gave you, not just the part about global variables.

[Awareness]

I have read it,that page doesn't recommend using global variables.But I need to access objects inside functions,how can I do it?

[wysota]

It would be best if you used the Singleton design pattern.

[mengedej]

Create a interface in the class owning the label that lets you modify it in the way you want.
e.g: updateLabel(QString textForLabel)
{
//code to modify Label
}

then let your other class access the label through this function?

[JD2000]

Declare them outside of main() or put them in a header file
but it is best not to use them where they can be avoided.

#include <QtGui/QApplication>
#include "mainwindow.h"
#include "myglobals.h"
 
// globals here
int aInteger;
 
 
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
    w.show();
    return a.exec();
}

#include <QtGui/QApplication>
#include "mainwindow.h"
#include "myglobals.h"

// globals here
int aInteger;


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

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[Awareness]

(Sorry for my late reply)

Thanks for your answers.

JD2000,I tried writing into "globals here section" but it gives an error.It works when I use it in a header file though.