pass variables between 2 forms

[jacek]

You can use http://doc.trolltech.com/4.1/qsettings.html is easy ....
is same as php session ..... .

You don't use QSettings to pass data between forms. QSettings is for accessing application's configuration and other data that need permanent store.

To pass data between forms you can use signals & slots mechanism or just create a normal methods that pass data:

void Form1::passDataToSecondForm()
{
   // _form2 points to an object that represents the second form.
   _form2->setSomething( _ui.someLineEdit->text() );
}

void Form1::passDataToSecondForm()
{
   // _form2 points to an object that represents the second form.
   _form2->setSomething( _ui.someLineEdit->text() );
}

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[patrik08]

You don't use QSettings to pass data between forms. QSettings is for accessing application's configuration and other data that need permanent store.

Normal i make form 1 ,2 ,3 ecc on a QTabWidget /QToolBox to access all on the same class.... und emit / slots from subclass to invoke parent the read action... and setting i put to a xml file... to make portable .... i not find the place / archives from qt to store data from QSettings .... on mac i not found .xxx hidden file from qsetting ... to delete or remove ....

[jacek]

and setting i put to a xml file... to make portable ....

If you want to make your settings portable between different OSes, you can use .ini files (QSettings::IniFormat) or even register you own format with QSettings::registerFormat(), but this has nothing to do with passing data between objects inside your application.