How to transfer data entered in a QWizard to other classes?

[BillGates]

Thanks for reply wysota !

Im sorry to ask, but is there any example somewhere ? I am a noob.
I searched on the net and even here but all I could find were widgets with properties that were int or string.

As I understand it it must be something like :

registerField("name", myWidget, "myProperty", SIGNAL(selectionChanged()));

so i conclude that i must declare my own widget and my own propery. Is this correct ?
My purpose is to make variables like a QList accessible to any/all wizardPage subclass.

[wysota]

A QList of what? That's a template class, you know... And while you are at it, what is the reason for doing that? You can always expose the list using your wizard class's public interface.

[BillGates]

yes, i know its a template, pardon me, a QList<QString> . I didnt think it mattered much.
I dont understand what you mean by "your wizard class public interface" ? Maybe I am missing something?

[wysota]

yes, i know its a template, pardon me, a QList<QString> . I didnt think it mattered much.

Well, it does, because QStringList is already registered to be used with QVariant.

I dont understand what you mean by "your wizard class public interface" ? Maybe I am missing something?

I mean two methods in your wizard class's "public" section - one for setting the value and the other for getting it. Look at the code Lykurg has written, "table()" is the getter method and "setTable(QTableWidget*)" would be a setter method.

Still you didn't answer what you want to do with this all so maybe there are tons of better way to do what you want.

[BillGates]

I want for the QTableWidget *tableDisplay from the first QWizardPAGE to be accesible to the second, the third and so on Pages. So that i can use them for default values, exacty what the field() does.
The only problem is that I am not competent enough; I dont know how to pass my own variables through registerField().
If I have a QStringList created in Page1, i would like to access it in Page2 and Page3..


in void myPage2::initializePage() {

myObject list = field("some_field_registered_from_page1") <-- something like this...

}

[wysota]

I want for the QTableWidget *tableDisplay from the first QWizardPAGE to be accesible to the second, the third and so on Pages. So that i can use them for default values, exacty what the field() does.

It's not what the field() does. To me it seams you need a model in your wizard. Then you can set this model to a QTableView (or QListView) in the first wizard page and also access the model from other pages. field() should represent a single value, not all possible values.

[BillGates]

Umh... so how would i access the model from the QWizard class from inside the Pages ? Pass it to their constructor ?

[wysota]

You can do it any way you see fit. C++ allows for many solutions to this problem. For instance each page has a pointer to the wizard object it is part of.

[BillGates]

"For instance each page has a pointer to the wizard object it is part of. "

you mean wizard() ?

class myWizard : public QWizard
 {
     Q_OBJECT
 
 public:
          whatever*     m_member;
}
 
 
in the myWizard constructor i do :
addPage( new myPage1(           )       );
 
 
 
 
 
myPage1::mypage1(QWidget *parent) : QWizardPage(parent) {
 
wizard()->m_member ? (is this supposed to work?) (apparently it doesnt) (thats basically what i want :D )
 
}

class myWizard : public QWizard
 {
     Q_OBJECT

 public:
          whatever*     m_member;
}


in the myWizard constructor i do :
addPage( new myPage1(           )       );





myPage1::mypage1(QWidget *parent) : QWizardPage(parent) {

wizard()->m_member ? (is this supposed to work?) (apparently it doesnt) (thats basically what i want :D )

}

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Can I reimplement ::next ? http://doc.trolltech.com/4.5/qwizard.html#next [slot] (doesnt say virtual, but I'm no c++ expert)

I do realise your time is more precious than mine, so I *am* thankful.

[wysota]

"For instance each page has a pointer to the wizard object it is part of. "

you mean wizard() ?

Yes, you can cast it to a proper type and use your methods.

MyWizard *wiz = qobject_cast<MyWizard*>(wizard()); // or static_cast if MyWizard doesn't have Q_OBJECT macro
wiz->something();

MyWizard *wiz = qobject_cast<MyWizard*>(wizard()); // or static_cast if MyWizard doesn't have Q_OBJECT macro
wiz->something();

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Can I reimplement ::next ? http://doc.trolltech.com/4.5/qwizard.html#next [slot] (doesnt say virtual, but I'm no c++ expert)

Reimplement nextId().

[BillGates]

Thanks so much for the code snippet, I didnt find this anywhere, in no example! Perhaps they considered normal people would know this..(qobject_cast). I had no clue that that must be done :< Thank you

About ::next(), I understand you are saying to Not reimplement ::next, but reimplement ::nextId() instead. I want to do some stuff when the user clicks "next" so ::next() seems more intuitive.. Basically, you are saying to "do some stuff" not in ::next but in ::nextId() ?

i was thinking
 
void myWizard::next()  {
 
  ..do some stuff...
 
  QWizard::next();
}
is this wrong in any way ?

i was thinking

void myWizard::next()  {

  ..do some stuff...

  QWizard::next();
}
is this wrong in any way ?

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PS: apparently if I do in myWizard constructor :
setButton(QWizard::NextButton, mybuton);
connect ( mybuton, SIGNAL(clicked()), this, SLOT(my_slot()));

my_slot() is executed AFTER the next Page's initializePage() ?!?! (is this logical?)

[wysota]

Thanks so much for the code snippet, I didnt find this anywhere, in no example! Perhaps they considered normal people would know this..(qobject_cast). I had no clue that that must be done :< Thank you

It's there in many places, I assure you.

About ::next(), I understand you are saying to Not reimplement ::next, but reimplement ::nextId() instead. I want to do some stuff when the user clicks "next" so ::next() seems more intuitive..

No, in that case you need to reimplement QWizardPage::initializePage() on the next page you want to show.

PS: apparently if I do in myWizard constructor :
setButton(QWizard::NextButton, mybuton);
connect ( mybuton, SIGNAL(clicked()), this, SLOT(my_slot()));

my_slot() is executed AFTER the next Page's initializePage() ?!?! (is this logical?)

Yes, it's logical.


Read this article, it might help you understand how wizards work:
http://doc.trolltech.com/qq/qq22-qwizard.html