scrollAreaWidgetContents not available when scroll area declared in code

[aurora]

I used scrollArea widget before, that time i created it in designer and to add the widgets into it i did as below

ui->scrollAreaWidgetContents->layout()->addWidget(checkbox);
    ui->scrollAreaWidgetContents->layout()->addWidget(ComboOperator);

ui->scrollAreaWidgetContents->layout()->addWidget(checkbox);
    ui->scrollAreaWidgetContents->layout()->addWidget(ComboOperator);

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But now i wanted to create one more scroll area programattically(without designer)
I declared as below...

QScrollArea *sarea=new QScrollArea;
   sarea->layout()->addWidget(checkbox);
sarea->layout()->addWidget(ComboOperator);

QScrollArea *sarea=new QScrollArea;
   sarea->layout()->addWidget(checkbox);
sarea->layout()->addWidget(ComboOperator);

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And when i tried to put inside it, program was crashing.
Here i didnt get option to use scrollAreaWidgetContents, as it was available in designer....
Please tell me what wrong here...

[Lykurg]

Look what sarea->layout() is returning and think form there forward.

[MarekR22]

sarea->widget()->layout()->addWodget(checkbox)

[aurora]

sarea->widget()->layout()->addWodget(checkbox)

Sorry Marek, that's not working...same problem persist even aftr the changes...

[Lykurg]

So have you checked what sarea->layout() or sarea->widget() is returning? What could ne the reason for that... Hmm...

[aurora]

So have you checked what sarea->layout() or sarea->widget() is returning? What could ne the reason for that... Hmm...

Ya Lykurg....i looked at that....
Both returning Null...!!!!!!!!! Now what should i do ? How can i add widget into scroll area?

[Lykurg]

How can i add widget into scroll area?

You are familiar with the documentation? Open QScrollArea and search for lets say "add" and "widget". I bet you will find the function which adds widgets! The Detailed Description is always a good point to start.

[MarekR22]

QScrollArea *sarea=new QScrollArea;
QWidget *contentW = QWidget();
QBoxLayout *layout = new QBoxLayout(Qt::Vertical, contentW);
layout->addWidget(checkbox);
layout->addWidget(ComboOperator);
sarea->setWidget(contentW);

QScrollArea *sarea=new QScrollArea;
QWidget *contentW = QWidget();
QBoxLayout *layout = new QBoxLayout(Qt::Vertical, contentW);
layout->addWidget(checkbox);
layout->addWidget(ComboOperator);
sarea->setWidget(contentW);

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[Lykurg]

MarekR22, don't you think aurora could have figured that out by him-/herself?

And since it is such a trivial problem -> moved to Newbie section.