Qsrcollarea doesn't scroll on qlabel

[msalman]

Hi,

I have to display a scrollable label, it contains some help text so it is bigger than the height of the screen, so i use scroll area to display that label. I have been able to scroll the label in C7 device but when i run it on E72 then the scroll bar doesn't scroll.

Following is my code

QWidget* window = new QWidget;
    QVBoxLayout* layout = new QVBoxLayout(window);
    QPushButton* optsButton = new QPushButton("Options");
    QPushButton* exitButton = new QPushButton("Exit");
 
    QLabel *name = new QLabel("some text which makes the vertical scroll enble");
    name->setWordWrap(true);
 
    name->setMaximumWidth(320-35);
    layout->addWidget(name);
    layout->addWidget(optsButton);
    layout->addWidget(name);
    layout->addWidget(exitButton);
    layout->addWidget(name);
 
    QScrollArea* scr = new QScrollArea;
    scr->setWidget(window);
    scr->setWidgetResizable(false);
 
   scr->setBackgroundRole(QPalette::Dark);
    scr->show();

QWidget* window = new QWidget;
    QVBoxLayout* layout = new QVBoxLayout(window);
    QPushButton* optsButton = new QPushButton("Options");
    QPushButton* exitButton = new QPushButton("Exit");

    QLabel *name = new QLabel("some text which makes the vertical scroll enble");
    name->setWordWrap(true);

    name->setMaximumWidth(320-35);
    layout->addWidget(name);
    layout->addWidget(optsButton);
    layout->addWidget(name);
    layout->addWidget(exitButton);
    layout->addWidget(name);

    QScrollArea* scr = new QScrollArea;
    scr->setWidget(window);
    scr->setWidgetResizable(false);

   scr->setBackgroundRole(QPalette::Dark);
    scr->show();

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I will be really thankful if some one give me even any hint regarding that. I am facing this problem in E72, this piece of code works fine on C7 device and show all labels with complete text.