[Solved] Refresh a QScrollArea()

TheRacoon

Hi,

I'm working on a project which needs QScrollArea().

My problem is that I need to refresh my QScrollArea() but my scrolling widget is in a layout. And this layout in a more global layout.

I have a violation memory access, the second time I try to update my QScrollArea().

My guess is that I am doing that refresh wrong ...

I didn't find any answer in previous posts so if you can help me.

My code :

   void InitWindowLayout()
   {
// Layout contenant les indications
group1 = new QVBoxLayout();
group1->addWidget(...);
group1->addWidget(...);
group2 = new QVBoxLayout();
group2->addWidget(hand);
group2->addWidget(....);
group3 = new QVBoxLayout();
group3->addWidget(...);
group3->addWidget(...);

items = new QVBoxLayout();
items->addSpacerItem(verticalSpacer);
items->addLayout(group1);
items->addSpacerItem(verticalSpacer1);
items->addLayout(group2);
items->addSpacerItem(verticalSpacer1);
items->addLayout(group3);
items->addSpacerItem(verticalSpacer);

group5 = new QHBoxLayout();
group5->addWidget(...);
group5->addWidget(...);

scrollArea = new QScrollArea();
scrollArea->setFixedSize(QSize(640,480));

scrollArea->setStyleSheet("background-color:transparent;");
scrollArea->setFrameShape(QFrame::NoFrame);

group4 = new QVBoxLayout();
group4->addLayout(group5);
group4->setAlignment(group5, Qt::AlignRight);
group4->addWidget(entrainement);
group4->addWidget(createLine(255,255,255), NUMBER_OF_COLUMNS_IN_GRID);
group4->addWidget(scrollArea);
group4->addSpacerItem(verticalSpacer2);


// Layout global avec des marges au-dessus et en-dessous du gridLayout
globalLayout = new QHBoxLayout();
globalLayout->addSpacerItem(horizontalSpacer);
globalLayout->addSpacerItem(verticalSpacer);
globalLayout->addLayout(items);
globalLayout->addSpacerItem(horizontalSpacer);
globalLayout->addLayout(group4);
globalLayout->addSpacerItem(verticalSpacer);
globalLayout->addSpacerItem(horizontalSpacer);

// Incorporation du gridLayout dans la fenetre
setLayout(globalLayout);
  }

    void updateScrollArea(){

// Layout contenant les indications

QWidget * dummy = new QWidget();
dummy->setFixedWidth(620);

QVBoxLayout* data = new QVBoxLayout();

QHBoxLayout*  user = createUserWidget(...);


QVBoxLayout*  user_progression = createRecapProgressionWidget(...);

data->addLayout(user );
data->addSpacerItem(verticalSpacer2);
data->addLayout(user_progression );
data->addSpacerItem(verticalSpacer2);
data->addWidget(createLine(0,0,0), NUMBER_OF_COLUMNS_IN_GRID);
data->addSpacerItem(verticalSpacer2);

dummy->setLayout(data);
scrollArea->setWidget(dummy);

   }

Have a nice day,

Racoon

SGaist

Hi and welcome,

Can you post a backtrace of when your application crashes ?

TheRacoon

Problem solved by understanding how to put some widgets in a scroll area.

Only one widget in a scrollarea and then you can put some other widgets in this widget.

Don't forget to put the widget resizable to true if you want a display.

Thanks for your help,

you can put this thread as solved.

Racoon

SGaist

Great !

You can do that, just update the title prepending [solved] :)