[Solved] Scroll Area

alfah

can i put a layout into a scroll area. cuz when i did tht i could get any scroll bars. I have a series of labels put into layouts. I have tried to put the layout into the scrollarea.

It doesn work. Any other alternative?? Shouldi put the labels directly on to the scroll area

Thanks

alfah

andre

Yes, but you need to put the layout on QScrollArea::widget(), not on the QScrollArea itself.

alfah

andre

@
QScrollArea *scrollarea = new QScrollArea();

controlLayout=new QVBoxLayout;
controlLayoutSec=new QVBoxLayout;
controlLayout->addWidget(lblBlnk);
controlLayoutSec->addWidget(lblBlnk);



hLayout3->addLayout(controlLayout);
hLayout3->addSpacing(50);
hLayout3->addLayout(controlLayoutSec);

scrollarea->setWidget(hLayout3);

@

I have done somethin like tht but the scrol bars do not appear

andre

hLayout3 is not a widget, but a layout. Instead, do something like this:

@
scrollArea->widget()->setLayout(hLayout3);
@

alfah

andre

the following line jus aborted prograrm
@
scrollarea->widget()->setLayout(hLayout3);
@

is it addwidget???

andre

Perhaps widget() returns 0, and you need to create such a widget first yourself.
Try:
@
QWidget* baseArea = new QWidget(0);
baseArea->setLayout(hLayout3);
scrollArea->setWidget(baseArea);
@

alfah

I have written the following two lines too
@

QHBoxLayout *hLayoutScrollArea = new QHBoxLayout;
hLayoutScrollArea->addWidget(scrollarea);

@

andre

That will put the scroll area itself in a layout, but without something like this, will not do anything:

@
theParentWidgetOfYourScrollArea->setLayout(hLayoutScrollArea);
@

alfah

i got the program runnin but no widgets are displayed!!!!
@
QHBoxLayout *hLayout3 = new QHBoxLayout;
QLabel *lblBlnk =new QLabel();

QScrollArea *scrollarea =  new QScrollArea();


controlLayout=new QVBoxLayout;
controlLayoutSec=new QVBoxLayout;
controlLayout->addWidget(lblBlnk);
controlLayoutSec->addWidget(lblBlnk);



hLayout3->addLayout(controlLayout);
hLayout3->addSpacing(50);
hLayout3->addLayout(controlLayoutSec);

QWidget *baseArea = new QWidget();
baseArea->setLayout(hLayout3);
scrollarea->setWidget(baseArea);


scrollarea->widget()->setLayout(hLayout3);


QHBoxLayout *hLayoutScrollArea = new QHBoxLayout;
hLayoutScrollArea->addWidget(scrollarea);


secondLbl =new QLabel();
secondLbl->setText(" ");

vLayout=new QVBoxLayout;
vLayout->addWidget(lblHeader);
vLayout->addSpacing(50);
vLayout->addLayout(hLayout1);
vLayout->addWidget(lblTitle2);
vLayout->addLayout(hLayout2);
vLayout->addLayout(hLayoutScrollArea);
vLayout->addWidget(secondLbl);

@

alfah

Found tht something is displayed, but its not legible.

I have put the scroll area into another layout. and finally all the layouts are put into one single vLayout.
I have done this so as to display in another class containing tabs, so the final vLayout goes into the another widget and then displayed on tabs

andre

Make sure that the top level layout (there can be only one!) is actually set on the top level widget. Otherwise, your dialog will not properly layout at all.

alfah

the thing is, every other widget in the form, other than the scrollares is displayed. Its the jus the scrollarea which is messed up

alfah

could u tell me how to include an image, i'l show a diagram to explain better what im tryin to do

Eddy

"Forum help":http://developer.qt.nokia.com/wiki/ForumHelp#9bd9c32b79efb1b2d5b039e4d48300a9

alfah

:D i got it right. It was jus that the widgets were not stretched. There is a property called setWidgetResizable(true) which automatically adjusts the size of widgets. :)

solution:
after you create a scroll area jus add the following line
@
scrollarea->setWidgetResizable(true);
@

Au Revoir :D

alfah