table->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); table->setSizeAdjustPolicy(QAbstractScrollArea::AdjustToContents); setMinimumWidth(table->sizeHint().width());

@mrjj Thakn you.

@SGaist
I tried very hard. But, still am not satisfied with the implementation. And now am feeling helpless.
If I set set, fixedsize for QLabel, then scroll bars won't appear if I use zoomout/zoomin.
My question is why QLabel won't shrink back after changing size through Qsplitter. I tried all the combinations of sizepolicy and nothing has worked so far

Your scroll area doesn't have a layout. Remove the outermost nested vertical layout (verticalLayout_5) and use Layout in ... context menu to set the layout to your scroll area.

I got it. Thank you for your help.

Hi,

You should put that QGridLayout inside a widget that you set on the QScrollArea. See QScrollArea::setWidget

Thank you.

Hi,

The focus changed when you clicked the button. What you can do is to keep track on the currently focused QLineEdit in a member variable so you can use it at deletion time. Or you could add a remove button besides your QLineEdit and use that to remove them.

found out!
dropEvent() method of DragWidget() class needed to be modfied to
get X and Y of dropped icon and pass those value to self.minimumSize()

if newIcon.y()+32 > self.minimumHeight(): self.setMinimumHeight(newIcon.y()+32) if newIcon.x()+32 > self.minimumWidth(): self.setMinimumWidth(newIcon.x()+32)

Solution here if anyone runs into the same problem: http://stackoverflow.com/questions/30672183/square-custom-qwidgets-inside-qgridlayout-inside-qscrollarea

I have used a scroll area for something similar. I setup mine a little different. I use widgets to contain each child item (not layouts)

// constructor of parent widget scroll_area = new QScrollArea(this); scroll_area->setWidgetResizable(true); parent_widget_layout->addWidget(scroll_area); d_scroll_area_widget = new QWidget(); scroll_area->setWidget(d_scroll_area_widget); d_scroll_area_layout = new QVBoxLayout(d_scroll_area_widget); // see note below for explanation of spacer d_bottom_vertical_spacer = new QSpacerItem(100, 20, QSizePolicy::Minimum, QSizePolicy::Expanding); d_scroll_area_layout->addItem(d_bottom_vertical_spacer);

Too add items

d_scroll_area_layout->removeItem(d_bottom_vertical_spacer); ... d_scroll_area_layout->addWidget(new_widget_item); d_scroll_area_layout->addItem(d_bottom_vertical_spacer);

The bottom spacer is to make sure that if there is only one child widget of the scroll area it is not resized to fill all the available space. The bottom spacer is always moved to the bottom.

Removing items is a bit more tougher. Actually, in my implementation, I don't. I hide the ones I want to remove and re-assign them if they are re-used in the future. In my case it works for what I need it to do but it may not be practical if you have something where you want to insert / delete / move items.

As @SGaist mentioned you can use a QListView/QListWidget. The items do not need to be the same size and they can be resized after the fact if more or less information is displayed which changes the size.

// Constructor d_ReportListView = new TListView; // subclass of QListWidget d_ReportListView->setDragEnabled(true); d_ReportListView->setDragDropMode(QAbstractItemView::InternalMove); d_ReportListView->setSelectionMode(QAbstractItemView::ExtendedSelection); d_ReportListView->setAutoScroll(true); d_ReportListView->setAutoScrollMargin(48); d_ReportListView->setVerticalScrollMode(QAbstractItemView::ScrollPerPixel); d_ReportListView->setUniformItemSizes(false); d_ReportListView->setResizeMode(QListView::Adjust); // important function to enable resizing QListWidgetItems // if a list widget item size is changed update the size hits of that item void TListView::UpdateSizeHints(void) { TListViewItem *LVItem; QSize ItemSize; int LineHeight; LineHeight = TListViewItem::LineHeight(); // fixed line height ItemSize = this->size(); // size of parent ItemSize.setHeight(num_lines * LineHeight); // only adjusting height to fit required lines // LVItem = pointer to current QListWidgetItem that need to be set or changed LVItem->setSizeHint(ItemSize); }

So, finally I used a QGraphicsView and a QGraphicsScene in which I add my QWidget and now I can use the scroll (with the dragMode). I didn't implemented the zoom yet, but it I'm working on.

Thanks a lot for your help