I tried to modify the Fridge Magnets example of a drag-and-drop application by adding scrolling capabilities to it. What I did was create a new layout class, and add the draggable widget to it. Here is the code for this class:

layoutwidget.h

Qt Code: 
  1. class layoutWidget : public QWidget{
  2.     public:
  3.     layoutWidget(QWidget *parent = 0);
  4. };
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layoutwidget.cpp

Qt Code: 
  1. #include "layoutwidget.h"
  2. #include <QVBoxLayout>
  3. #include <QPushButton>
  4. #include <QScrollArea>
  5. #include <QPalette>
  6.  
  7. layoutWidget::layoutWidget(QWidget *parent) : QWidget(parent)
  8. {
  9.     QScrollArea *scroll = new QScrollArea();
  10.  
  11.     QVBoxLayout *box = new QVBoxLayout(this);
  12.     box->setSpacing(1);
  13.  
  14.     QPushButton *pb = new QPushButton("hello world",this);
  15.     box->addWidget(pb);
  16.     DragWidget *window = new DragWidget(this);
  17.  
  18.  
  19.     scroll->setBackgroundRole(QPalette::Light);
  20.     scroll->setWidget(window);
  21.  
  22.     box->addWidget(scroll);
  23.  
  24.     setLayout(box);
  25. }
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The only other thing i modified from the example was the main function:

Qt Code: 
  1. #include <QApplication>
  2. #include <QVBoxLayout>
  3. #include "dragwidget.h"
  4. #include "layoutwidget.h"
  5.  
  6. int main(int argc, char *argv[])
  7. {
  8.     Q_INIT_RESOURCE(fridgemagnets);
  9.  
  10.     QApplication app(argc, argv);
  11.     layoutWidget window;
  12.     window.show();
  13.     return app.exec();
  14. }
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At first, it worked nicely. I've added several words to the words.txt list used by the example program, and it worked as expected, at least vertically. But when i inserted huge words that made very long labels, they didn't get rendered in its entirety, the long labels got cut. What can I do to fix it?