Hi, as in the subject I started playing with drag and drop. The idea is to have a QListWidget filled with some items then dragging one item on the desktop (i'm using kde) it should create a plasmoid with the item's text. I prepared the plasmoid and added to .desktop the line X-Plasma-DropMimeTypes=text/plain. Next I coded the app: have created a new class subclassing QListWidget and redefined QStringList ListWidget::mimeTypes () to return "plain/text" as mime type.

Now, after compiling it, if i try to drag an item on the desktop correctly popupS a menu asking which plasmoid create (between mine and notes witdget) but, no matter what I choose, I got an empty plasmoid: no text is passed dragging.

Here the code:

header
Qt Code: 
  1. #include <QtGui/QMainWindow>
  2. #include <QtGui/QListWidget>
  3.  
  4. class ListWidget : public QListWidget
  5. {
  6.     Q_OBJECT
  7. public:
  8.     ListWidget(QWidget *parent);
  9.  
  10. protected:
  11.     QStringList mimeTypes () const;
  12. };
  13.  
  14. class PassMime : public QMainWindow
  15. {
  16. Q_OBJECT
  17. public:
  18.     PassMime();
  19.     virtual ~PassMime();
  20.     QStringList i18n(const char* arg1);
  21. };
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implementation
Qt Code: 
  1. #include <QtGui/QLabel>
  2. #include <QtGui/QMenu>
  3. #include <QtGui/QMenuBar>
  4. #include <QtGui/QAction>
  5. #include <QtGui/QListWidget>
  6. #include <QtCore/QMimeData>
  7. #include <QtCore/QDebug>
  8.  
  9. ListWidget::ListWidget(QWidget* parent): QListWidget(parent)
  10. {
  11.  
  12. }
  13.  
  14. QStringList ListWidget::mimeTypes () const
  15. {
  17.     list << "text/plain";
  18.  
  19.     return list;
  20. }
  21.  
  22. PassMime::PassMime()
  23. {
  25.     sl << "apple";
  26.     sl << "orange";
  27.     sl << "lemon";
  28.  
  29.     ListWidget *l = new ListWidget(this);
  30.     l->setDragEnabled(true);
  31.     foreach(QString s, sl) {
  33.         item->setText(s);
  34.         l->addItem(item);
  35.     }
  36.  
  37.     setCentralWidget( l );
  38.     QAction* a = new QAction(this);
  39.     a->setText( "Quit" );
  40.     connect(a, SIGNAL(triggered()), SLOT(close()) );
  41.     menuBar()->addMenu( "File" )->addAction( a );
  42. }
  43.  
  44. PassMime::~PassMime()
  45. {}
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I tried to override QMimeData * QListWidget::mimeData(const QList<QListWidgetItem *> items) with this new one:

Qt Code: 
  1. QMimeData * ListWidget::mimeData(const QList<QListWidgetItem *> items)
  2. {
  3.     QString text;
  4.     foreach(QListWidgetItem *i, items) {
  5.         text += i->text() + "\n";
  6.     }
  7.  
  8.     QMimeData *data = new QMimeData;
  9.     data->setText(text);
  10.  
  11.     return data;
  12. }
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but probably I did it the wrong way since still doesn't work.

What I miss?

Cheers