fork download 
  1. // ======================================================================
  2. //  main.cpp
  3. // ======================================================================
  4. //                   This file is a part of the book 
  5. //             "Qt 5.10 Professional programming with C++"
  6. //                       http://q...content-available-to-author-only...k.com
  7. // ======================================================================
  8. //  Copyright (c) 2017 by Max Schlee
  9. // ======================================================================
  10.  
  11. #include <QtWidgets>
  12.  
  13. // ======================================================================
  14. class SimpleDelegate : public QStyledItemDelegate {
  15. public:
  16.     SimpleDelegate(QObject* pobj = 0) : QStyledItemDelegate(pobj) 
  17.     {
  18.     }
  19.  
  20.     void paint(QPainter*                   pPainter,
  21.                const QStyleOptionViewItem& option,
  22.                const QModelIndex&          index
  23.               ) const
  24.     {
  25.         if (option.state & QStyle::State_MouseOver) {
  26.             QRect           rect = option.rect;
  27.             QLinearGradient gradient(0, 0, rect.width(), rect.height());
  28.  
  29.             gradient.setColorAt(0, Qt::white);
  30.             gradient.setColorAt(0.5, Qt::blue);
  31.             gradient.setColorAt(1, Qt::green);
  32.             pPainter->setBrush(gradient);
  33.             pPainter->drawRect(rect);
  34.         }
  35.         QStyledItemDelegate::paint(pPainter, option, index);
  36.     }
  37.  
  38.     QSize sizeHint(const QStyleOptionViewItem& option,
  39.                    const QModelIndex&/*index*/
  40.                   ) const
  41.     {
  42.         return QSize(option.rect.width(), 55);
  43.     }
  44. };
  45.  
  46. // ----------------------------------------------------------------------
  47. int main(int argc, char *argv[])
  48. {
  49.     QApplication app(argc, argv);
  50.     QStringListModel model;
  51.     model.setStringList(QStringList() << "Item1" << "Item2" << "Item3");
  52.  
  53.     QListView listView;
  54.     listView.setModel(&model);
  55.     listView.setItemDelegate(new SimpleDelegate(&listView));
  56.     listView.viewport()->setAttribute(Qt::WA_Hover);
  57.     listView.show();
  58.  
  59.     return app.exec();
  60. }
  61.  
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
prog.cpp:11:21: fatal error: QtWidgets: No such file or directory
 #include <QtWidgets>
                     ^
compilation terminated.
stdout 
Standard output is empty
https://ideone.com/mYUbVa
language:
C++ (gcc 8.3)
created:
4 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!