the line QRadioButton::indicator "indicator" does not name a type

Also where can the png files be found?

Here is the example

Qt Code: 
  1. QRadioButton::indicator
  2. {
  3.     width: 13px;
  4.     height: 13px;
  5. }
  6.  
  7. QRadioButton::indicator::unchecked
  8. {
  9.    image: url(:/images/radiobutton_unchecked.png);
  10. }
  11.  
  12. QRadioButton::indicator:unchecked:hover
  13. {
  14.     image: url(:/images/radiobutton_unchecked_hover.png);
  15. }
  16.  
  17. QRadioButton::indicator:unchecked:pressed
  18. {
  19.     image: url(:/images/radiobutton_unchecked_pressed.png);
  20. }
  21.  
  22. QRadioButton::indicator::checked
  23. {
  24.     image: url(:/images/radiobutton_checked.png);
  25. }
  26.  
  27. QRadioButton::indicator:checked:hover
  28. {
  29.     image: url(:/images/radiobutton_checked_hover.png);
  30. }
  31.  
  32. QRadioButton::indicator:checked:pressed
  33. {
  34.     image: url(:/images/radiobutton_checked_pressed.png);
  35. }
To copy to clipboard, switch view to plain text mode