Customizing the checkboxes of the items of a QTreeView

[Feoggou]

I have found that the answer is this:

ui.myTreeView->setStyleSheet(
    "QTreeView::indicator:unchecked {image: url(:/icons/eye_grey.png);}"
    "QTreeView::indicator:checked {image: url(:/icons/eye.png);}"
  );

ui.myTreeView->setStyleSheet(
    "QTreeView::indicator:unchecked {image: url(:/icons/eye_grey.png);}"
    "QTreeView::indicator:checked {image: url(:/icons/eye.png);}"
  );

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