Restrict drag and drop to current widget

[QuentinV]

Hello,

In my application there is a QPlainTextEdit and custom widgets that accept drops. My problem is that when I drag a part of the text to one of these widgets, the original text is deleted in QPlainTextEdit, while my goal is to leave the text unchanged.

I tried to change that by overriding dragEnterEvent to set a CopyAction as the default drop action (instead of a MoveAction) :

void ScriptTextEdit::dragEnterEvent(QDragEnterEvent *event){
    QPlainTextEdit::dragEnterEvent(event);
    event->setDropAction(Qt::CopyAction);
    return;
}

However, just by watching what happens in the other widget :

void otherWidget::dragEnterEvent(QDragEnterEvent *event)
{
    qDebug() << event->dropAction();
}

I can see that the dropAction is once again a MoveAction, so it doesn't work.

Hence my questions :

• Is it possible to prevent the drag and drop from "leaving" a widget without re-implementing the dropEvent method from every widget in the app ?
• If so, how can I achieve this ?