QListView not accepting external drops

[battersea]

Hi,

I have an application consisting of a simple QLabel:

class MyLabel : public QLabel {
Q_OBJECT
public:
	MyLabel(QWidget * parent = 0, Qt::WindowFlags f = 0) : QLabel(parent,f) {
		setAcceptDrops(true);
		setDropIndicatorShown(true);
	};
 
	virtual ~MyLabel() {};
 
private:
	void dragEnterEvent(QDragEnterEvent* event) {
		std::cout << "MyLabel::dragEnterEvent()::begin" << std::endl;
		event->acceptProposedAction();
		std::cout << "MyLabel::dragEnterEvent()::end" << std::endl;
	}
 
	void dropEvent(QDropEvent* event) {
		std::cout << "MyLabel::dropEvent()::begin" << std::endl;
		std::cout << "MyLabel::dropEvent()::end" << std::endl;
	}
};

class MyLabel : public QLabel {
Q_OBJECT
public:
	MyLabel(QWidget * parent = 0, Qt::WindowFlags f = 0) : QLabel(parent,f) {
		setAcceptDrops(true);
		setDropIndicatorShown(true);
	};
	
	virtual ~MyLabel() {};
	
private:
	void dragEnterEvent(QDragEnterEvent* event) {
		std::cout << "MyLabel::dragEnterEvent()::begin" << std::endl;
		event->acceptProposedAction();
		std::cout << "MyLabel::dragEnterEvent()::end" << std::endl;
	}
	
	void dropEvent(QDropEvent* event) {
		std::cout << "MyLabel::dropEvent()::begin" << std::endl;
		std::cout << "MyLabel::dropEvent()::end" << std::endl;
	}
};

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and a QListView:

class MyListView : public QListView {
Q_OBJECT
public:
	MyListView(QWidget * parent = 0) : QListView(parent) {
		setAcceptDrops(true);
		setDropIndicatorShown(true);
	};
 
	virtual ~MyListView() {};
 
private:
	void dragEnterEvent(QDragEnterEvent* event) {
		std::cout << "MyListView::dragEnterEvent::begin" << std::endl;
		event->acceptProposedAction();
		std::cout << "MyListView::dragEnterEvent::end" << std::endl;
	}
 
	void dropEvent(QDropEvent* event) {
		std::cout << "MyListView::dropEvent::begin" << std::endl;
		std::cout << "MyListView::dropEvent::end" << std::endl;
	}
};

class MyListView : public QListView {
Q_OBJECT
public:
	MyListView(QWidget * parent = 0) : QListView(parent) {
		setAcceptDrops(true);
		setDropIndicatorShown(true);
	};
	
	virtual ~MyListView() {};

private:
	void dragEnterEvent(QDragEnterEvent* event) {
		std::cout << "MyListView::dragEnterEvent::begin" << std::endl;
		event->acceptProposedAction();
		std::cout << "MyListView::dragEnterEvent::end" << std::endl;
	}
	
	void dropEvent(QDropEvent* event) {
		std::cout << "MyListView::dropEvent::begin" << std::endl;
		std::cout << "MyListView::dropEvent::end" << std::endl;
	}
};

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The QLabel widget accepts drops from files outside the Qt application, resulting in the output:

MyLabel::dragEnterEvent::begin
MyLabel::dragEnterEvent::end
MyLabel::dropEvent::begin
MyLabel::dropEvent::end

The QListview widget does not accept drops from files outside the Qt application, resulting in the output:

MyListView::dragEnterEvent::begin
MyListView::dragEnterEvent::end

So even though the proposed action is accepted in MyListView::dragEnterEvent, the MyListView::dropEvent function is never called...

So my question is the following:

What's keeping the QListView from calling the dropEvent?

Eventually, I will want to add the file names of the dropped files into the list, but without the dropEvent ever being called, I don't see how I can do this...

Cheers,
Ben

[battersea]

void dragMoveEvent(QDragMoveEvent* event) {
	event->acceptProposedAction();
}

void dragMoveEvent(QDragMoveEvent* event) {
	event->acceptProposedAction();
}

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seems to fix the issue.

The parent "dragMoveEvent" was ignoring the event. See also this thread: http://www.qtcentre.org/threads/3498...and-QTableView