How to drag and drop QStandardItems containing file paths in a Treeview to a file on the desktop or another application?

ralphtink

I have a treeview which is modeling a file tree. Each item in the TreeView is a QstandardItem that holds a file path. I would like to be able to get the file it referes to and drag the item into another application. The files are all video files so I would like to add the ability to drag and drop into VLC, Adobe Premier etc.

There are a lot of posts with similar questions but the answers are kind of all over the place so any resources will be of great help.

Thanks!

VRonin

Subclass your QStandardItemModel with something like this:

class FileItemModel : public QStandardItemModel{
    Q_OBJECT
    Q_DISABLE_COPY(FileItemModel)
public:
    using QStandardItemModel::QStandardItemModel;
    QMimeData *mimeData(const QModelIndexList &indexes) const override{
        QMimeData *result  = QStandardItemModel::mimeData(indexes);
        if(result){
            QList<QUrl> urls;
            for (auto&& idx : indexes){
                urls << QUrl::fromLocalFile(idx.data()); /*this assumes the full path to the file is stored in DisplayRole, change according to your needs*/
            }
            result->setUrls(urls);
        }
        return result; 
    }
    QStringList mimeTypes() const override{
        return QStandardItemModel::mimeTypes() << QStringLiteral("text/uri-list");
    }
};