Drop on table and widget

Hi! I have Widget MainWindow and tableWidget in MainWindow. tableWidget is placed in the center of MainWindow. I need drop audio-files on Main Window. If i drop files to MainWindow then do such function, if i drop files on table - do another function. Can you help me?

i try to realize drop on mainWindow:
in header:

Code:

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void dragEnterEvent (QDragEnterEvent *pe){
        if (pe->mimeData()->hasFormat("text/uri-list")){
        pe->acceptProposedAction();
        }
    }
    void dropEvent (QDropEvent* pe);

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in constructor

Code:

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setAcceptDrops(true);

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and

Code:

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void MainWindow::dropEvent(QDropEvent *pe){
        QList<QUrl> urlList=pe->mimeData()->urls();
        QStringList str;
        foreach (QUrl url, urlList ){
        str<<url.toString();
        QMessageBox::information(this,"yeah",url.toString());
        }
  //   Some function with str
    }

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But i have crash on drop.

Comment out lines until the crash goes away. That way you know where things are going wrong...

My drop event (to add single files) looks as follows:

Code:

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void dropEvent(QDropEvent* event) {
	QString filePath;
	if (event->mimeData()->hasFormat( "text/uri-list" )) {
		QList<QUrl> urls = event->mimeData()->urls();
		if (urls.isEmpty()) {
			return;
		}
		if(urls.size()>1) {
			return;
		}
		filePath = urls.first().toLocalFile();
		if(filePath.isEmpty()) {
			return;
		}
	}
        // do something with filePath
}

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you could use the model/view framework built in to qt to accept the dropped data into a model. you would have to subclass QStandardItemModel and override the drag/drop functions, then you just need to tell the view to use that model. here is some code modified from the Bangarang project...

Code:

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bool MusicItemModel::dropMimeData(const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent)
{
    if (action == Qt::IgnoreAction)
        return true;
 
    if (!data->hasFormat("text/uri-list"))
        return false;
 
    if (column > 0)
        return false;
 
    int beginRow;
 
    if (row != -1) {
        beginRow = row;
    } else if (parent.isValid()) {
        beginRow = parent.row();
    } else {
        beginRow = rowCount(QModelIndex());
    }
 
    QList<QUrl> urls = data->urls();
 
    bool internalMove = false;
    QStringList rowsToMove;
    if (data->text().startsWith("Row:")) {
        rowsToMove = data->text().split(",", QString::SkipEmptyParts);
        internalMove = true;
    }
 
    QList<MusicItem> itemsInserted;
    int insertionRow = beginRow;
    for (int i = 0; i < urls.count(); i++) {
        if (internalMove) {
            QString rowEntry = rowsToMove.at(i);
            int rowToMove = rowEntry.remove("Row:").toInt();
            MusicItem item = itemAt(rowToMove);
            itemsInserted << item;
            QList<QStandardItem *> rowItems = getRowData(item);
            insertRow(insertionRow, rowItems);
            insertionRow = insertionRow + 1;
        } else {
            QString url = urls.at(i).toString();
            if (QFile::exists(url)) {
                MusicItem item = Convenience::itemFromUrl(url);
                itemsInserted << item;
                QList<QStandardItem *> rowItems = getRowData(item);
                insertRow(insertionRow, rowItems);
                insertionRow = insertionRow + 1;
            }
        }
    }
 
    insertionRow = beginRow;
    foreach (MusicItem item, itemsInserted) {
        int i = rowFromItemUrl(item.Url);
        m_musiclist.insert(insertionRow, item);
        m_urllist.insert(insertionRow, item.Url);
        if (i != -1){
            m_musiclist.removeAt(i);
            m_urllist.removeAt(i);
        }
        insertionRow = insertionRow + 1;
 
    }
    return true;
}
 
Qt::ItemFlags MusicItemModel::flags(const QModelIndex &index) const
{
    Qt::ItemFlags defaultFlags = Qt::ItemIsSelectable | Qt::ItemIsEnabled;
 
    if (index.isValid()) {
        return Qt::ItemIsDragEnabled | Qt::ItemIsDropEnabled | defaultFlags;
    } else {
        return Qt::ItemIsDropEnabled | defaultFlags;
    }
}
 
QMimeData* MusicItemModel::mimeData(const QModelIndexList &indexes) const
{
    QMimeData *mimeData = new QMimeData();
        QList<QUrl> urls;
        QString indexList;
        foreach (QModelIndex index, indexes) {
            if (index.isValid() && index.column() != 1) {
                QUrl url = QUrl(data(index, MusicItem::UrlRole).toString());
                urls << url;
                indexList += QString("Row:%1,").arg(index.row());
            }
        }
 
        mimeData->setUrls(urls);
        mimeData->setText(indexList);
        return mimeData;
}
 
QStringList MusicItemModel::mimeTypes() const
{
    QStringList types;
    types << "text/uri-list" << "text/plain";
    return types;
}
 
Qt::DropActions MusicItemModel::supportedDropActions() const
{
    return Qt::MoveAction;
}

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hope it helps