QTableWidget - get column/row from under mouse ?

Dariusz

Hey

I'd like to print current row/column from under mouse position (in mouse move event) as well as item. I know I can get itemAt(event->pos()) for item, but if there is no item there I get null, how can I check what column/row that cursor is in now?

TIA

SGaist

Hi,

Can you show the current code you are using ?

Dariusz

Actually I found out that I need cellEntered signal, but that does not happen as I'm dragging data in to the view, I just want to know whats under my mouse and if I need to make new cell/new data widget in cell or drop in to existing data widget in cell.

Not much code yet... except for basic QDropEvent()/dragEnterEvent/dragMoveEvent events...

SGaist

The events you get as parameter gives you the position of the cursor. So you can check what's under it more precisely.

mrjj

Hi
You can use
https://doc.qt.io/qt-5/qtablewidget.html#itemAt-1
to get item under the cursor.
You can then ask Item for Col/row if u need that.

Dariusz

@mrjj said in QTableWidget - get column/row from under mouse ?:

Hi
You can use
https://doc.qt.io/qt-5/qtablewidget.html#itemAt-1
to get item under the cursor.
You can then ask Item for Col/row if u need that.

This return null if there is no item in column.

@SGaist said in QTableWidget - get column/row from under mouse ?:

The events you get as parameter gives you the position of the cursor. So you can check what's under it more precisely.

I get no event when I'm dragging in a data from other widget/view/source.

SGaist

Can you show your current implementation ?

Dariusz

filterDropIndator() is where I try to figure out the position of the mouse...


void TableWidget::dragEnterEvent(QDragEnterEvent *event) {
    if (event->source() == this) {
        qDebug() << "Internal";
        setDragDropMode(QAbstractItemView::InternalMove);
    } else {
        qDebug() << "External";
        setDragDropMode(QAbstractItemView::DropOnly);
    }
    if (event->mimeData()->hasFormat("templateItemDrag")) {
        qDebug() << "111" << event << "\n3213213" << event->proposedAction() << event->possibleActions() << event->dropAction();
        event->acceptProposedAction();
    }
    //QAbstractItemView::dragEnterEvent(event);
}
void TableWidget::dragMoveEvent(QDragMoveEvent *event) {
    event->accept();
    filterDropIndator(event);
    //QAbstractItemView::dragMoveEvent(event);
}
void TableWidget::dragLeaveEvent(QDragLeaveEvent *event) {
    QAbstractItemView::dragLeaveEvent(event);
}
void TableWidget::dropEvent(QDropEvent *event) {
    qDebug() << "yay ?v3whyg345hg3w";
    if (event->mimeData()->hasFormat("templateItemDrag")) {
        qDebug() << "2132145215215";
        event->acceptProposedAction();
        return;
    }
    QTableWidget::dropEvent(event);
}
TableWidget::TableWidget(QWidget *parentPtr) : QTableWidget(parentPtr) {
    setAcceptDrops(true);
    setDragEnabled(true);
    //viewport()->setAcceptDrops(true);
    //setDragDropOverwriteMode(false);
    setDropIndatorShown(true);
    setDefaultDropAction(Qt::MoveAction);
    setColumnCount(10);
    setRowCount(1);
    connect(this, &QTableWidget::cellEntered, this, &TableWidget::newMousePos);
}
TableWidget::~TableWidget() {

}
void TableWidget::filterDropIndator(QDragMoveEvent *event) {
    auto *w = itemAt(event->pos());
    if (w) {

    } else {
        qDebug() << "Row pos/col = " << mRow << mColumn;
    }
    qDebug() << "filtering indator :" << w;

}
void TableWidget::newMousePos(int row, int column) {
    mRow = row;
    mColumn = column;
}

Dariusz

Ok solved, Im gigantic NUB. I used itemAt instead of indexAt and took me a while to notice it... everything works! thanks!!!