Drag n' drop does not work

QT-static-prgm

Hi,

i want to enable drag n' drop for my program, but it does not work. I want to accept files (only .msh but it would be fine if it accept everything, too)to drop on my window and i need the filename and path.

First i set my widget to accept drops
and then i overwrite the drop function
But when i move something over my window, i get an icon that dropping is not allowed.

Any ideas?? Do i need the move function, too?? I don't care about where the file is dropped. It can be done everywhere on my window.

mrjj

Hi
Yes, you need the other funcs also
http://doc.qt.io/qt-5/dnd.html
So it knows its ok and will show "ok" symbol.

void Window::dragEnterEvent(QDragEnterEvent *event)
{
if (event->mimeData()->hasFormat("text/plain"))
event->acceptProposedAction();
}

Also notice the text/plain check.
When dropping files from outside , the format will/might be different.
something like

void MainWindow::dragEnterEvent(QDragEnterEvent *e)
{
    if (e->mimeData()->hasUrls()) {
        e->acceptProposedAction();
    }
}

void MainWindow::dropEvent(QDropEvent *e)
{
    foreach (const QUrl &url, e->mimeData()->urls()) {
        QString fileName = url.toLocalFile();
        qDebug() << "Dropped file:" << fileName;
    }
}

source:
http://stackoverflow.com/questions/14895302/qt-drag-drop-add-support-for-dragging-files-to-the-applications-main-window

It can be done everywhere on my window.
No, it only works for the widget that implements the D&D.
So if u drag over another widget it wont work.

QT-static-prgm

works, thanks :D