Drag and drop with OSR

[DanielYampolschi]

Hello, I am trying to implement a drag and drop functionallity on a QCefView client using OSR. (It deoes work out of the box without OSR)
But I have no idea where to start, or what am I supposed to do to make it work.
Could someone please show me, or point, the way to add this functionallity?
I am getting a bit desperate now, since I tried a lot of things already and I am not making any progress.
Thank you very much.

[tishion]

Hi @DanielYampolschi for OSR D&D implementation, you need to consider the two scenarios below:

1. drag data from outside of QCefView and drop it onto QCefView
   in this scenario, you don't need to care about where the data comes from, you need to implement Qt D&D for QCefView, AKA, at least the following 4 methods:

• QCefViwe::QDragEnterEvent
  in your implementation, you need to call CefBrowserHost::DragTargetDragEnter

• QCefViwe::QDragLeaveEvent
  in your implementation, you need to call CefBrowserHost::DragTargetDragLeave

• QCefView::QDragMoveEvent
  in your implementation, you need to call CefBrowserHost::DragTargetDragOver

• QCefView::QDropEvent
  in your implementation, you need to call CefBrowserHost::DragTargetDrop

obviously, you need to convert the QMimeData to CefDragData

2. drag data from QCefView and drop it to the outside of QCefView
   when the user drag data from QCefView the method CefRenderHandler::StartDragging will get called, if you allow this dragging, you need to create a QDrag operation, please refer to this simple example: https://doc.qt.io/qt-6/dnd.html#dragging

good luck

[wangtao0505]

If I want to drag and drop a small image on a web page, how do QMimeData get the image information？