Limit Drag And Drop Vertically
Currently, I have created multiple widgets stacked on top of one another. I am looking to allow a user to drag and drop the upper most widgets (I have read the drag and drop docs here: http://doc.qt.digia.com/qt/dnd.html and I think I can do it). I basically made my own QSlider (vertical), but instead of only having one item to slide up and down along the plane, there are 3.
The one issue is, I would like to limit the dragging only only vertically (i want to make the horizontal x value static and unchangeable when dragging). Just like a QSlider works, and all 3 items will stay on the plane of the background slider line.
Does anyone know how I can do this using the mouseevent override during the drag and drop operation?