class_docstr: Overlay widget that draws drop areas during a drag-drop operation
code: def __init__(self, parent):
      QtWidgets.QWidget.__init__(self, parent)
      self.dropArea = None
      self.hide()
      self.setAttribute(
          QtCore.Qt.WidgetAttribute.WA_TransparentForMouseEvents
      )
  
file_path: pyqtgraph/pyqtgraph/dockarea/DockDrop.py
imports: from ..Qt import QtCore, QtGui, QtWidgets
label_desc: Use image node_id 1 to create a new DropAreaOverlay object from inherited base classes: QtWidgets with example: obj = DropAreaOverlay(parent)