docstr: Display the selection box around this item if it is selected and movable
docstr_tok: ["Display","the","selection","box","around","this","item","if","it","is","selected","and","movable"]
code: def showSelectBox(self):
      """Display the selection box around this item if it is selected and movable"""
      if (
          self.selectedAlone and self.isMovable() and self.isVisible()
      ):  # and len(self.canvas.itemList.selectedItems())==1:
          self.selectBox.show()
      else:
          self.selectBox.hide()
  
imports: import importlib
  from ..None import ItemGroup, SRTTransform, debug
  from ..None import functions
  from ..graphicsItems.ROI import ROI
  from ..Qt import QT_LIB, QtCore, QtWidgets
  from .None import TransformGuiTemplate_generic
label_desc: Use image node_id 39 for calling the CanvasItem obj's underlying member method code with example usage: obj.showSelectBox() without return types