MATLAB: Finding handles to ROI objects such as drawline

Question

Until the advent of drawline, it was easy to find the handle to a line objects created using imline:

fighl = figure;
axhl = axes(fighl);
imagesc(axhl, rand(100));
colormap gray
imline(axhl, [10 50; 80 50])
findobj(axhl, 'type', 'line')
ans = 
  4×1 Line array:
  Line    (end point 2)
  Line    (end point 1)
  Line    (top line)
  Line    (bottom line)

Repeating the same functionality using drawline:

fighl = figure;
axhl = axes(fighl);
imagesc(axhl, rand(100));
colormap gray
drawline(axhl, 'position', [10 50; 80 50])
findobj(axhl, 'type', 'line')
ans = 
  0×0 empty GraphicsPlaceholder array.

I know that this object exists:

>> findobj(axhl)
ans = 
  3×1 graphics array:
  Axes
  Line
  Image

However, any attempt to access the object handle returns an empty placeholder.

I need to be able to find line objects without having to explicitly store their handles.

Is there a way to achieve this?

Answer 1

h = findobj(axhl, 'type', 'images.roi.line');

The object created by drawline is different from regular line objects.

But the best solution is to just store the output handle.

h = drawline(___)