Is there any way to create a graphics object

I want to create a graphics object which acts as a parent of child object with some functionalities.

The best example for this is Matlab's 'Contour' object.

I have looked up ChartContainer and Group,

but they are not what I wanted because:

ChartContainer is not a child of an axes, but it acts like an axes. This limits other functionalities that we expect from axes, for example, hold.

Group is not allowed to have subclass,

I want to have a class that its object satisfies:

• it is a graphics object so that it is visible in get(ax, 'Children').
• I can show multiple graphics object together in one axes
• I can modify its data so that its children (such as patch, line, etc) changes interactively.

Is there any way?

[per isakson]

See Widgets Toolbox - MATLAB App Building Components and Widgets Toolbox - Compatibility Support