Use these MATLAB® functions to save and restore the state of a COM control object.
Load and initialize a COM control object from a file
Write and serialize a COM control object to a file
Save, or serialize, the current state
of a COM control to a file using the
save function. Serialization is
the process of saving an object onto a storage medium (such as a file
or a memory buffer) or transmitting it across a network connection
link in binary form.
The following example creates an
and saves its original state to the file
f = figure('position',[100 200 200 200]); h = actxcontrol('mwsamp.mwsampctrl.2',[0 0 200 200],f); save(h,'mwsample')
Now, alter the figure by changing its label and the radius of the circle:
h.Label = 'Circle'; h.Radius = 50; Redraw(h);
load function, you can restore
the control to its original state:
To verify the results, type:
ans = Label: 'Label' Radius: 20
MATLAB supports the COM
Use these MATLAB functions to release or delete a COM object or interface.
When you no longer need an interface, use the
to release the interface and reclaim the memory used by it. When you
no longer need a control or server, use the
to delete it. Alternatively, you can use the
to both release all interfaces for the object and delete the server
Note: In versions of MATLAB earlier than 6.5, failure to explicitly release interface handles or delete the control or server often results in a memory leak. This is true even if the variable representing the interface or COM object has been reassigned. In MATLAB version 6.5 and later, the control or server, along with all interfaces to it, is destroyed on reassignment of the variable or when the variable representing a COM object or interface goes out of scope.
When you delete or close a figure window containing a control, MATLAB automatically releases all interfaces for the control. MATLAB also automatically releases all handles for an Automation server when you exit the program.