how to abort mget operation?

I'm trying to develop an application that reads folders and files from several FTP sites. I have developed a simple GUI to initiate the starting and stopping of files/folders being downloaded. My problem is that I cannot seem to stop an mget operation once it has started. Is this even possible? Currently, I have the mget operation tied to a pushbutton callback. When the button is pressed, an FTP session is opened, and the mget operation is executed. this works as expected. However, I have another pushbutton on the GUI. The goal is that when this pushbutton is pressed the FTP dowloading will stop. So to execute this this, I have the close(ftpobj) tied to the callback function for this second pushbutton. Unfortunately, when I press this button nothing happens and the FTP downloading continues to execute. Any help on this would be grealy appreciated.

Answer 1

[Walter Roberson]

After you close() the object, try putting in a pause() for a brief period of time. But first have it disp() a message saying that you got there -- it is possible that the callback is not getting serviced until later.

If that does not work, you might need to start a timer that does the close(). This would have to do with the fact that timers can interrupt at every line of a .m but graphic callback events can only interrupt when a pause() or drawnow() is done or a figure() is raised.

It would not surprise me if the real work is being done in Java and so cannot be manipulated by MATLAB directly.