Permanently updating the value of an Edit Text box to input values with a push button

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Earle 2011-6-28

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Hi,

My GUI uses several Edit Text boxes for setting numeric variables that are used within my main code. Because certain parameters may change and shall be specified by the user, I need a way of saving new values into these Edit Text boxes and keeping them permanently i.e. keep the values that the user enters even if I close MATLAB and open it again etc.

So far I have managed to set the String property of my Mass_tb Edit Text handle using the “set” function to set its string to the variable “var”. This happens when a push button with the tag “SetDynDef_pb” is pressed:

function SetDynDef_pb_Callback(hObject, eventdata, handles) get(handles.AvT_cb,'value'); var = get(handles.Mass_tb,'string'); set(handles.Mass_tb,'String',var);

This does update the value of the string to the correct value when I run the code once, but when I close the GUI and run the program again, the value changes back to what I initially set in the Property Inspector from GUIDE (when I built the GUI). I need it to keep the value specified with var from previous runs when the user presses the push button.

Is this doable? I’m sure there’s a way but I only just started with matlab GUIs a few days ago so I’m a bit stuck.

I would very much appreciate any help you could give me!

Thanks

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Answer 1

Walter Roberson 2011-6-28

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You would have to re-save the .fig file /OR/ you would have to write a routine that saved the values in to a file and and another routine to load saved parameters and set() the handles appropriately.

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Earle 2011-6-29

It seems to be that the easiest way would be to save the .fig file, is that right? How do I do this, and would this recall the last state of all the widgets?

Thanks for your help!

Walter Roberson 2011-6-29

I find that I do not like the idea of re-saving the .fig file. Possibly that is partly because _I_ would not use a .fig file in the first place: I prefer to place all of the elements programmatically, which allows me to adapt to user font size preferences and to the user's screen size.

I have not looked at Doug's video to see what he recommends.

I save the key state variables as a structure in a .mat file. User preferences, though, I use uigetpref() and uisetpref() for, which MATLAB saves to a file by itself.

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