How to get user input from an edit text field

In Matlab GUI, without using GUIDE tools, I am trying to get user input out of an edit text field and use it in a different function. This user input will be used as parameters for a graph that will be define in the other function. I have tried doing this by using the handle of the edit text field and the error non existant field is returned to me. How do I get around this error, and Is there any way that this can be done?

[Azzi Abdelmalek]

post the part of your code causing error

[Matt Kindig]

I think you want to do something like this:

value = str2double(get(objectHandle, 'String'));

Answer 1

[Evan]

In the function that creates your uicontrols, do you ever save your handles structure after creating the editbox? Example:

function mygui

handles.f = figure; %create figure
handles.edit = uicontrol('style','edit',...
   'callback',{@my_callback}); %create editbox

guidata(handles.f,handles) %save handles structure to figure

function my_callback(h,evt)

That's the just about only thing I can think of that would be causing the field to be missing whenever you pass the handles structure to your callback function and attempt to access the string in the editbox.