error with set handles.edit1 and function (varargin)

i'm making a GUI, i want to get the current point of axes1 and pass it to a textbox edit1, but i get the followin error:

 ??? Undefined variable "handles" or class "handles.edit1".

 Error in ==> GUI>draggingFcn at 166
 set(handles.edit1,'String','helo')

 ??? Error while evaluating figure WindowButtonMotionFcn

here is my part of my code:

 function draggingFcn(varargin) 
 pt=get(gca,'CurrentPoint'); 
 A=num2str(pt(1,1));
 set(handles.edit1,'String',A)

Answer 1

[Walter Roberson]

How did your draggingFcn get to be varargin, I wonder? Did you create that signature yourself, or did you have GUIDE create it for you?

Anyhow, without getting in to the question of whether handles is even being passed to your function, the fix you need is

function draggingFcn(varargin) 
handles = guidata(ancestor(varargin{1},'figure'));
pt=get(gca,'CurrentPoint'); 
A=num2str(pt(1,1));
set(handles.edit1,'String',A)

[Diego]

IT WORKS perfectly. tank you so much.