guide callback function

how to use a veriable from one matlab callback function into another

i am defining veriable 'key' in func

'function scramblekey_Callback(hObject, eventdata, handles)'

& want to use it into func

'function embedwatermark_Callback(hObject, eventdata, handles)'

Answer 1

[Walter Roberson]

http://matlab.wikia.com/wiki/FAQ#How_can_I_share_data_between_callback_functions_in_my_GUI.3F

[kush]

i cant get that can u elaborate

[Walter Roberson]

In first function:

handles.key = key;

uidata(gcf, handles);

In second function:

key = handles.key;

[kush]

it gives error as :

??? Undefined function or method 'uidata' for input arguments of type 'struct'.

Error in ==> key_embeding>scramblekey_Callback at 101

uidata(gcf, handles);

Error in ==> gui_mainfcn at 96

feval(varargin{:});

Error in ==> key_embeding at 42

gui_mainfcn(gui_State, varargin{:});

Error in ==>

@(hObject,eventdata)key_embeding('scramblekey_Callback',hObject,eventdata,guidata(hObject))

??? Error while evaluating uicontrol Callback

??? Reference to non-existent field 'key'.

Error in ==> key_embeding>embedwatermark_Callback at 131

key = handles.key;

Error in ==> gui_mainfcn at 96

feval(varargin{:});

Error in ==> key_embeding at 42

gui_mainfcn(gui_State, varargin{:});

Error in ==>

@(hObject,eventdata)key_embeding('embedwatermark_Callback',hObject,eventdata,guidata(hObject))

??? Error while evaluating uicontrol Callback

[Jan]

A typo: "uidata" => "guidata".

[Walter Roberson]

Yes, sorry. guidata() is correct.