GUI problem while trying to call function from pushbutton1 to pushbutton2.

i want to access data from push button1 to push button2. here is my code

function pushbutton1_Callback(hObject, eventdata, handles)
  [FileName,PathName] = uigetfile('*.avi');
  PathOriginal=sprintf('%s%s',PathName,FileName);
  readobj1=mmreader(PathOriginal);
  readobj = readobj1;
  %set(handles.pushbutton1,'UserData',readobj);

function pushbutton2_Callback(hObject, eventdata, handles)

%readobj=get(handles.pushbutton1,'UserData');
vidframes=read(handles.readobj);
numframes=get(readobj,'numberOfFrames');

when i run this file..i am getting error like this...any one please help me.

error message in command window:

Reference to non-existent field 'readobj'.

Error in ==> trying>pushbutton2_Callback at 96
vidframes=read(handles.readobj);

Error in ==> gui_mainfcn at 96
        feval(varargin{:});

Error in ==> trying at 43
    gui_mainfcn(gui_State, varargin{:});

Error in ==>
@(hObject,eventdata)trying('pushbutton2_Callback',hObject,eventdata,guidata(hObject))

??? Error while evaluating uicontrol Callback

this might looks like easy one. but i am new to gui design. so please help. whats going on here in call back functions. please help me. Thank you.

Answer 1

[Walter Roberson]

At the end of pushbutton1_Callback add the line

guidata(hObject, handles);

[Sandhu]

hi Walter, Tnq very much for your help.

after adding this line guidata(hObject, handles); also i am getting same error. even if i declared readobj as a global variable, then also i am getting same error. please help me.

[Walter Roberson]

Ah, your line

readobj = readobj1;

should be

handles.readobj = readobj1;

[Sandhu]

wowww........Walter it works grate. superb....

Thank you very much for you valuable help.