accessing data from handles structure from a call back fuction

Question

Aswathy K V 2015-3-7

0
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https://ww2.mathworks.cn/matlabcentral/answers/181946-accessing-data-from-handles-structure-from-a-call-back-fuction

回答： Adam 2015-3-7

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I am new in matlab GUI. The code I have written is as follows:

function pushbutton1_Callback(hObject, eventdata, handles)

% hObject handle to pushbutton1 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

%# JDBC connector path

    %javaaddpath('C:\DB\mysql-connector-java-5.1.17-bin.jar')
    %# connection parameteres
    host = 'localhost'; %MySQL hostname
    user = 'root'; %MySQL username
    password = '';%MySQL password
    dbName = 'signature'; %MySQL database name
    %# JDBC parameters
    jdbcString = sprintf('jdbc:mysql://%s/%s', host, dbName);
    jdbcDriver = 'com.mysql.jdbc.Driver';
 conn = database(dbName, user , password, jdbcDriver, jdbcString); 
 if isconnection(conn)
    list=get(handles.popupmenu1,'String');
val=get(handles.popupmenu1,'Value');
m=list{val};
    qry2 = sprintf('SELECT sign FROM signature where name="%s"',m);
    display(qry2);
    rs2=fetch(exec(conn, qry2));
     alldata2=get(rs2,'Data');
    display(alldata2);
    qry1 = sprintf('SELECT sign FROM sig_master where name="%s"',m);
    display(qry1);
    rs1=fetch(exec(conn, qry1));
     alldata1=get(rs1,'Data');
    display(alldata1);
   % delete(handles.figure1)
 end
 handles.in = alldata2;
 handles.master = alldata1;

I want to take data from handles.in and handles.master and assign them to two variables. This process is to be done when push button2 is pressed. Could you pls help me to do this.

function pushbutton2_Callback(hObject, eventdata, handles)