MATLAB: How can i access elements of popup menu and use it in Push Button callbacks

callbacksMATLABpop up menupush button

function popupmenu1_Callback(hObject, eventdata, handles)
contents= cellstr(get(hObject,'String'));
popchoice1 = contents(get(hObject,'Value'));
if (strcmp(popchoice1,'choice 1'))
    pop1val=10;
elseif (strcmp(popchoice1,'choice 2'))
    pop1val=20;
elseif(strcmp(popchoice1,'choice 3'))
    pop1val=30;
end
set(handles.popupmenu1,'UserData',pop1val);
assignin('base','pop1val',pop1val);
function popupmenu2_Callback(hObject, eventdata, handles)
contents= cellstr(get(hObject,'String'));
popchoice2= contents(get(hObject,'Value'));
if (strcmp(popchoice2,'a'))
    pop2val=40;
elseif(strcmp(popchoice2,'b'))
    pop2val=50;
elseif(strcmp(popchoice2,'c'))
    pop2val=60;
end
set(handles.popupmenu2,'UserData',pop2val);
assignin('base','pop2val',pop2val);
function pushbutton1_Callback(hObject, eventdata, handles)
pop1val=get(handles.popupmenu1,'UserData');
pop2val=get(handles.popupmenu2,'UserData');
c=pop1val*pop2val;
set(handles.edit1,'Value',str2double(c));
In the above probelm i need to calculate mutiplication of two numbers based on choices of two popup menu data and need to access that data in push button callback to calculate the mutiplication.

Best Answer

Hello Anurag,
You can use either of the following solutions:
Solution.1: As you are assigning the values to the workspace you can read it by using evalin command.
function pushbutton1_Callback(hObject, eventdata, handles)
pop1val=evalin('base','pop1val');
pop2val=evalin('base','pop2val');
c=pop1val*pop2val;
set(handles.edit1,'string',c); % here you don't have to convert as the value already in double.
Solution.2:
assignin('base','pop1val',pop1val) This statement you don't require in your code. As you already setting the value of 'UserData' for popupmenu (set(handles.popupmenu1,'UserData',pop1val);)
This is how your code looks now:
function popupmenu1_Callback(hObject, eventdata, handles)
contents= cellstr(get(hObject,'String'));
popchoice1 = contents(get(hObject,'Value'));
if (strcmp(popchoice1,'choice 1'))
    pop1val=10;
elseif (strcmp(popchoice1,'choice 2'))
    pop1val=20;
elseif(strcmp(popchoice1,'choice 3'))
    pop1val=30;
end
set(handles.popupmenu1,'UserData',pop1val);
function popupmenu2_Callback(hObject, eventdata, handles)
contents= cellstr(get(hObject,'String'));
popchoice2= contents(get(hObject,'Value'));
if (strcmp(popchoice2,'a'))
    pop2val=40;
elseif(strcmp(popchoice2,'b'))
    pop2val=50;
elseif(strcmp(popchoice2,'c'))
    pop2val=60;
end
set(handles.popupmenu2,'UserData',pop2val);
function pushbutton1_Callback(hObject, eventdata, handles)
pop1val=get(handles.popupmenu1,'UserData');
pop2val=get(handles.popupmenu2,'UserData');
c=pop1val*pop2val;
set(handles.edit1,'string',c);
Accept it if its work for you!!
Thanks
Ankit
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