A question on Matlab functions

Hello everybody,

I had written a code for a input dialog box in matalb & the code is as follows.The following is my main function:-

hsurf_queue = uicontrol(...,
                       'Style','pushbutton',...
                       'Position',[10,350,110,30],...
                       'String','Open 3D raw file',...
                       'TooltipString','BusyAction = queue',...
                       'BusyAction','queue',...
                       'Callback',@surf_queue);

Now surf_queue is a function which is defined as:-

function [t]= surf_queue(hObject,eventdata)
            t=1;          
end

My question is that I want to return and print the value of t in main fucntion, how shall I do it ? My problem is if i add a line like:- t=surf_queue() , 2 times the function surf_queue is being called, i.e one in this line & the other one in uicontrol. Is there any one function whcich could be called to initilize a dialog window as well as print the return value of the function so that I could use the value of t in some other functions.

Thanks in advance for any help.

Answer 1

[Walter Roberson]

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

Note that callbacks of this style cannot return any values; they can only set values in places that other routines know to look for them.