GUI script/function issue
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Hello everyone,
I am having some problems with the creation of a GUI. I am relatively new to GUI so I am having a problem that I cannot figure out. Here it is. I created a GUI in which you input some parameters and when you press next it stores them and moves to the next window. It all worked fine when I had it in my script, but now I am trying to make my code modular and I want to have the GUI as a separate function. However, when I move it to a function, I get an error because my handle numbers for some reason are not passed to the callback function when the user presses next. I am not sure what the issue is and I don't know how to resolve it.
A little sample code is given here:
function UiData = Heat_Sink_UI
close all;
%Create Figure
h = figure('Name','Geometry Selection','NumberTitle','off');
uicontrol(h,'Style', 'text','String', 'Thermal Inputs' ,'Position', [20 390 520 20],'FontWeight','bold','FontSize',11);
% Inlet temperature in text format.
uicontrol(h,'Style', 'text','String', 'Inlet Temperature [K]: ' ,'Position', [150 340 260 30],'FontWeight','bold','FontSize',11);
h2=uicontrol(h,'Style', 'edit','String', '23' ,'Position', [150 300 260 30],'FontSize',11);
% Heat to be dissipated.
uicontrol(h,'Style', 'text','String', 'Heat Load [W]: ','Position', [150 240 260 30],'FontWeight','bold','FontSize',11);
h3=uicontrol(h,'Style', 'edit','String', '300','Position', [150 200 260 30],'FontSize',11);
% Save values in array Therm and move forward.
hc = uicontrol('Style', 'pushbutton','String', 'Next','Position', [320 20 200 20],'FontSize',11);
set(hc,'Callback','Therm=Store_Move_to_Next([h2 h3],h,1,[1 1]);')
uiwait(h)
clf(h)
function [val] = Store_Move_to_Next(hObject,h,l,k)
n = length(hObject);
for i=1:n;
if k(i)==1
%For text edit.
val.text(:,i) = str2double(get(hObject(i),'String'));
elseif k(i)==2;
%For listbox.
val.list(:,i) = (get(hObject(i),'Value'))';
end
if l == 1;
uiresume(h)
else
end
end
The code runs totally fine when I run it as a script but when I run it as a function I'll get something like:
Error using waitfor
Undefined function or variable 'h2'.
Error using waitfor
Error while evaluating uicontrol Callback
but h2, h3 and h are defined. Again, it runs fine as a script but when I run it as a function it does not pass the figure (or uicontrol) handles to the callback functions.
Thank you in advance for your help,
Krsto
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回答（2 个）
Walter Roberson
2013-4-25
0 个投票
Callbacks that are strings are evaluated in the base workspace. Your h2 and so on are not being defined in the base workspace: they are being defined in the workspace of Heat_Sink_UI
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