Random values by default? [GUI]

Hi,
i created the following script:
function pushbutton1_Callback(hObject, eventdata, handles)
global cb7;
global cb8;
if (cb7 == 0)
%(action1)
end
if (cb8 == 0)
%(action2)
end
function checkbox7_Callback(hObject, eventdata, handles)
a=get(hObject,'Value');
global cb7;
if (a==1)
cb7=0;
else
cb7=1;
end
function checkbox8_Callback(hObject, eventdata, handles)
a=get(hObject,'Value');
global cb8;
if (a==1)
cb8=0;
else
cb8=1;
end
When i push the button, cb7 is "1" and cb8 is "0". How can that be? Only when i check and uncheck the boxes before pushing the button, both are "1".
Is it possible to set a default value?
Greetings

 采纳的回答

mec123 - you can set default values in the OpeningFcn of your GUI. Just do
set(handles.checkbox8,'Value',1);
to set the checkbox as checked and
set(handles.checkbox8,'Value',0);
to set the checkbox as unchecked.
Also, there is no need to use global variables. If you want one callback to access the values of the other controls, then use the handles structure as
function pushbutton1_Callback(hObject, eventdata, handles)
if get(handles.checkbox7,'Value') == 0
% do action 1
end
if get(handles.checkbox8,'Value') == 0
% do action 1
end

1 个评论

Thank you, that helped a lot. Im pretty new to matlab (as you probably can tell^^) and still learning, so i appreciate it ;).

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