Initialize contents of popupmenu in GUIDE

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George
George 2013-9-21
I am writing a GUI in GUIDE which contains a popup menu. In the Property Inspector the String property is empty. The contents of the menu must be filled during execution and are assigned values from a structure as such:
a = {AlertFD.name};
set(handles.popupmenu1, 'String', a);
and the user input is assigned to b:
b = get(handles.popupmenu1, 'Value');
The problem occurs when I run the GUI: when I first click on the menu, I see an empty cell. I click on the empty cell and then the first element of cell a is shown and automatically passed as user input to b , even though I do not wish to select it.
Any solutions? Thanks, George

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Image Analyst
Image Analyst 2013-9-21
You need to set both the string and the value in the OpeningFcn function (if that doesn't work, then put it in the OoutputFcn function). Since you did not set the value (you only retrieved it) no item will be selected/shown when your GUI starts up.
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Image Analyst
Image Analyst 2013-9-24
Well something somewhere is changing it. You might have to step through your code calling
contents = get((handles.popupmenu1, 'String')
at each step to see what changes it.
George
George 2013-9-24
编辑：George 2013-9-24
I've found out that the problem was not the 'String' property; instead the problem was caused by the 'Value' property. Apparently this was kept in the previously assigned value. I am setting it manually within the Callback and it works fine now. Thanks for the help, much appreciated!
(Apologies for misusing the reply text boxes)

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