Help on Disappearing Popupmenu
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So I've created a GUI with a popupmenu, but it seems that whenever I try to populate the menu, it disappears, anyone know what going on. Thanks in advance. Heres an example of what I am trying to do.
var1 = {'Ex1','Ex2','Ex3'}
for i =1:length(var1)
set(handles.popupmenu1,'String',var1(i),'Value',i)
end
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채택된 답변
Image Analyst
2014년 7월 14일
That code you gave will give you a single item (the last one) in the popup. Do not use a for loop. The items in a popup or listbox are not entered in one at a time like you tried, they are done all at once with a single call to set the string property. What you did was to set the entire list to just a single item, and you did it 3 times (once on each iteration of your for loop). Since there is only one item in there, and the value is now 3 (which is more than 1), the popup will not display.
To fix, send in all the items in one shot, then set the value.
var1 = {'Ex1', 'Ex2', 'Ex3'}
set(handles.popupmenu1, 'String', var1); % Send in all 3 items at once.
set(handles.popupmenu1, 'Value', length(var1)); % Set what item is selected (the last one).
추가 답변 (1개)
Azzi Abdelmalek
2014년 7월 14일
편집: Azzi Abdelmalek
2014년 7월 14일
Why the for loop?
var1 = {'Ex1','Ex2','Ex3'}
i=1
set(handles.popupmenu1,'String',var1,'Value',i)
댓글 수: 4
Image Analyst
2014년 7월 14일
Azzi's code is correct. If it doesn't work, then do it in two separate steps, set the string first, and then the value. Do not use a for loop. The items are not entered in one at a time like you tried, they are done all at once with a single call to set the string property.
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