Resetting a pop-up menu in a GUI

Question

C Meek 2011-12-1

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/22734-resetting-a-pop-up-menu-in-a-gui

Hey all,

In my GUI I have a drop down menu with four options, the first (& default) option being 512. I also have a reset button, which sets everything else in the GUI back to its default options.

My problem is I'm not sure how to set a drop down menu back to its default option, in this case being the first entry in the list.

My drop down menu is tagged frame_size_2. I know the code, placed in the callback for the reset button, is something along these lines:

set(handles.frame_size_2,'Value')

But I can't work out what is supposed to go in the 'Value' part.

Any tips?

As always, thanks in advance for any help.

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Answer 1

Sean de Wolski 2011-12-1

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https://ww2.mathworks.cn/matlabcentral/answers/22734-resetting-a-pop-up-menu-in-a-gui#answer_29907

在 MATLAB Online 中打开

set(handles.frame_size_2,'Value',n)

where n is the index to the line you want. And a good tip for remembering, set has three inputs, get has two.

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C Meek 2011-12-1

Literally worked this out just before you posted. Thanks all the same - your tip about the number of inputs for set and get will be useful as I often forget!

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