GUI help in calling an if elseif else function

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Aser Zidan
Aser Zidan 2019-7-16
评论： Walter Roberson 2019-7-16
Hi all,
I am trying to call out this if elseif else function in the GUI. So basically, the "what case box" represent the casenum, and the empty static box should call out a msg when "what case box" has a value.

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回答（1 个）

Walter Roberson
Walter Roberson 2019-7-16
Use the Callback property of the edit box to trigger the action. Remember that the edit box will be char (or cell array of char if Max>1 for the edit box) so you will need to str2double.
Note: you should not have any condition on the "else".
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Aser Zidan
Aser Zidan 2019-7-16
hi,
Actually when try to run it now, this code pops up:
Undefined function or variable 'gui_mainfcn'.
Error in demo2 (line 42)
gui_mainfcn(gui_State, varargin{:});
Walter Roberson
Walter Roberson 2019-7-16
What is the result you expect from
str2double(set(handles.output, 'string'))
? Notice that is a set() call, not a get() call.

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