matlab - 如何防止在matlab中关闭输入对话框？

Question

如何避免用户直接关闭输入对话框而不输入任何值？对于“菜单”功能，我们可以使用 while options==0 来形成循环，用于未选择的选项，但是输入对话框呢？

prompt = {'输入增益：'，'输入范围：'};

dlg_title = '输入值';

num_lines = 1;

def = {'20','256'}; ％默认

答案 = inputdlg（提示，dlg_title，num_lines，def）；

%%%获取输入的两个值%%%%

%A = getfield(answer,{1}); %第一个输入字段

A = str2double(answer{1});

%B = getfield(answer,{2}); %第二个输入字段

B = str2double(answer{2});

假设我有一个如图所示的输入对话框，我如何用循环完整地建模它

Answer 1

您无法阻止它被关闭，但您可以使用 while 循环重新打开它，直到用户输入有用的值。

done = false;
while ~done
    a=inputdlg('enter a number')
    num = str2double(a{1}); %# will turn empty and strings into NaN
    if isnumeric(num)
       done = true;
    else
       %# keep running while loop
       %# you can pop up an errordlg box here to tell the user what was wrong.
       %# It would be nice if you were to set the inputs that passed the test
       %# as defaults for the next call of inputdlg. Nothing sucks as much 
       %# as having to completely re-fill a form because of a small typo
    end
end