Get a list of all UI Components used in GUI

Hi All!

I'm working on a program which has several input fields, takes the filled in information by the user and starts a query to a database with the specified conditions (something like "SELECT * FROM Foo WHERE Field = 'specified value' AND (...)"). The retrieval works fine, but my approach is really cumbersome and errorprone at the moment. Here is how i construct the WHERE-clause:

function where_clause = constructWhereClause(handles)

where_clause = '';
bezeichnung_arr = get(handles.bezeichnung_edit, 'UserData');
if ~isempty(bezeichnung_arr{2})
    where_clause = [ bezeichnung_arr{1}  '=''' bezeichnung_arr{2} ''''];
end
derivat_arr = get(handles.derivat_popup, 'UserData');
if ~isempty(derivat_arr{2})
    if ~isempty(bezeichnung_arr{2})
        where_clause = [where_clause ' AND '];
    end
    where_clause = [where_clause derivat_arr{1} '=''' derivat_arr{2} ''''];
end

My question is: Is there a way to get a list of all ui components of a gui so I can iterate over them and access their "UserData" property in a for-loop? Since there are many edit fields more to come, this approach will not be the best to construct my statement.

Thanks in advance!

Answer 1

[Adam]

doc findobj
doc findall

should work.

You can do e.g.

editBoxHandles = findobj( guiHandle, 'style', edit' );

Obviously you don't have to limit to edit boxes either, you can just get a full list of everything.

[M D]

Hi Adam!

Thanks for the response. The line

findobj(guihandles, 'style', 'edit' )

somehow returns an empty GraphicsPlaceholder array. Instead, leaving the "parent"-handle parameter out gives me the desired result, like this:

findobj('style', 'edit' );

Nevertheless, thank you for your fast and useful help! :)