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how to change the value of a gui object using an external function (i.e without using the m file associated with the gui)?

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PN
PN 2012-11-8
Hello there,
The question is quite self-explanatory so i'll just add an example to make it clearer:
function [csnames] = editcs (value)
global CSPROPS
CSinterface(); *%%this initiates the GUI*
global matprops
% reset materials
matnames = cell(length(CSPROPS(value).matprops),1);
for m = 1:length(CSPROPS(value).matprops)
matnames(m) = {CSPROPS(value).matprops(m).name};
end
set(handles.list_materials,'String',matnames);
%%here is where i am getting my error, which i find is probably due to any syntax error when calling out what handles.list_materials refers to.
Would really appreciate if anyone could give me an insight on this.
PN.
  1 个评论
Jan
Jan 2012-11-8
No, the question is definitively not self-explanatory. You assume a syntax error, but you do not mention the occurring error message or MLint warning. If there is no such message, why do you think, that it is probably a syntax error?
Btw.: This is more efficient:
matnames{m} = CSPROPS(value).matprops(m).name;
By this way Matlab does not have to create a cell array on the right hand side at first, but can insert the value directly in the existing cell on teh left hand side.

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回答（1 个）

Walter Roberson
Walter Roberson 2012-11-8
Was the GUI made with GUIDE? If so then
guihandle = CSinterface();
handles.list_materials = findobj(guihandle, 'tag', 'list_materials');

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