How do I pass a value out of a GUI when button is pressed? The value must be available to another m file
조회 수: 2 (최근 30일)
이전 댓글 표시
Hello,
I am making a GUI which adds rows to a matrix in one part. I want the matrix to be available to another m-file when I press another button (export). I've been looking at this for two weeks and can't figure it out. What is the syntax to make this matrix available to another function? eg x = function (y, exported_matrix). The normal [export_matrix] =Callback_pushbutton(....) doesn't work for GUI's. Can someone explain this? Sorry, this is probably basic but I can't see by any examples how this would work with my own GUI.
Thanks,
Brian
댓글 수: 0
채택된 답변
Brian
2013년 6월 25일
댓글 수: 1
Image Analyst
2013년 6월 25일
You had said "I have tried global, ..., I have been at this for three days, I'm not getting it. " I guess you eventually got it right.
추가 답변 (2개)
Image Analyst
2013년 5월 26일
Did you ever stumble upon the FAQ: http://matlab.wikia.com/wiki/FAQ#How_can_I_share_data_between_callback_functions_in_my_GUI.28s.29.3F
Jan
2013년 6월 21일
편집: Jan
2013년 6월 21일
Assume your GUI has the tag-property 'MyGUI' (a more meaningful tag is recommended...). Then the store the matrix in the handles struct inside the GUI:
handles.matrix = rand(10, 10); % Or how ever you define the elements
guidata(hObject, handles); % 1st argument: handle of the current object
Now obtain the matrix from your external M-file:
function theExternalFunction
guiHandle = findobj(allchild(0), 'flat', 'tag', 'MyGUI');
guiHandles = guidata(guiHandle);
matrix = guiHandles.matrix;
...
guidata() is a wrapper for setappdata() and getappdata(). Some exceptions should be caught by tests, e.g. if the guiHandle cannot be found because the GUI has been closed before, etc.
참고 항목
카테고리
Help Center 및 File Exchange에서 Interactive Control and Callbacks에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!