Hot to set fields from one GUI to another

Question

Lorenzo 2014-1-21

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/113107-hot-to-set-fields-from-one-gui-to-another

评论： Lorenzo 2014-1-22

采纳的回答： Mischa Kim

Dear all,

I've been able to transfer variables from one gui to another, there's plenty of stuff around on that.

What I haven't been able to do is to set a field of a GUI from another GUI.

Here's an example: I have two GUIs opened: GUI1 and GUI2. GUI1 has a text box, GUI2 has a push button. Now, when I push the button on GUI2 I would like so set the string in the text box of GUI1 to something.

How can I achieve this?

Thanks!

Lorenzo

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Answer 1

Mischa Kim 2014-1-21

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https://ww2.mathworks.cn/matlabcentral/answers/113107-hot-to-set-fields-from-one-gui-to-another#answer_121617

Hello Lorenzo, check out this answer.

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Lorenzo 2014-1-21

Thanks a lot Mischa. I'm not sure the answer you posted is for the same issue I am having though (but I might be wrong...)

What I need is to have something like this in my sub_GUI: set(mainGui.edit,'String','My string')

Thanks again!

Lorenzo

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Answer 2

Jan 2014-1-21

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/113107-hot-to-set-fields-from-one-gui-to-another#answer_121634

编辑：Jan 2014-1-21

在 MATLAB Online 中打开

If you can provide variables from one GUI to the other, you can provide the handles struct also. And there you find the handles of the GUI objects. If your GUIs have the tags "GUI1" and "GUI2" (a bad choice, by the way), you can set the text of an object in GUI1 from a callback of GUI2:

function ButtonCallback(hObject, EventData, handles)
% Better do this once only!
gui1H = findobj(allchild(0), 'flat', 'tag', 'GUI1');   % [EDITED]
gui1Handles = guidata(gui1H);
set(gui1Handles.Button1, 'String', 'hello')

Add a TRY/CATCH for a meaningful error message, if the 2nd GUI has been closed before.

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Lorenzo 2014-1-21

Thanks Jan.

Quick question: as you said, this way I can set a textBox in GUI1 using a button in GUI2. To this extent, why is your findobj looking for GUI2 instead of GUI1 if the handle I need to set is GUI1?

Thanks again!

Jan 2014-1-21

@Lorenzo: This was a typo. Fixed now.

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Answer 3

Lorenzo 2014-1-21

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/113107-hot-to-set-fields-from-one-gui-to-another#answer_121638

编辑：Lorenzo 2014-1-21

在 MATLAB Online 中打开

Mischa, Jan,

I found my answer in Mischa's link: in my GUI2 I now have:

function pushbutton1_Callback(hObject, eventdata, handles)
mainGUIdata = guidata(GUI1);
set(mainGUIdata.edit1, 'String', 'Hello')

and this is working.

Now, what is the purpose of

gui2H = findobj(allchild(0), 'flat', 'tag', 'GUI2');

in Jan's reply?

Thanks again for your time.

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Lorenzo 2014-1-22

在 MATLAB Online 中打开

The fact is no matter what I keep getting:

gui1H =
     Empty matrix: 0-by-1

Lorenzo 2014-1-22

Sorry to keep adding stuff... it appears to be working now, I had to use My GUI's tag in the place of 'GUI1', still, I would be interested if there was a more direct way to do this when my gui is started

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