Creating a user interface without GUIDE

Question

Mel 2011-7-4

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https://ww2.mathworks.cn/matlabcentral/answers/10849-creating-a-user-interface-without-guide

I am trying to create a sort of user interface without the use of GUIDE. I need to include start and stop buttons for my data collection (with DataQ). The following is a glimpse of the code I am have difficulties with: ... uicontrol('Style', 'pushbutton','String', 'Start',... 'Position', [20 390 50 20],... 'Callback', {@starting}); uicontrol('Style', 'pushbutton','String', 'Stop',... 'Position', [70 390 50 20],... 'Callback', {@stopping}); end

function starting(dataqsdk1)

%Start Acquiring Data dataqsdk1.Start; dataqsdk1.GetData;

I am having difficulties creating the callback function to begin and stop data collection. At the moment, based on the above code, I am getting the following error:

??? Error using ==> DataqSDK>starting Too many input arguments.

??? Error while evaluating uicontrol Callback

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Answer 1

Paulo Silva 2011-7-4

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https://ww2.mathworks.cn/matlabcentral/answers/10849-creating-a-user-interface-without-guide#answer_14903

在 MATLAB Online 中打开

you are missing arguments, try like this

'Callback', {@starting,dataqsdk1}

and

function starting(obj,ev,dataqsdk1)

same goes for the other functions you may have

Reference: Creating and Executing Callback Functions

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Jan 2011-7-4

@Mel: Remember, that the callback "@funcname" needs the function header: "function funcname(ObjH, EventData)". See "Creating and Executing Callback functions" in the documentation.