MATLAB: UITable keeps making double CellSelection callback

app designerMATLABr2019auitable

The callback is used to add the selected cell to another table in the same uifigure yet it is behaviour changes it most of the time makes double callbacks and it sometimes only single which the correct behaviour required. Is any settings that can be looked at. Recently there was an upgrade from R2018b to R2019a which has more features and behaviour especially to the tables.

Any solutions?

I have made StackOverflow question, please take a look there is more code and details; for more reference. https://stackoverflow.com/questions/58166880/uitable-keeps-making-double-cellselection-callback

Best Answer

This may been have a bug in R2019a as R2019b resolves it.

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MATLAB: There is no GUI in Matlab 2018a just AppDesigner

Are you sure there's no GUIDE? I don't see any log saying they removed it. https://www.mathworks.com/help/matlab/release-notes.html

Try:

guide

There is also a support package to help you convert GUIDE code to AppDesigner code. Read the release notes.

MATLAB: In one UItable CellselectionCallBack fucntion can i call another UItable CellselectionCallBack function

You cannot "call" the callback function. Callback functions are event-driven, and therefore only triggered when the corresponding event occurs. What you want to do it to create a "central" variable that both callback function can access. So whenever a callback is executed, it will write the required value to the "central" variable, which other callback can also access anytime. The given image describe the scheme. Fortunately, every graphic object has a property called UserData which is there for the user to save data inside the graphics object handle. MATLAB itself never uses UserData property. In your case, you can use UserData property of figure object to save the values of selected cells. A general sketch to do this is

function CBuitable1(HObj, event)
  selectedCellTable1 = event.Indices;
    % access the selected cell of uitable2 from "central" varable as follow

    try
        selectedCellTable2 = HObj.Parent.UserData.table2;
    catch
        selectedCellTable2 = [];
    end
    % also remember to save the indices of Table1 to the "central" variable

    HObj.Parent.UserData.table1 = selectedCellTable1;
    % do other things you want

end

Similarly, for the second uitable, do it like this

function CBuitable2(HObj, event)
  selectedCellTable2 = event.Indices;
    % access the selected cell of uitable2 from "central" varable as follow
    try
        selectedCellTable1 = HObj.Parent.UserData.table1;
    catch
        selectedCellTable1 = [];
    end
    % also remember to save the indices of Table1 to the "central" variable
    HObj.Parent.UserData.table2 = selectedCellTable2;
    % do other things you want
end

Using this mechanism, you can share variables among several callbacks.

Best Answer

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MATLAB: In one UItable CellselectionCallBack fucntion can i call another UItable CellselectionCallBack function

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