can pushbutton work without a function ????

Question

Jules Ray 2014-9-16

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评论： Jules Ray 2014-9-17

Hello guys, i'm having problems with a pushbutton. I created a pushbutton inside a figure, however i cant use a nested function or another .m file to make it work. This button should work as itself. This is the code.

button1=uicontrol(gcf,'style','pushbutton','string','Save projected points','Position', [20 140 150 40],'ButtonDownFcn','1'); %pushbutton
if ((str2double(get(button1,'string'))) == 1)
disp('u did it')    
end

however this is not working, how to call the handles of the button or mayby just detect if this was pressed???

maybe is an stupid question, but thanx anyway

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Answer 1

Geoff Hayes 2014-9-16

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在 MATLAB Online 中打开

Jules - use Callback instead of ButtonDownFcn to detect when the button has been pressed. Try something like the following

 function example_gui
    button1=uicontrol(gcf,'style','pushbutton','string',...
                     'Save projected points',          ...
                     'Position', [20 140 150 40],      ...
                     'Callback',{@buttonCallback});
    function buttonCallback(hObject,eventData)
        disp('u did it')    
    end
 end

The buttonCallback is a nested function within the main exmaple_gui code. When you run the above, and press the button, you will observe u did it written to the console.