Problem with getting output from KeyPressFcn

Hello, I have a KeyPressFcn with two input variables and i would like one output variable.

Example of the code:

h = figure
set(h,'KeyPressFcn',{@pushbutton_callback,var1,var2});

function outputVar = pushbutton_callback(src,event,var1,var2)
outputVar = var1*var2; 
end

The problem is that outputVar doesn't exist in the workspace afterwards...

I've read the documentation but still as it appears didn't really understand how to work with this function.

Thanks in advance.

[Adam]

Callbacks cannot define output arguments. You will need to save your value using e.g. guidata:

function pushbutton_callback(src,event,var1,var2)
   hGUIData = guidata( src );
   hGUIData.outputVar = var1*var2;
   guidata( src, hGUIData );
end

Then it can be accessed via

hGUIData = guidata( h )
hGUIData.outputVar