GUI to launch a function based on dropdown list
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Hi there, I'm trying to create a GUI that has a drop down list, the names correspond to different functions I would like to execute when I hit a 'load data' button. There is a simple gui in the examples but this preloads data from function; peaks, membrane etc. I want to select first and then execute. The functions go off an interogate a datbase.
hope someone has a sample gui i could use please?
dave
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Doug Hull
2012-4-27
The key concepts you will need here:
Use
get(handles.popupmenu1, 'string')
get(handles.popupmenu1, 'value')
to get the selected string.
Use a switch case to choose among the options.
In each option, you will need to create a function handle to the appropriate function, ie
fh = @interogateMethodA
or
fh = @interogateMethodB
etc.
Then you can use feval, or just fh(inputs) to execute the arbitrary function with whatever inputs you wish.
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Walter Roberson
2012-4-27
dispatch_table = {@fun1, @fun2, @fun3};
thisfun = dispatch_table(get(TheHandle, 'Value'));
thisfun(AppropriateArguments);
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Doug Hull
2012-4-27
The only thing I don't like here is if someone else modifies the order of the choices, or adds to them, this breaks (potentially). My switch case is more bullet proof to the common situation of someone messing with the GUI and not realizing the downstream impact.
David malins
2012-4-27
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Walter Roberson
2012-4-27
strs = cellstr(get(handles.popupmenu1, 'string'));
thisstr = strs{get(handles.popupmenu1, 'value')};
You would probably do this at the pushbutton callback.
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