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From: RobuLAB on 21 May 2010 06:05
Hi,
I'm writing a GUI that has a menu bar in which I have a "save" and a "save as" function.
The "save"-function is for when a user loads a file, changes it and wants to save it in the same location under the same name. It is also possible to work with the GUI without loading a file. In that case, when the user presses "save", I want the callback for "save as" to kick in so the user can choose a name and location.
I can easily program a switch statement in my "save"-function which would execute the same code as "save as" would do when there hasn't been a file loaded, but that would mean that my program has two times the same code in it.

Is there a way to do:
(pseudo-code)
if (no file loaded)
jump to save_as
else
save (same name and location as the loaded file)
end

Thanks in advance
From: Royi Avital on 21 May 2010 06:40
Why won't you create a "Flag" for "Image Loaded".
The create to functions just as you described.
You chose which function to run using the Flag.
The Flag default should be a value which runs the "Save As" function.

"RobuLAB " <amaury.ampe(a)etu.u-bordeaux1.fr> wrote in message <ht5lsj$87o$1(a)fred.mathworks.com>...
> Hi,
> I'm writing a GUI that has a menu bar in which I have a "save" and a "save as" function.
> The "save"-function is for when a user loads a file, changes it and wants to save it in the same location under the same name. It is also possible to work with the GUI without loading a file. In that case, when the user presses "save", I want the callback for "save as" to kick in so the user can choose a name and location.
> I can easily program a switch statement in my "save"-function which would execute the same code as "save as" would do when there hasn't been a file loaded, but that would mean that my program has two times the same code in it.
>
> Is there a way to do:
> (pseudo-code)
> if (no file loaded)
> jump to save_as
> else
> save (same name and location as the loaded file)
> end
>
> Thanks in advance
From: Steven Lord on 21 May 2010 09:53

"RobuLAB " <amaury.ampe(a)etu.u-bordeaux1.fr> wrote in message
news:ht5lsj$87o$1(a)fred.mathworks.com...
> Hi,
> I'm writing a GUI that has a menu bar in which I have a "save" and a "save
> as" function.
> The "save"-function is for when a user loads a file, changes it and wants
> to save it in the same location under the same name. It is also possible
> to work with the GUI without loading a file. In that case, when the user
> presses "save", I want the callback for "save as" to kick in so the user
> can choose a name and location. I can easily program a switch statement in
> my "save"-function which would execute the same code as "save as" would do
> when there hasn't been a file loaded, but that would mean that my program
> has two times the same code in it.
>
> Is there a way to do:
> (pseudo-code)
> if (no file loaded)
> jump to save_as
> else save (same name and location as the loaded file)
> end
>
> Thanks in advance

You have a callback function for your "Save As" button, right? Just call
it.

if fileNotLoaded
SaveasButton_Callback(...) % fill in the appropriate parameters
return
end
% otherwise continue with the rest of the SAVE callback

--
Steve Lord
slord(a)mathworks.com
comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ
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