activex PowerPoint Application Saving as ".ppt" default, not ".pptx" ?

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Kevin
Kevin on 4 Jan 2012
I am trying to write a powerpoint using activex and in doing so specify the name of the file I would like to save as something like 'MySlides.pptx'.
I have 2010 office loaded on my PC, but for some reason it is saving the new file as 'MySlides.pptx.ppt' which is defaulting to 2007 format of '.ppt'. How can I specify what format of slides I would like to open and save the presentation as? Thanks
%HERE IS HOW I CALL THE CODE, SIMPLIFIED
filespec = 'MySlides.pptx';
ppt = actxserver('PowerPoint.Application');
op = invoke(ppt.Presentations,'Open',filespec,[],[],0);
%THEN MODIFY SLIDES...
%NOW SAVE
invoke(op,'SaveAs',filespec,1);

Accepted Answer

Fangjun Jiang
Fangjun Jiang on 4 Jan 2012
try invoke(op,'SaveAs',filespec,11); 11 is ppSaveAsDefault. Go to PowerPoint help, Visual Basic Reference, Enumerations, PpSaveAsFileType to see all the enumeration values.

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