How to start a macro automatically on next slide

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Chris - 24 Sep 2007 15:08 GMT

I would like to start a macro when you move to the next slide, at present I
can only start the macro using a button. The macro controls some external
equipment that I want to exercise alongside the presentation without my
interaction.

Thanks
Chris

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Bill Dilworth - 24 Sep 2007 15:53 GMT

You will need to create an event trap or use one of the ready-made event
trap add-ins. Here is a faq with more info:

Make PPT respond to events
http://www.pptfaq.com/FAQ00004.htm

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>I would like to start a macro when you move to the next slide, at present I
> can only start the macro using a button. The macro controls some external
[quoted text clipped - 3 lines]
> Thanks
> Chris

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John Wilson - 24 Sep 2007 16:20 GMT

As Bill says if you are confident with events this is the way to go.

But if you aren't you could try this sneaky trick. Have a full screen 99%
transparent (ie invisible) shape appear at the start of the slide with custom
animation. Give it an action setting of MOUSEOVER> run macro. This will work
best in kiosk mode or if you press ctrl A at the start of the presentation

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> I would like to start a macro when you move to the next slide, at present I
> can only start the macro using a button. The macro controls some external
[quoted text clipped - 3 lines]
> Thanks
> Chris

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Chris - 24 Sep 2007 19:10 GMT

I have created an event trap that I start on the first slide. I then
execute code on the slideID. If I execute a simple message box then
everything works okay and the presentation can loop and the code executes on
every pass. However if I execute my code that drives some external equipment
(takes about 10s to complete) then on the next loop the event is not captured
and I have to restart the event trap again. I have tried to add a call to
the event trap when my code terminates, although it confirms the active
state, it still does not seem to work.

Any ideas? Many thanks

Chris

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Bill Dilworth - 24 Sep 2007 23:31 GMT

Often, if the code encounters an error, it will simply stop working. Try to
insert a simple error trap that pops a message box. See if this helps
narrow down the problem.

Bill Dilworth

> I have created an event trap that I start on the first slide. I then
> execute code on the slideID. If I execute a simple message box then
[quoted text clipped - 11 lines]
>
> Chris

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Chris - 25 Sep 2007 08:40 GMT

Yup, I had an 'end' statement right at the end of my code for no reason.

Thanks for all your help - everything is now working perfectly.

Chris

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