As you can note above, we have a typical input element of type button that is set
as a target control to launch MediaFrame.
You can set a single control as the target by specifying the target control like
this: TargetControl="input1", then we specified that we want the slideshow to autostart
when the control is launched. This is a simple boolean setting : AutoStartSlideShow="true"
that will autostart the slideshow.
Toggle the declarative code into view to see the complete code.
test