WLXSlideshow.dll

Source	src/WLXSlideshow/
CMake target	WLXSlideshow
Type	Win32 COM DLL
Family	Pipeline & effects targets

At a glance

The slideshow generation engine shared across Windows Live photo/video apps: takes an ordered set of photos plus a style, and produces an animated slideshow (Ken Burns moves, crossfades, timed transitions). In Movie Maker it powers the auto-movie/slideshow creation flows.

Public surface

The standard COM quartet (WLXSlideshow.def):

DllCanUnloadNow     DllGetClassObject
DllRegisterServer  DllUnregisterServer

Relationship to other modules

• WLXPhotoCinematic computes the cinematic moves (Ken Burns pan/zoom analysis) that slideshows consume.
• WLXPipetran supplies transition animations between slides.
• MovieMakerCore's StoryboardManager/Templates exposes slideshow themes (7 themes) at the editor level.

Implementation notes

• COM class factory is real and contract-pinned.
• The reconstruction implements slideshow sequencing (durations, transition selection, effect parameters); rendering runs through the host application's pipeline.

Testing

• tests/WLXSlideshow/ — per-module C++ tests.
• Contract coverage for COM activation in tests/mmr-python.
• Exercise app: apps/slideshow-studio (submodule).

Analysis artifacts

analysis/WLXSlideshow/.