IAMOverlayFX Interface
| Microsoft DirectShow 9.0 |
IAMOverlayFX Interface
The IAMOverlayFX interface controls how the video overlay appears on the user's screen. The Overlay Mixer filter implements this interface.
In addition to the methods inherited from IUnknown, the IAMOverlayFX interface exposes the following methods.
| Method | Description |
| QueryOverlayFXCaps | Retrieves information about which overlay effects are available to the Overlay Mixer filter. |
| SetOverlayFX | Applies the specified effects to the overlay surface. |
| GetOverlayFX | Retrieves the effects currently applied to the overlay surface, if any. |
Requirements
Header: Declared in Strmif.h; include Dshow.h.
Library: Use Strmiids.lib.