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IAMOverlayFX::QueryOverlayFXCaps

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Microsoft DirectShow 9.0

IAMOverlayFX::QueryOverlayFXCaps

The QueryOverlayFXCaps method retrieves information about which overlay effects are available to the Overlay Mixer filter.

Syntax

  HRESULT QueryOverlayFXCaps(
  DWORD *lpdwOverlayFXCaps
);

Parameters

lpdwOverlayFXCaps

[out] Pointer to a variable that receives a value indicating the overlay effects capabilities of the overlay surface. The value is a logical combination of flags from the AMOVERLAYFX enumeration.

Return Values

Returns an HRESULT value that depends on the implementation of the interface. The DirectShow implementation returns one of the following values.

Return code Description
E_FAIL Failure.
E_POINTER Null pointer argument.
S_OK Success.

Requirements

Header: Declared in Strmif.h; include Dshow.h.

Library: Use Strmiids.lib.

See Also