IOverlay::GetColorKey

  • Article
 
Microsoft DirectShow 9.0

IOverlay::GetColorKey

The GetColorKey method retrieves the current color key used for chroma keying.

Syntax

  HRESULT GetColorKey(
  COLORKEY *pColorKey
);

Parameters

pColorKey

[out] Pointer to a variable that receives the current color key for chroma keying.

Return Value

Returns S_OK if successful. If the method fails, it returns an HRESULT error code.

Remarks

If you change the color key by using the IOverlay::SetColorKey method, all the advise links receive an IOverlayNotify::OnColorKeyChange callback method with the new color.

If no color key is currently being used, this method returns VFW_E_NO_COLOR_KEY_SET.

Requirements

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

Library: Use Strmiids.lib.

See Also