This topic documents a feature of Visual Filters and Transitions, which is deprecated as of Windows Internet Explorer 9 and obsolete as of Internet Explorer 10.
Retrieves the value used for threshold filtering operations.
HRESULT GetThreshold( float *pVal );
- [out] Pointer to the threshold value.
Returns an HRESULT value that depends on the implementation of the interface.
For the threshold filtering adjustment, each sample color channel with a value below pVal*255 is set to 0. Each color channel with a value equal to or over that threshold is set to 255.