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.
Tests whether an input data object is associated with the specified input index.
BOOL HaveInput( ULONG i );
- [in] Index of the input to check. The default value is zero.
Returns a Boolean value that indicates whether a transform input has been defined. For multiple inputs, you can check each input by calling this function with the index of the input as the parameter.