| Microsoft DirectX 9.0 |
The CheckTransform method checks whether an input media type is compatible with an output media type.
Syntax
virtual HRESULT CheckTransform(
const CMediaType *mtIn,
const CMediaType *mtOut
) PURE;
Parameters
mtIn
Pointer to a CMediaType object that specifies the input type.
mtOut
Pointer to a CMediaType object that specifies the output type.
Return Value
Returns an HRESULT value. Possible values include those shown in the following table.
| Value | Description |
| S_OK | The media types are compatible. |
| VFW_E_TYPE_NOT_ACCEPTED | The media types are not compatible. |
Remarks
The derived class must implement this method. Return S_OK if the filter can accept both of the specified media types, or an error code otherwise.
See Also