CBasePin::TryMediaTypes (Windows CE 5.0)
Determines a media type for a pin connection.
virtual HRESULT TryMediaTypes(IPin* pReceivePin,const CMediaType* pmt,IEnumMediaTypes* pEnum);
Parameters
- pReceivePin
Pointer to the IPin interface of the receiving pin. - pmt
Pointer to a returned media type. - pEnum
Pointer to an IEnumMediaTypes enumerator interface.
Return Values
Returns an HRESULT value, which can include the following.
| Value | Description |
|---|---|
| FAILED | Resetting of the enumerator failed. |
| NOERROR | Media type found. |
| VFW_E_NO_ACCEPTABLE_TYPES | No acceptable media types were found. |
Remarks
Given an enumerator, this member function cycles through all media types proposed by the enumerator.
Each type is suggested to the derived pin class and, if acceptable, is tried with the connected pin in a call to the IPin::ReceiveConnection method.
This means that if the owning pin proposes a media type, it is still checked to determine whether it is supported. This is deliberate so that, in simple cases, the enumerator can hold all media types, even if some are not currently available.
This member function is protected.
Requirements
DirectShow applications and DirectShow filters have different include file and link library requirements.
For more information, see Setting Up the Build Environment.
OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
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