 Important: |
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This method retrieves the specified number of items in the enumeration sequence.
Syntax
HRESULT Next( ULONG cMediaTypes, AM_MEDIA_TYPE** ppMediaTypes, ULONG* pcFetched ); |
Parameters
- cMediaTypes
-
[in] Number of media types to place.
- ppMediaTypes
-
[out] Array in which to place the pointers to the next media type.
- pcFetched
-
[out] Actual count passed.
Return Value
Returns an HRESULTvalue that depends on the implementation.
HRESULTcan be one of the following standard constants or other values not listed.
| Value | Description |
|---|---|
|
E_FAIL |
Failure. |
|
E_POINTER |
Null pointer argument. |
|
E_INVALIDARG |
Invalid argument. |
|
E_NOTIMPL |
Method is not supported. |
|
S_OK or NOERROR |
Success. |
Remarks
To use this method, pass an array of pointers to media types.
If you want only a single media type, you can pass a pointer to a media type pointer in place of an array of media type pointers.
The interface allocates the necessary AM_MEDIA_TYPEstructures and initializes them with the variable format block.
Free each media type by calling DeleteMediaType, which will free the format block and the media type itself.
Requirements
| Windows Embedded CE | Windows CE 2.12 and later |
| Windows Mobile | Pocket PC for Windows Mobile Version 5.0 and later, Smartphone for Windows Mobile Version 5.0 and later |
| Note | Microsoft DirectShow applications and DirectShow filters have
different include file and Library requirements
For more information, see Setting Up the Build Environment,Version 2.12 requires DXPAK 1.0 or later |