IMediaParams::GetParam
The GetParam method retrieves the current value of the specified parameter. If the parameter is currently within an envelope segment, the returned value is the value on the most recently processed sample.
Syntax
HRESULT GetParam(
DWORD dwParamIndex,
MP_DATA *pValue
);
Parameters
dwParamIndex
[in] Zero-based index of the parameter.
pValue
[out] Pointer to a variable of type MP_DATA that receives the parameter value.
Return Values
Returns an HRESULT value. Possible values include the following.
| Return Code | Description |
| E_INVALIDARG | Index out of range. |
| E_POINTER | NULL pointer argument. |
| S_OK | Success. |
Remarks
To enumerate the parameters supported by this object, along with their index values, use the IMediaParamInfo interface.
Requirements
Header: Medparam.h
Library: Dmoguids.lib.
See Also