IMFAttributes::GetDouble Method

Retrieves a double value associated with a key.

Syntax

public:
HRESULT GetDouble(
         REFGUID guidKey,
         double *pfValue
)

Parameters

guidKey
Type: REFGUID

[in]

GUID that identifies which value to retrieve. The attribute type must be MF_ATTRIBUTE_DOUBLE.

pfValue
Type: double *

[out]

Receives a double value. If the key is found and the data type is double, the method copies the value into this parameter. Otherwise, the original value of this parameter is not changed.

Return value

Type: HRESULT

The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Return codes

Return code	Description
S_OK	The method succeeded.
MF_E_ATTRIBUTENOTFOUND	The specified key was not found.
MF_E_INVALIDTYPE	The attribute value is not a double.

Refer to Media Foundation return codes.

Remarks

Requirements

Header: Declared in mfobjects.h (include mfidl.h).

Library: Use Mfuuid.lib.