IMFMediaBuffer::Unlock Method
Unlocks a buffer that was previously locked. Call this method once for every call to IMFMediaBuffer::Lock.
Syntax
HRESULT Unlock();
Parameter
Methode umfasst keine Parameter.
Rückgabewert
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Rückgabecode | Beschreibung |
|---|---|
| S_OK | The method succeeded. |
| D3DERR_INVALIDCALL | For Direct3D surface buffers, an error occurred when unlocking the surface. |
Hinweise
It is an error to call Unlock if you did not call Lock previously.
After calling this method, do not use the pointer returned by the Lock method. It is no longer guaranteed to be valid.
This interface is available on the following platforms if the Windows Media Format 11 SDK redistributable components are installed:
- Windows XP mit Service Pack 2 (SP2) und höher.
- Windows XP Media Center Edition 2005 with KB900325 (Windows XP Media Center Edition 2005) and KB925766 (Oktober 2006 Updaterollup für Windows XP Media Center Edition) installed.
Anforderungen
Mindestens unterstützter Client |
Windows Vista |
Mindestens unterstützter Server |
Windows Server 2008 |
Header |
Mfobjects.h (include Mfidl.h) |
Bibliothek |
Mfuuid.lib |