IPropertySetter::SaveToBlob method
[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
Note
[Deprecated. This API may be removed from future releases of Windows.]
The SaveToBlob method saves the property data to a persistence format.
Syntax
HRESULT SaveToBlob(
[out] LONG *pcSize,
[out] BYTE **ppb
);
Parameters
-
pcSize [out]
-
Receives the size of the data, in bytes.
-
ppb [out]
-
Receives a pointer to an array of bytes that receives the data.
Return value
If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.
Remarks
The method allocates memory for the byte array. The caller must free it, using the CoTaskMemFree function.
All property names and values are truncated to 40 characters in length. For this reason, XML is the preferred persistence format. See IXml2Dex Interface.
Note
The header file Qedit.h is not compatible with Direct3D headers later than version 7.
Note
To obtain Qedit.h, download the Microsoft Windows SDK Update for Windows Vista and .NET Framework 3.0. Qedit.h is not available in the Microsoft Windows SDK for Windows 7 and .NET Framework 3.5 Service Pack 1.
Requirements
| Requirement | Value |
|---|---|
| Header |
|
| Library |
|
See also