IAVIStream::ReadData method (vfw.h)
The ReadData method reads data headers of a stream. Called when an application uses the AVIStreamReadData function.
Syntax
HRESULT ReadData(
DWORD fcc,
LPVOID lp,
LONG *lpcb
);
Parameters
fcc
Four-character code of the stream header to read.
lp
Pointer to the buffer to contain the header data.
lpcb
Size, in bytes, of the buffer specified by lpBuffer. When this method returns control to the application, the contents of this parameter specifies the amount of data read.
Return value
Returns the HRESULT defined by OLE.
Remarks
For handlers written in C++, ReadData has the following syntax:
HRESULT ReadData(DWORD fcc, LPVOID lp, LONG *lpcb);
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | vfw.h |
| Library | Vfw32.lib |