IAsyncReader::SyncRead (Windows CE 5.0)
This method performs a synchronous read.
HRESULTSyncRead(LONGLONGllPosition,LONGlLength,BYTE* pBuffer);
Parameters
- llPosition
[in] Absolute file position. - lLength
[in] Number of bytes required. - pBuffer
[out] Where the data is written.
Return Values
Returns an HRESULT value that depends on the implementation of the interface. Current DirectShow implementation return values include the following.
| Value | Description |
|---|---|
| VFW_E_BADALIGN | An invalid alignment was specified. |
| HRESULT_FROM_WIN32 | Microsoft Win32® error. |
| S_FALSE | Size changed (probably due to end of file). |
| S_OK | Success. |
Remarks
The SyncRead method works in a stopped state as well as in a running state. The read is not necessarily aligned. This method fails if the read is beyond the actual total length.
Requirements
DirectShow applications and DirectShow filters have different include file and link library requirements. See Setting Up the Build Environment for more information.
OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
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