RAD Studio VCL Reference
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TStreamAdapter.Read Method
TStreamAdapter Class | TStreamAdapter Members | Classes Namespace | Description | See Also
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Implements the IStream Read method.

Pascal
function Read(pv: Pointer; cb: Longint; pcbRead: PLongint): HResult; virtual; stdcall;
C++
virtual __fastcall __stdcall HRESULT Read(void * pv, Longint cb, PLongint pcbRead);
Description

Read reads up to cb bytes from the current position in the stream into the buffer pointed to by pv. pcbRead returns the number of bytes actually read. 

Read returns S_OK if it successfully reads pcbRead bytes into the buffer. It returns STG_E_INVALIDPOINTER it can't read because pv is nil (Delphi) or NULL (C++). It returns S_FALSE if the read operation fails for any other reason. 

 

See Also
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