FReadText3 Function |
Namespace: XSharp.Core
FUNCTION FReadText3( ptrHandle AS IntPtr, ptrBufferVar AS BYTE[], dwBytes AS DWORD ) AS DWORD
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The low level File IO functions in the X# runtime are using .Net filestreams in the background. That means that the file handles returned by FOpen() and FCreate() are not 'normal' file handles, but unique identifiers that are used to find the underlying stream object in a collection of streams in the runtime. That also means that you can't use file handles for functions such as FRead() and FWrite() that were not created in the X# runtime. If you want to access the underlying FileStream, then you should call the function FGetStream(IntPtr) |
1DEFINE F_BLOCK := 128 2Function Start() 3 LOCAL cBuffer AS PTR 4 cBuffer := MemAlloc(F_BLOCK) 5 IF cBuffer = NULL PTR 6 RETURN FALSE 7 ENDIF 8 ptrHandle := FOpen("temp.txt") 9 IF ptrHandle = F_ERROR 10 ? DOSErrString(FError()) 11 RETURN FALSE 12 ELSE 13 IF FReadText3(ptrHandle, cBuffer, F_BLOCK) <paramref name="" /> F_BLOCK 14 ? DOSErrString(FError()) 15 RETURN FALSE 16 ENDIF 17 FClose(ptrHandle) 18 ENDIF 19 MemFree(cBuffer) 20 RETURN TRUE