FEof Function |  |
Determine if the file pointer is positioned at the end-of-file.
Namespace: XSharp.Core
Assembly: XSharp.Core (in XSharp.Core.dll) Version: 2.21
SyntaxRequest Example
View Source
TRUE if the file pointer is at end-of-file; otherwise, FALSE.
Parameters
- ptrHandle
- Type: IntPtr
The handle of an open file.
Return Value
Type: LogicTRUE if the file pointer is at end-of-file; otherwise, FALSE.
RemarksRemarks Tip |
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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) |
Examples
This example checks for end-of-file after attempting to move 101 bytes:
This example reads the entire file, one line at a time, until it reaches the end-of-file:
X#
1LOCAL ptrHandle AS PTR 2ptrHandle := FOpen("docu.txt") 3FSeek(ptrHandle, 101) 4? FEOF(ptrHandle)
X#
1ptrHandle := FOpen2("docs.txt", FO_READ) 2IF ptrHandle != F_ERROR 3 DO WHILE !FEOF(ptrHandle) 4 ? FReadLine2(ptrHandle, 80) 5 ENDDO 6ENDIF 7FClose(ptrHandle)
See Also