FileRead
Read data from a file handle in a buffer.
Declaration
Source position: filutilh.inc line 225
function FileRead(Handle: THandle; out Buffer; Count: LongInt) : LongInt;
Description
FileRead reads Count bytes from file-handle Handle and stores them into Buffer. Buffer must be at least Count bytes long. No checking on this is performed, so be careful not to overwrite any memory. Handle must be the result of a FileOpen call.
The function returns the number of bytes actually read, or -1 on error.
For an example, see FileCreate
Errors
On error, -1 is returned.
See also
| Name | Description |
|---|---|
| FileClose | Close a file handle. |
| FileCreate | Create a new file and return a handle to it. |
| FileOpen | Open an existing file and return a file handle |
| FileSeek | Set the current file position on a file handle. |
| FileTruncate | Truncate an open file to a given size. |
| FileWrite | Write data from a buffer to a given file handle. |