TFileStream

Hello,

Can Anyone give me an example how to read from a file with TFileStream?

Greetings,

Wim
wimhhfAsked:
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kretzschmarCommented:
in which context?
0
wimhhfAuthor Commented:
I had a binary file:

I tried this:

var F: TFileStream
begin
  If OpenDialog1.Execute
  then Bestand.Create(OpenDialog1.FileName, fmOpenRead);
end;

the compiler gives a acces violation
0
geobulCommented:
Hi,

var F: TFileStream
begin
 If OpenDialog1.Execute then
   F := TFileStream.Create(OpenDialog1.FileName, fmOpenRead);
end;

Regards, Geo
0

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kretzschmarCommented:
as geo said,
fast geo :-(

;-)
0
geobulCommented:
Hi Meikl, I've got a new ISP and my connection goes at lightning speed :-)
0
wimhhfAuthor Commented:
But how can I read data on a specific address? Example: Data on address 0x0030.......
0
geobulCommented:
Hi,

var
  Buf: array[1..255] of char;
begin
  // initialize the buffer
  FillChar(Buf, SizeOf(Buf), Ord(' '));
  // move the current stream cursor to the desired position
  F.Seek(48, soFromBeginning);
  // read 255 bytes from the stream
  F.Read(Buf, SizeOf(Buf));
  // Buf contains the next 255 bytes starting from 0x0030 now
  ...
end;

Regards, Geo
0
wimhhfAuthor Commented:
Thanks!
0
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