OpenEuphoria

Re: Jacques's Critical Error Handler

• Posted by Jacques Deschenes <desja at QUEBECTEL.COM> May 20, 1997
• 1173 views

At 09:50 97-05-21 +0900, you wrote:
>1) It seems that a problem or bug exist in detecting critical error
>for 3.25" floppy disk. When i changed into my b: drive (3.25") from
>the Choose-File routine, the b: drive continued checking disks and
>did not stop... making endless tu tu tu tu tu ... sound.

   I couldn't reproduce this bug on my computer but I have only one floppy.

>2) I could not find CheckIo() call in the ChooseFile.e,  but it appears
>that the ChooseFile routine can manage ctitical errors....
>Could you (Mr. Jacques Deschene) explain on it?

   I didn't use it in filelist.e because if there is no disk in a drive
the list will not change, stay to the previous path or a no files message
will appear
if there no previous path i.e first call of FileList.e
   filelist.e simply ignore the error code.  I Admit this is loosy
programming I will
change it.

>3) I found a routine written in BASIC for getting drive lists exist,
>and convert it into Euphoria as follows. This routine seems to be perfect!.
>It detect ALL the drives in my machine including floppy, hard, cdrom,
>Syquest, and even logical drive.

  This piece of code is simple and work perfectly.  But what append if the pc is
connected to a network?  Will it detect network drives? If so is it possible
for a
euphoria program to access network drives without special programming?
(I'm ignorant of network)



>Jacques, Your critical error handler can be applied to this routine
>without fail? Your ChooseFile.e only detects drives upto D:.

  I don't see any use of int24.e with this code. because this code produce
no error at
all it only  query the dos to know whish drives are installed, no access is
made to the
drive itselve  an it avoid any critical error.


Jacques Deschenes
Baie-Comeau, Quebec
Canada
desja at quebectel.com