Delete text file

Hi orna,

in Uniface 8+ there is the command "lfiledelete" etc.

In Version 6, I used a BAT file to rename/copy/delete files (called via a link, so we could hide the window). 

Success, Uli

As long as you're on Uniface 7, there is no lfiledelete, that's from version 8 and on, like Uli already mentioned.

Your solution should work; I use it too on my old 7.2.06 environment (migrating to 9 at the moment).

First of all: Please check the paths to the dll in the usys.ini. These will vary per (Windows) platform. My usys.ini looks like this (for W2K PC's):

[userdlls]
demandload=c:\winnt\system32\advapi32.dll,c:\winnt\system32\kernel32.dll,c:\winnt\system32\shell32.dll

The "DeleteFile" or  "DeleteFileA" is a kernel32 function.

My code looks like this:

operation DeleteFile

params
   string    ps_FileName   :IN
endparams

activate "kernel32".DeleteFile(ps_FileName)

return ($status)

end ; DeleteFile

And my signature "kernel32" has the operation "deletefile" with one in-parameter "filename", type string, interface char *, length 256. (Windows 2000 limits paths to 260 characters total length.)

Hope this helps!

Regards, Arjen

Thanks Uli & Arjen

The problem with API is that we have users with Windows 2000 & XP
and the kernel32.dll is not the same, and different .ini file is not an option.
So, with bat file it works just fine.

Hi,

in UF 7  we used for such basic file operations like copy, delete, append, ..  an own dll written in c.
This dll was linked with the 3GL stuff deliverd by uniface (h / lib)  and the name of the dll was placed in the .ini file in section [userdlls].

Advantage:
The functions became a "part" of uniface (activated "silent" by the perform command).

Disadvantage:
You need a C-compiler

But perhaps this could be an alternative solution of calling external bat files for you.

Kind regards,
Bertram