calling a dll

I_Need_help2June 28, 2008 at 4:16 PM#edited June 28, 2008 at 4:40 PM

Hi
Iâ€™m new to NSIS and getting it to do things slowly!

The thing I canâ€™t get my head around is calling an external dll!

Location is installed on my test system and will be preexisting on all system the installer is run on.

In VB.net i would do the following:

Dim Loc As LOCATION.Dirs

Loc = New LOCATION.Dirs
myfolder = Loc.PROG

and after this myfolder contains the path returned to myfolder.

Iâ€™m trying

System::Call "LOCATION:😁irs(t "PROG") t .r1"
MessageBox MB_OK|MB_ICONSTOP "Prog $1."

The above just returns a number not the path.

Afrow UKJune 28, 2008 at 4:43 PM#

Is the dll .NET? If so then you have to write a non .NET wrapper to call it. This could be a dll or a command-line executable.

Stu

I_Need_help2June 28, 2008 at 5:07 PM#

No its c++ and I was calling via interop as it COM, does this help?