Calling a DLL in MS-Excel

[Guest]

I have the following instructions to call a DLL from Visual Basic. I don't
know how to do this and wondered if someone could assist me or explain to me
in layman's terms how to accomplish it.

Thanks,

Jim

This is the calling routine from Visual Basi
‘-------------------------------------------------------------------------------------
Option Explicit
Private Sub Command1_Click()
'
trsm = InputBox("enter legal location")
meridian = InputBox("OPTIONAL/enter meridian")
state = InputBox("OPTIONAL/enter state XX")
Call trsm2ll(trsm, Len(trsm), meridian, Len(meridian), state, Len(state),
lat, lng, lerror)
MsgBox "latitude=" & lat & " longitude=" & lng & " error=" & lerror & "
trsm=" & trsm & " state=" & state & " meridian=" & meridian
End Su
‘---------------------------------------------------------------------------------------------------
And this is the Module declaration.
‘--------------------------------------------------------------------------------------------
Option Explicit
Public lerror As Integer
Public lat As Single
Public lng As Single
Public state As String * 2
Public meridian As String * 2
Public trsm As String * 16
Declare Sub trsm2ll Lib _
"TRSM2LL.DLL" _
(ByVal trsm As String, ByVal l1 As Long, _
ByVal meridian As String, ByVal l2 As Long, _
ByVal state As String, ByVal l3 As Long, _
lat As Single, _
lng As Single, _
lerror As Integer)

The following Visual Fortran DLLs must be present on you computer:
DFORRT.DLL
DFORMD.DLL
MSVCRT.DLL

 

[Chris]

Either the DLLs aren't present on your system and they need to be or they
need to be registered, ex.

regsvr32 DFORRT.DLL