Calling C dlls in VB?

I noticed some users who run a program that tries to call a C dll (compiled with vs2005) in VB (6.0) they get a mysterious "file not found error".





Can anyone try to help me pinpoint what would cause such an error?

Calling C dlls in VB?
Option Explicit





'Declare the c++ dll. In the real world you will probably do this


'in a module. Note the path to your dll might be different than mine.


'Also note that the values are being passed ByVal


Private Declare Function MyFunction Lib _


"c:\pub\sampleproj\debug\SampleProj.dll" (ByVal szString As String, _


ByVal nFirstNum As Long, ByVal nSecondNum As Long) As Long





Private Sub Form_Load()


Dim lngResults As Long


'call the function. It should display a messagebox with the string


'which will originate from the dll, and then another messagebox


'from vb with the total of our two longs


lngResults = MyFunction("This is a test.", 5, 4)


MsgBox "The total is " %26amp; CStr(lngResults)


Unload Me


End Sub