We don't recommend calling shutdownHaskell() from DllMain(). Some information
here:
http://haskell.org/haskellwiki/GHC/Using_the_FFI#Debugging_Haskell_DLLs
It should be safe to call shutdownHaskell() (aka hs_exit()) *before* unloading a
DLL, and before exiting the program.
Cheers,
Simon
Lennart Augustsson wrote:
There is a number of problems, I'm not sure which one you are encountering.
Here are some that I remember:
The sample C code doesn't shut down the ghc runtime properly when the
DLL is unloaded. This causes a timer interrupt to jump into the void.
This is easily fixed with a couple of more lines of C.
The ghc runtime installs handlers for various things that it shouldn't
touch when used as a DLL.
-- Lennart
On 6/19/07, *Lewis-Sandy, Darrell * <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
I am new to using the Haskell FFI, and have been trying to implement
the example in section 11.6 of the GHC user's guide.
I have finally gotten to the point where my dll compiles (there is a
missing space in the mainDll.h code at line 4:12) using GHC 6.6.1,
and used the declare statement to expose the "adder" function in
Excel VBA. My VBA Code is given below:
Private Declare Function adder Lib " adder.dll" Alias "[EMAIL PROTECTED]"
(ByVal x As Integer, ByVal y As Integer) As Integer
Private Sub test()
Debug.Print adder(1, 2)
End Sub
*My problem is this:*
The function works fine (the immediate window displays 3), but when
I terminate Excel, I get an application error ("The instruction at …
referenced memory at … . The memory could not be read."). Does
anyone else have any experience calling Haskell from VBA that might
be relevant?
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