Thread
:
Passing arguments from VBA to DLL
View Single Post
#
8
Posted to microsoft.public.excel.programming
[email protected]
external usenet poster
Posts: 6
Passing arguments from VBA to DLL
schrieb:
I just took the first few steps in writing a little DLL that should
be called from Excel/VBA, and I stumbled upon some wierd behaviour.
The function in my DLL is declared as
int __stdcall foo( const char *t );
and is used in VBA via
Declare Function foo Lib "C:\foo\foo.dll" (ByVal t As String) As Long
I noticed that foo didn't work internally as I expected and added
writing *t to a file on each call of foo as a debugging measure.
According to this output, only the first character of String t seems
to be passed to foo when called directly from Excel (putting
=foo("xyz") in a cell).
Let me answer my own post:
Excel passes the string as some kind of wide-character. Using
const wchar_t *t in my function works perfectly.
Regards,
Matthias
Reply With Quote
[email protected]
View Public Profile
Find all posts by
[email protected]