[RESOLVED] Digging into COM from Class1 inside a standard VB6 EXE project.

[LaVolpe]

Dear Lavolpe,
Thankyou very much.
ByVal before the first parameter ObjPtr(pClass1Obj) worked perfect.
Can you give me simple code of how to pass one or more parameters for any class function as input say for calculation like addition and returning the value using the above Dispcallfunc api declararation which I used from Trick's multithreading module.

regards.
JSVenu

I wrote a wrapper awhile back. You can look at it
http://www.vbforums.com/showthread.p...all-DLL-Calls)

For COM calls, important to pass the correct vartype
1. Strings: Pass StrPtr
2. Objects: Pass VarPtr(Object) when official documentation is a far pointer **pUnk
3. Objects: Pass ObjPtr(Object) when official documentation is ByRef near pointer *pObject
4. Numeric variables. Pass correct vartype, using & ! # @ suffix or conversion functions CLng(), etc
5. Numeric variables ByRef: Pass VarPtr(variable)
6. Arrays: Pass VarPtr(array(lbound))