What means 'Access violation'?

pinje · ‎03-14-2006

Hi all,

I am getting an error "0xC0000005: Access violation" when calling a function from a VB.net COM DLL...

But what does it mean?

Thanks for your help.

Steven_L_Intel1 · ‎03-14-2006

Here is a general explanation of Access Violation.

pinje · ‎03-14-2006

Hi Steve,

Many thanks for your help. It is a bit more clear for me and it looks like i have something wrong with my pointer to my VB.NET DLL.

What i don't understand, is that i am using these 3 functions, but the value returned by 'app' is not 0 but 15925296, should i assume that it points correctly to the sub in my DLL?:

CALL COMINITIALIZE(hRes)

CALL COMCREATEOBJECT ("VB_COM_DLL.ComClsInterface2d", app, hRes)

CALL $ComClsInterface2d_MsgBoxShow(app)

Also, i had a look on the V9Samples.zip especially on MixedLanguage, but all examples described NET exe calling Fortran DLL.

Unfortunately, i am trying to do the other way arround, that is to call a DLL made in .net from an exe made with fortran... Do you know where to find such an example?