I searched for a compiler switch I might be missing but with no luck so I
thought I woud post.  I am using the latest version.
When I try to compile the following:

#include <afxctl.h>
void func()
{
int i = 0;
}


I get the following errors:
Error: C:\DM\BIN\..\include\win32\objidl.h(358): forward referenced class
'IUnknown' cannot be a base class

Error: C:\DM\BIN\..\include\win32\objidl.h(615): forward referenced class 'IUnknown' cannot be a base class

Error: C:\DM\BIN\..\include\win32\objidl.h(821): forward referenced class 'IUnknown' cannot be a base class

Error: C:\DM\BIN\..\include\win32\objidl.h(1183): forward referenced class 'IUnknown' cannot be a base class

Thanks!
Andy C.

I just tried it and it works. Perhaps your INCLUDE environment variable isn't set right?

"Andy C" <Andy_member@pathlink.com> wrote in message news:bu6b06$2dtm$1@digitaldaemon.com...
> I searched for a compiler switch I might be missing but with no luck so I
> thought I woud post.  I am using the latest version.
> When I try to compile the following:
>
> #include <afxctl.h>
> void func()
> {
> int i = 0;
> }
>
>
> I get the following errors:
> Error: C:\DM\BIN\..\include\win32\objidl.h(358): forward referenced class
> 'IUnknown' cannot be a base class
>
> Error: C:\DM\BIN\..\include\win32\objidl.h(615): forward referenced class 'IUnknown' cannot be a base class
>
> Error: C:\DM\BIN\..\include\win32\objidl.h(821): forward referenced class 'IUnknown' cannot be a base class
>
> Error: C:\DM\BIN\..\include\win32\objidl.h(1183): forward referenced class 'IUnknown' cannot be a base class
>
> Thanks!
> Andy C.
>
>

Walter,
This is what I am using:
c:\dm\bin\dmc cctest.cpp -cpp -c -Aa -HO -D_DEBUG=1 -D_MBCS=1 -D_X86_=1 -D_MT=1
-IC:\dm\mfc\INCLUDE -IC:\dm\INCLUDE

CCTest.CPP is:
// cctest.cpp
#include <afxctl.h>
void func()
{
int i = 0;
}

Thanks - Andy



In article <bu93m4$12cv$3@digitaldaemon.com>, Walter says...
>
>I just tried it and it works. Perhaps your INCLUDE environment variable isn't set right?
>
>"Andy C" <Andy_member@pathlink.com> wrote in message news:bu6b06$2dtm$1@digitaldaemon.com...
>> I searched for a compiler switch I might be missing but with no luck so I
>> thought I woud post.  I am using the latest version.
>> When I try to compile the following:
>>
>> #include <afxctl.h>
>> void func()
>> {
>> int i = 0;
>> }
>>
>>
>> I get the following errors:
>> Error: C:\DM\BIN\..\include\win32\objidl.h(358): forward referenced class
>> 'IUnknown' cannot be a base class
>>
>> Error: C:\DM\BIN\..\include\win32\objidl.h(615): forward referenced class 'IUnknown' cannot be a base class
>>
>> Error: C:\DM\BIN\..\include\win32\objidl.h(821): forward referenced class 'IUnknown' cannot be a base class
>>
>> Error: C:\DM\BIN\..\include\win32\objidl.h(1183): forward referenced class 'IUnknown' cannot be a base class
>>
>> Thanks!
>> Andy C.
>>
>>
>
>

Solved:  -Aa- and never using the -HO switch allows a compile in both Debug and Release! (IDE does not set -Aa- correctly so I stuck it in sc.ini).

Andy C

In article <bu9jua$1t72$1@digitaldaemon.com>, Andy C says...
>
>Walter,
>This is what I am using:
>c:\dm\bin\dmc cctest.cpp -cpp -c -Aa -HO -D_DEBUG=1 -D_MBCS=1 -D_X86_=1 -D_MT=1
>-IC:\dm\mfc\INCLUDE -IC:\dm\INCLUDE
>
>CCTest.CPP is:
>// cctest.cpp
>#include <afxctl.h>
>void func()
>{
>int i = 0;
>}
>
>Thanks - Andy
>
>
>
>In article <bu93m4$12cv$3@digitaldaemon.com>, Walter says...
>>
>>I just tried it and it works. Perhaps your INCLUDE environment variable isn't set right?
>>
>>"Andy C" <Andy_member@pathlink.com> wrote in message news:bu6b06$2dtm$1@digitaldaemon.com...
>>> I searched for a compiler switch I might be missing but with no luck so I
>>> thought I woud post.  I am using the latest version.
>>> When I try to compile the following:
>>>
>>> #include <afxctl.h>
>>> void func()
>>> {
>>> int i = 0;
>>> }
>>>
>>>
>>> I get the following errors:
>>> Error: C:\DM\BIN\..\include\win32\objidl.h(358): forward referenced class
>>> 'IUnknown' cannot be a base class
>>>
>>> Error: C:\DM\BIN\..\include\win32\objidl.h(615): forward referenced class 'IUnknown' cannot be a base class
>>>
>>> Error: C:\DM\BIN\..\include\win32\objidl.h(821): forward referenced class 'IUnknown' cannot be a base class
>>>
>>> Error: C:\DM\BIN\..\include\win32\objidl.h(1183): forward referenced class 'IUnknown' cannot be a base class
>>>
>>> Thanks!
>>> Andy C.
>>>
>>>
>>
>>
>
>