INT64 in IDL

**zvenny** · January 27th, 2011, 09:03 AM

I have a COM library project and now would like to pass an INT64 argument in an interface method.
When compiling the IDL however I get ...

error MIDL2025 : syntax error : expecting a type specification near "INT64"

Any suggestion ?

**Igor Vartanov** · January 28th, 2011, 05:35 PM

It should be LONGLONG

**zvenny** · January 31st, 2011, 05:03 AM

Thx for the hint but when using LONGLONG I get

Code:

warning MIDL2039 : interface does not conform to [oleautomation] attribute

The code in IDL is

Code:

[id(5), helpstring("method ParamTest")] HRESULT ParamTest([in] LONGLONG n64Input, [out] int* pResult);

**Igor Vartanov** · January 31st, 2011, 09:40 AM

Tested the following:

Code:

#include "olectl.h"
import "oaidl.idl";
import "ocidl.idl";

[
    object,
    uuid(00000000-0000-0000-0000-000000000001),
    oleautomation,
    nonextensible,
    helpstring("ITest Interface"),
    pointer_default(unique)
]
interface ITest : IDispatch{
    [id(1), helpstring("method ParamTest")] HRESULT ParamTest([in] LONGLONG n64Input, [out] int* pResult);
};


[
    uuid(00000000-0000-0000-0000-000000000002),
    version(1.0),
    helpstring("Test 1.0 Type Library")
]
library TestLib
{
    importlib("stdole2.tlb");
    [
        uuid(00000000-0000-0000-0000-000000000003),
        helpstring("Test Class")
    ]
    coclass Test
    {
        [default] interface ITest;
    };
};

Built with max error/warning level. Got not a single warning of the kind:

Code:

Processing .\589.idl
Processing C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\oaidl.idl
Processing C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\objidl.idl
Processing C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\unknwn.idl
Processing C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\wtypes.idl
Processing C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\basetsd.h
Processing C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\guiddef.h
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\wtypes.idl(671) : warning MIDL2111 : identifier length exceeds 31 characters : STGC_DANGEROUSLYCOMMITMERELYTODISKCACHE
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\objidl.idl(2308) : warning MIDL2111 : identifier length exceeds 31 characters : FMTID_MediaFileSummaryInformation
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\objidl.idl(2499) : warning MIDL2111 : identifier length exceeds 31 characters : tagEOLE_AUTHENTICATION_CAPABILITIES
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\objidl.idl(2518) : warning MIDL2111 : identifier length exceeds 31 characters : EOLE_AUTHENTICATION_CAPABILITIES
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\objidl.idl(2616) : warning MIDL2111 : identifier length exceeds 31 characters : tagRPCOPT_SERVER_LOCALITY_VALUES
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\objidl.idl(2652) : warning MIDL2111 : identifier length exceeds 31 characters : COMGLB_EXCEPTION_DONOT_HANDLE_FATAL
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\objidl.idl(2653) : warning MIDL2111 : identifier length exceeds 31 characters : COMGLB_EXCEPTION_DONOT_HANDLE_FATAL
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\objidl.idl(2654) : warning MIDL2111 : identifier length exceeds 31 characters : COMGLB_EXCEPTION_DONOT_HANDLE_ANY
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\objidl.idl(2660) : warning MIDL2111 : identifier length exceeds 31 characters : COMGLB_RPC_THREADPOOL_SETTING_DEFAULT_POOL
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\objidl.idl(2661) : warning MIDL2111 : identifier length exceeds 31 characters : COMGLB_RPC_THREADPOOL_SETTING_PRIVATE_POOL
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\objidl.idl(3368) : warning MIDL2111 : identifier length exceeds 31 characters : APTTYPEQUALIFIER_NA_ON_IMPLICIT_MTA
Processing C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\ocidl.idl
Processing C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\oleidl.idl
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\oleidl.idl(329) : warning MIDL2111 : identifier length exceeds 31 characters : OLEMISC_RENDERINGISDEVICEINDEPENDENT
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\oleidl.idl(339) : warning MIDL2111 : identifier length exceeds 31 characters : OLEMISC_IGNOREACTIVATEWHENVISIBLE
Processing C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\servprov.idl
Processing C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl
Processing C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\msxml.idl
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(700) : warning MIDL2111 : identifier length exceeds 31 characters : BINDINFO_OPTIONS_USE_IE_ENCODING
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(704) : warning MIDL2111 : identifier length exceeds 31 characters : BINDINFO_OPTIONS_IGNOREMIMETEXTPLAIN
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(705) : warning MIDL2111 : identifier length exceeds 31 characters : BINDINFO_OPTIONS_USEBINDSTRINGCREDS
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(706) : warning MIDL2111 : identifier length exceeds 31 characters : BINDINFO_OPTIONS_IGNOREHTTPHTTPSREDIRECTS
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(707) : warning MIDL2111 : identifier length exceeds 31 characters : BINDINFO_OPTIONS_IGNORE_SSLERRORS_ONCE
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(712) : warning MIDL2111 : identifier length exceeds 31 characters : BINDINFO_OPTIONS_ALLOWCONNECTDATA
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(713) : warning MIDL2111 : identifier length exceeds 31 characters : BINDINFO_OPTIONS_DISABLEAUTOREDIRECTS
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(714) : warning MIDL2111 : identifier length exceeds 31 characters : BINDINFO_OPTIONS_SHDOCVW_NAVIGATE
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(726) : warning MIDL2111 : identifier length exceeds 31 characters : BSCF_INTERMEDIATEDATANOTIFICATION
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(742) : warning MIDL2111 : identifier length exceeds 31 characters : BINDSTATUS_BEGINDOWNLOADCOMPONENTS
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(744) : warning MIDL2111 : identifier length exceeds 31 characters : BINDSTATUS_ENDDOWNLOADCOMPONENTS
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(749) : warning MIDL2111 : identifier length exceeds 31 characters : BINDSTATUS_CACHEFILENAMEAVAILABLE
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(757) : warning MIDL2111 : identifier length exceeds 31 characters : BINDSTATUS_VERIFIEDMIMETYPEAVAILABLE
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(761) : warning MIDL2111 : identifier length exceeds 31 characters : BINDSTATUS_CONTENTDISPOSITIONATTACH
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(770) : warning MIDL2111 : identifier length exceeds 31 characters : BINDSTATUS_COMPACT_POLICY_RECEIVED
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(777) : warning MIDL2111 : identifier length exceeds 31 characters : BINDSTATUS_COOKIE_STATE_DOWNGRADE
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(780) : warning MIDL2111 : identifier length exceeds 31 characters : BINDSTATUS_SESSION_COOKIE_RECEIVED
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(781) : warning MIDL2111 : identifier length exceeds 31 characters : BINDSTATUS_PERSISTENT_COOKIE_RECEIVED
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(782) : warning MIDL2111 : identifier length exceeds 31 characters : BINDSTATUS_SESSION_COOKIES_ALLOWED
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(784) : warning MIDL2111 : identifier length exceeds 31 characters : BINDSTATUS_CONTENTDISPOSITIONFILENAME
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(785) : warning MIDL2111 : identifier length exceeds 31 characters : BINDSTATUS_MIMETEXTPLAINMISMATCH
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(789) : warning MIDL2111 : identifier length exceeds 31 characters : BINDSTATUS_SERVER_MIMETYPEAVAILABLE
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(790) : warning MIDL2111 : identifier length exceeds 31 characters : BINDSTATUS_SNIFFED_CLASSIDAVAILABLE
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(877) : warning MIDL2111 : identifier length exceeds 31 characters : BINDF2_DISABLEAUTOCOOKIEHANDLING
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(878) : warning MIDL2111 : identifier length exceeds 31 characters : BINDF2_READ_DATA_GREATER_THAN_4GB
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(879) : warning MIDL2111 : identifier length exceeds 31 characters : BINDF2_DISABLE_HTTP_REDIRECT_XSECURITYID
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(1174) : warning MIDL2111 : identifier length exceeds 31 characters : CIP_TRUST_VERIFICATION_COMPONENT_MISSING
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(1175) : warning MIDL2111 : identifier length exceeds 31 characters : CIP_EXE_SELF_REGISTERATION_TIMEOUT
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(2332) : warning MIDL2111 : identifier length exceeds 31 characters : LPIINTERNETPROTOCOLSINKStackable
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(2817) : warning MIDL2111 : identifier length exceeds 31 characters : FEATURE_HTTP_USERNAME_PASSWORD_DISABLE
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(2820) : warning MIDL2111 : identifier length exceeds 31 characters : FEATURE_GET_URL_DOM_FILEPATH_UNENCODED
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(2823) : warning MIDL2111 : identifier length exceeds 31 characters : FEATURE_DISABLE_NAVIGATION_SOUNDS
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(2824) : warning MIDL2111 : identifier length exceeds 31 characters : FEATURE_DISABLE_LEGACY_COMPRESSION
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(3068) : warning MIDL2111 : identifier length exceeds 31 characters : PUAF_NPL_USE_LOCKED_IF_RESTRICTED
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\urlmon.idl(3633) : warning MIDL2111 : identifier length exceeds 31 characters : ZAFLAGS_VERIFY_TEMPLATE_SETTINGS
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\ocidl.idl(379) : warning MIDL2111 : identifier length exceeds 31 characters : GUIDKIND_DEFAULT_SOURCE_DISP_IID
C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\ocidl.idl(1566) : warning MIDL2111 : identifier length exceeds 31 characters : POINTERINACTIVE_DEACTIVATEONLEAVE
Processing C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\oaidl.acf
Processing C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\include\ocidl.acf

**zvenny** · January 31st, 2011, 10:18 AM

Running your makefile gives me

Code:

Processing .\589.idl
Processing C:\Program Files\Microsoft Visual Studio\VC98\include\oaidl.idl
Processing C:\Program Files\Microsoft Visual Studio\VC98\include\objidl.idl
Processing C:\Program Files\Microsoft Visual Studio\VC98\include\unknwn.idl
Processing C:\Program Files\Microsoft Visual Studio\VC98\include\wtypes.idl
C:\Program Files\Microsoft Visual Studio\VC98\include\wtypes.idl(702) : warning MIDL2111 : identifier length exceeds 31 characters : STGC_DANGEROUSLYCOMMITMERELYTODISKCACHE
C:\Program Files\Microsoft Visual Studio\VC98\include\objidl.idl(23) : warning MIDL2007 : import ignored; file already imported : : wtypes.idl
C:\Program Files\Microsoft Visual Studio\VC98\include\objidl.idl(2843) : warning MIDL2111 : identifier length exceeds 31 characters : tagEOLE_AUTHENTICATION_CAPABILITIES
C:\Program Files\Microsoft Visual Studio\VC98\include\objidl.idl(2853) : warning MIDL2111 : identifier length exceeds 31 characters : EOLE_AUTHENTICATION_CAPABILITIES
Processing C:\Program Files\Microsoft Visual Studio\VC98\include\ocidl.idl
Processing C:\Program Files\Microsoft Visual Studio\VC98\include\oleidl.idl
C:\Program Files\Microsoft Visual Studio\VC98\include\oleidl.idl(18) : warning MIDL2007 : import ignored; file already imported : : objidl.idl
C:\Program Files\Microsoft Visual Studio\VC98\include\oleidl.idl(326) : warning MIDL2111 : identifier length exceeds 31 characters : OLEMISC_RENDERINGISDEVICEINDEPENDENT
C:\Program Files\Microsoft Visual Studio\VC98\include\oleidl.idl(336) : warning MIDL2111 : identifier length exceeds 31 characters : OLEMISC_IGNOREACTIVATEWHENVISIBLE
C:\Program Files\Microsoft Visual Studio\VC98\include\ocidl.idl(19) : warning MIDL2007 : import ignored; file already imported : : oaidl.idl
Processing C:\Program Files\Microsoft Visual Studio\VC98\include\servprov.idl
C:\Program Files\Microsoft Visual Studio\VC98\include\servprov.idl(35) : warning MIDL2007 : import ignored; file already imported : : objidl.idl
Processing C:\Program Files\Microsoft Visual Studio\VC98\include\urlmon.idl
C:\Program Files\Microsoft Visual Studio\VC98\include\urlmon.idl(33) : warning MIDL2007 : import ignored; file already imported : : objidl.idl
C:\Program Files\Microsoft Visual Studio\VC98\include\urlmon.idl(34) : warning MIDL2007 : import ignored; file already imported : : oleidl.idl
C:\Program Files\Microsoft Visual Studio\VC98\include\urlmon.idl(35) : warning MIDL2007 : import ignored; file already imported : : servprov.idl
Processing C:\Program Files\Microsoft Visual Studio\VC98\include\msxml.idl
C:\Program Files\Microsoft Visual Studio\VC98\include\msxml.idl(23) : warning MIDL2007 : import ignored; file already imported : : unknwn.idl
C:\Program Files\Microsoft Visual Studio\VC98\include\msxml.idl(24) : warning MIDL2007 : import ignored; file already imported : : wtypes.idl
C:\Program Files\Microsoft Visual Studio\VC98\include\msxml.idl(25) : warning MIDL2007 : import ignored; file already imported : : objidl.idl
C:\Program Files\Microsoft Visual Studio\VC98\include\msxml.idl(26) : warning MIDL2007 : import ignored; file already imported : : oaidl.idl
C:\Program Files\Microsoft Visual Studio\VC98\include\msxml.idl(47) : warning MIDL2007 : import ignored; file already imported : : oaidl.idl
C:\Program Files\Microsoft Visual Studio\VC98\include\urlmon.idl(533) : warning MIDL2111 : identifier length exceeds 31 characters : BSCF_INTERMEDIATEDATANOTIFICATION
C:\Program Files\Microsoft Visual Studio\VC98\include\urlmon.idl(548) : warning MIDL2111 : identifier length exceeds 31 characters : BINDSTATUS_BEGINDOWNLOADCOMPONENTS
C:\Program Files\Microsoft Visual Studio\VC98\include\urlmon.idl(550) : warning MIDL2111 : identifier length exceeds 31 characters : BINDSTATUS_ENDDOWNLOADCOMPONENTS
C:\Program Files\Microsoft Visual Studio\VC98\include\urlmon.idl(555) : warning MIDL2111 : identifier length exceeds 31 characters : BINDSTATUS_CACHEFILENAMEAVAILABLE
C:\Program Files\Microsoft Visual Studio\VC98\include\urlmon.idl(563) : warning MIDL2111 : identifier length exceeds 31 characters : BINDSTATUS_VERIFIEDMIMETYPEAVAILABLE
C:\Program Files\Microsoft Visual Studio\VC98\include\urlmon.idl(758) : warning MIDL2111 : identifier length exceeds 31 characters : CIP_TRUST_VERIFICATION_COMPONENT_MISSING
C:\Program Files\Microsoft Visual Studio\VC98\include\urlmon.idl(759) : warning MIDL2111 : identifier length exceeds 31 characters : CIP_EXE_SELF_REGISTERATION_TIMEOUT
C:\Program Files\Microsoft Visual Studio\VC98\include\ocidl.idl(375) : warning MIDL2111 : identifier length exceeds 31 characters : GUIDKIND_DEFAULT_SOURCE_DISP_IID
C:\Program Files\Microsoft Visual Studio\VC98\include\ocidl.idl(1465) : warning MIDL2111 : identifier length exceeds 31 characters : POINTERINACTIVE_DEACTIVATEONLEAVE
C:\Program Files\Microsoft Visual Studio\VC98\include\objidl.idl(3096) : warning MIDL2298 : [version] attribute is ignored on an [object] interface : [ Interface 'ISurrogate'  ]
C:\Program Files\Microsoft Visual Studio\VC98\include\oaidl.idl(749) : warning MIDL2209 : redundantly specified attribute; ignored : [in] [ Parameter 'rgszNames' of Procedure 'SetFuncAndParamNames' ( Interface 'ICreateTypeInfo' ) ]
C:\Program Files\Microsoft Visual Studio\VC98\include\oleidl.idl(739) : warning MIDL2209 : redundantly specified attribute; ignored : [string] [ Type 'LPCOLESTR' ( Parameter 'pszObjName' ) ]
.\589.idl(14) : warning MIDL2039 : interface does not conform to [oleautomation] attribute : [ Parameter 'n64Input' of Procedure 'ParamTest' ( Interface 'ITest' ) ]

Guess I'm missing a key point here !?!?

**Igor Vartanov** · January 31st, 2011, 11:13 AM

Maybe the key point is VS version?

A wild guess: did you ever apply any VS6 servicepack?

**zvenny** · February 1st, 2011, 02:56 AM

That's VS6 and if I remember well SP6 but can't find that in the about box

**VictorN** · February 1st, 2011, 04:05 AM

Originally Posted by zvenny

That's VS6 and if I remember well SP6 but can't find that in the about box

VS6 "About box" does not contain any SP info.
Have a look at the registry key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\VisualStudio\6.0\ServicePacks

And did you install some SDK for VS6 (the last one was from Feb. 2003)?

**zvenny** · February 1st, 2011, 04:23 AM

Thx for the registry hint ! It tells me I indeed installed SP6.

SDKs for VS6 ? None I think ... can I also check that in registry ?

The only SDKs I have installed are 2.0 for .Net and 6.0A for Windows
but those are not relevant for this problem I presume.

**VictorN** · February 1st, 2011, 04:29 AM

Originally Posted by zvenny

...
SDKs for VS6 ? None I think ... can I also check that in registry ?

Yes.
In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MicrosoftSDK

**zvenny** · February 1st, 2011, 04:34 AM

Exactly the 2 SDKs that I mentioned.

Am I missing a crucial SDK for getting my IDL to compile correctly ?

**Igor Vartanov** · February 1st, 2011, 11:00 AM

Another key point: warning is not an error.

I've just checked it with VS6, it generates .tlb and proxy code alright (disregarding the warning). And with all subsequent VS versions it compiles just fine.

**zvenny** · February 3rd, 2011, 03:02 AM

Despite the warning, I can now indeed pass 64bit values between COM dll and client app

Just 1 more question about the oleautomation attribute for the interface.
By just saying the interface is automation compatible, it doesn't actually make it so, right ?

Thx all

**Igor Vartanov** · February 4th, 2011, 04:51 AM

oleautomation attribute

And yes, it's just an indicator. BTW, to fully comply with oleautomation you'd better go with VARIANT rather than LONGLONG.

**zvenny** · February 4th, 2011, 05:11 AM

Been looking into that, but couldn't quite figure out how to use VARIANTs for 64bit

Will investigate this suggestion further !

Thread: INT64 in IDL

Thread Tools

Display

INT64 in IDL

Re: INT64 in IDL

Re: INT64 in IDL

Re: INT64 in IDL

Re: INT64 in IDL

Re: INT64 in IDL

Re: INT64 in IDL

Re: INT64 in IDL

Re: INT64 in IDL

Re: INT64 in IDL

Re: INT64 in IDL

Re: INT64 in IDL

Re: INT64 in IDL

Re: INT64 in IDL

Re: INT64 in IDL

Posting Permissions