INT64 in IDL

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January 27th, 2011, 09:03 AM
zvenny

INT64 in IDL

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 ...

Quote:

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

Any suggestion ?
January 28th, 2011, 05:35 PM
Igor Vartanov

Re: INT64 in IDL

It should be LONGLONG
January 31st, 2011, 05:03 AM
zvenny

Re: INT64 in IDL

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);
January 31st, 2011, 09:40 AM
Igor Vartanov

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Re: INT64 in IDL

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
January 31st, 2011, 10:18 AM
zvenny

Re: INT64 in IDL

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 !?!?
January 31st, 2011, 11:13 AM
Igor Vartanov

Re: INT64 in IDL

Maybe the key point is VS version? :)
A wild guess: did you ever apply any VS6 servicepack?
February 1st, 2011, 02:56 AM
zvenny

Re: INT64 in IDL

That's VS6 and if I remember well SP6 but can't find that in the about box :ehh:
February 1st, 2011, 04:05 AM
VictorN

Re: INT64 in IDL

Quote:

Originally Posted by zvenny

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

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)?
February 1st, 2011, 04:23 AM
zvenny

Re: INT64 in IDL

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.
February 1st, 2011, 04:29 AM
VictorN

Re: INT64 in IDL

Quote:

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
February 1st, 2011, 04:34 AM
zvenny

Re: INT64 in IDL

Exactly the 2 SDKs that I mentioned.

Am I missing a crucial SDK for getting my IDL to compile correctly ?
February 1st, 2011, 11:00 AM
Igor Vartanov

Re: INT64 in IDL

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. :)
February 3rd, 2011, 03:02 AM
zvenny

Re: INT64 in IDL

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 :thumb:
February 4th, 2011, 04:51 AM
Igor Vartanov

Re: INT64 in IDL

oleautomation attribute

And yes, it's just an indicator. BTW, to fully comply with oleautomation you'd better go with VARIANT rather than LONGLONG.
February 4th, 2011, 05:11 AM
zvenny

Re: INT64 in IDL

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

Will investigate this suggestion further !

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