Issue in porting ATL/COM dll to x64.

prxy 61 Reputation points
2020-12-23T09:00:50.727+00:00

Hi,

I'm trying to port ATL\COM dll to native X64. But compilation fails with below error for x64 platform. It works fine on x86.
C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\VC\Tools\MSVC\14.14.26428\atlmfc\include\atlcom.h(3449): error C2259: 'ATL::CComContainedObject<contained>': cannot instantiate abstract class
1> with
1> [
1> contained=CXYZ
1> ] (compiling source file CXYZ.cpp)
1>C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\VC\Tools\MSVC\14.14.26428\atlmfc\include\atlcom.h(3449): note: due to following members: (compiling source file CXYZ.cpp)
1>C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\VC\Tools\MSVC\14.14.26428\atlmfc\include\atlcom.h(3449): note: 'HRESULT IXYZ::get_Window(long *)': is abstract (compiling source file CXYZ.cpp)
1>D:{path}\x64\Release\MIDL\CXYZ.h(122): note: see declaration of 'IXYZ::get_Window' (compiling source file CXYZ.cpp)
1>C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\VC\Tools\MSVC\14.14.26428\atlmfc\include\atlcom.h(1998): note: see reference to class template instantiation 'ATL::CComAggObject<T>' being compiled.

I know the function get_Window is defined in class CStockPropImpl but somehow compiler is not able find it definition for x64.
Below is some more information:
In .idl files, I've below entry for get_Window function

interface IXYZ : IDispatch
{
.
.
.
[propget, id(DISPID_HWND)]
 HRESULT Window([out, retval]long* phwnd);
.
.
.
}

MIDL is generating .h file correctly. Below is the entry for method get_Window

virtual /* [id][propget] */ HRESULT STDMETHODCALLTYPE get_Window( 
            /* [retval][out] */ long *phwnd) = 0;

and below is implementation of IXYZ

class ATL_NO_VTABLE CXYZ : 
 public CComObjectRootEx<CComSingleThreadModel>,
 public CComCoClass<CXYZ, &CLSID_XYZ>,
 public CComControl<CXYZ>,
 public CStockPropImpl<CXYZ, IXYZ, &IID_IXYZ, &LIBID_XYZLib>
 .
 .
 .

I suspect the issue is beacuse of LONG_PTR size on x64 and x86 but not sure.

Any idea what could be the issue ?
Help appreciated.

Thanks in advance.

Windows 10
Windows 10
A Microsoft operating system that runs on personal computers and tablets.
10,705 questions
C++
C++
A high-level, general-purpose programming language, created as an extension of the C programming language, that has object-oriented, generic, and functional features in addition to facilities for low-level memory manipulation.
3,545 questions
Accepted answer
  1. RLWA32 40,851 Reputation points
    2020-12-23T13:05:36.877+00:00

    IDL file generated by ATL wizards. All I did was add the Test method. 

    // TestIDL.idl : IDL source for TestIDL  
//  
  
// This file will be processed by the MIDL tool to  
// produce the type library (TestIDL.tlb) and marshalling code.  
  
import "oaidl.idl";  
import "ocidl.idl";  
  
[  
	object,  
	uuid(58b7154c-9a1f-42ae-9df3-a137ffa37420),  
	dual,  
	nonextensible,  
	pointer_default(unique)  
]  
interface ITest : IDispatch  
{  
	[id(1)] HRESULT Test([in] LONG_PTR x, [out, retval] LONG_PTR *p);  
};  
[  
	uuid(479c8a97-9e62-45c1-915d-9472dcfa2e06),  
	version(1.0),  
]  
library TestIDLLib  
{  
	importlib("stdole2.tlb");  
	[  
		uuid(e692375c-f763-4ea2-beb1-3667da07393f)  
	]  
	coclass Test  
	{  
		[default] interface ITest;  
	};  
};  
  
import "shobjidl.idl";

    Header from 32-bit MIDL compile - 

    /* this ALWAYS GENERATED file contains the definitions for the interfaces */  
  
  
 /* File created by MIDL compiler version 8.01.0622 */  
/* at Mon Jan 18 22:14:07 2038  
 */  
/* Compiler settings for TestIDL.idl:  
    Oicf, W1, Zp8, env=Win32 (32b run), target_arch=X86 8.01.0622   
    protocol : dce , ms_ext, c_ext, robust  
    error checks: allocation ref bounds_check enum stub_data   
    VC __declspec() decoration level:   
         __declspec(uuid()), __declspec(selectany), __declspec(novtable)  
         DECLSPEC_UUID(), MIDL_INTERFACE()  
*/  
/* @@MIDL_FILE_HEADING(  ) */  
  
  
  
/* verify that the <rpcndr.h> version is high enough to compile this file*/  
#ifndef __REQUIRED_RPCNDR_H_VERSION__  
#define __REQUIRED_RPCNDR_H_VERSION__ 500  
#endif  
  
#include "rpc.h"  
#include "rpcndr.h"  
  
#ifndef __RPCNDR_H_VERSION__  
#error this stub requires an updated version of <rpcndr.h>  
#endif /* __RPCNDR_H_VERSION__ */  
  
#ifndef COM_NO_WINDOWS_H  
#include "windows.h"  
#include "ole2.h"  
#endif /*COM_NO_WINDOWS_H*/  
  
#ifndef __TestIDL_i_h__  
#define __TestIDL_i_h__  
  
#if defined(_MSC_VER) && (_MSC_VER >= 1020)  
#pragma once  
#endif  
  
/* Forward Declarations */   
  
#ifndef __ITest_FWD_DEFINED__  
#define __ITest_FWD_DEFINED__  
typedef interface ITest ITest;  
  
#endif 	/* __ITest_FWD_DEFINED__ */  
  
  
#ifndef __Test_FWD_DEFINED__  
#define __Test_FWD_DEFINED__  
  
#ifdef __cplusplus  
typedef class Test Test;  
#else  
typedef struct Test Test;  
#endif /* __cplusplus */  
  
#endif 	/* __Test_FWD_DEFINED__ */  
  
  
/* header files for imported files */  
#include "oaidl.h"  
#include "ocidl.h"  
#include "shobjidl.h"  
  
#ifdef __cplusplus  
extern "C"{  
#endif   
  
  
#ifndef __ITest_INTERFACE_DEFINED__  
#define __ITest_INTERFACE_DEFINED__  
  
/* interface ITest */  
/* [unique][nonextensible][dual][uuid][object] */   
  
  
EXTERN_C const IID IID_ITest;  
  
#if defined(__cplusplus) && !defined(CINTERFACE)  
      
    MIDL_INTERFACE("58b7154c-9a1f-42ae-9df3-a137ffa37420")  
    ITest : public IDispatch  
    {  
    public:  
        virtual /* [id] */ HRESULT STDMETHODCALLTYPE Test(   
            /* [in] */ LONG_PTR x,  
            /* [retval][out] */ LONG_PTR *p) = 0;  
          
    };  
      
      
#else 	/* C style interface */  
  
    typedef struct ITestVtbl  
    {  
        BEGIN_INTERFACE  
          
        HRESULT ( STDMETHODCALLTYPE *QueryInterface )(   
            ITest * This,  
            /* [in] */ REFIID riid,  
            /* [annotation][iid_is][out] */   
            _COM_Outptr_  void **ppvObject);  
          
        ULONG ( STDMETHODCALLTYPE *AddRef )(   
            ITest * This);  
          
        ULONG ( STDMETHODCALLTYPE *Release )(   
            ITest * This);  
          
        HRESULT ( STDMETHODCALLTYPE *GetTypeInfoCount )(   
            ITest * This,  
            /* [out] */ UINT *pctinfo);  
          
        HRESULT ( STDMETHODCALLTYPE *GetTypeInfo )(   
            ITest * This,  
            /* [in] */ UINT iTInfo,  
            /* [in] */ LCID lcid,  
            /* [out] */ ITypeInfo **ppTInfo);  
          
        HRESULT ( STDMETHODCALLTYPE *GetIDsOfNames )(   
            ITest * This,  
            /* [in] */ REFIID riid,  
            /* [size_is][in] */ LPOLESTR *rgszNames,  
            /* [range][in] */ UINT cNames,  
            /* [in] */ LCID lcid,  
            /* [size_is][out] */ DISPID *rgDispId);  
          
        /* [local] */ HRESULT ( STDMETHODCALLTYPE *Invoke )(   
            ITest * This,  
            /* [annotation][in] */   
            _In_  DISPID dispIdMember,  
            /* [annotation][in] */   
            _In_  REFIID riid,  
            /* [annotation][in] */   
            _In_  LCID lcid,  
            /* [annotation][in] */   
            _In_  WORD wFlags,  
            /* [annotation][out][in] */   
            _In_  DISPPARAMS *pDispParams,  
            /* [annotation][out] */   
            _Out_opt_  VARIANT *pVarResult,  
            /* [annotation][out] */   
            _Out_opt_  EXCEPINFO *pExcepInfo,  
            /* [annotation][out] */   
            _Out_opt_  UINT *puArgErr);  
          
        /* [id] */ HRESULT ( STDMETHODCALLTYPE *Test )(   
            ITest * This,  
            /* [in] */ LONG_PTR x,  
            /* [retval][out] */ LONG_PTR *p);  
          
        END_INTERFACE  
    } ITestVtbl;  
  
    interface ITest  
    {  
        CONST_VTBL struct ITestVtbl *lpVtbl;  
    };  
  
      
  
#ifdef COBJMACROS  
  
  
#define ITest_QueryInterface(This,riid,ppvObject)	\  
    ( (This)->lpVtbl -> QueryInterface(This,riid,ppvObject) )   
  
#define ITest_AddRef(This)	\  
    ( (This)->lpVtbl -> AddRef(This) )   
  
#define ITest_Release(This)	\  
    ( (This)->lpVtbl -> Release(This) )   
  
  
#define ITest_GetTypeInfoCount(This,pctinfo)	\  
    ( (This)->lpVtbl -> GetTypeInfoCount(This,pctinfo) )   
  
#define ITest_GetTypeInfo(This,iTInfo,lcid,ppTInfo)	\  
    ( (This)->lpVtbl -> GetTypeInfo(This,iTInfo,lcid,ppTInfo) )   
  
#define ITest_GetIDsOfNames(This,riid,rgszNames,cNames,lcid,rgDispId)	\  
    ( (This)->lpVtbl -> GetIDsOfNames(This,riid,rgszNames,cNames,lcid,rgDispId) )   
  
#define ITest_Invoke(This,dispIdMember,riid,lcid,wFlags,pDispParams,pVarResult,pExcepInfo,puArgErr)	\  
    ( (This)->lpVtbl -> Invoke(This,dispIdMember,riid,lcid,wFlags,pDispParams,pVarResult,pExcepInfo,puArgErr) )   
  
  
#define ITest_Test(This,x,p)	\  
    ( (This)->lpVtbl -> Test(This,x,p) )   
  
#endif /* COBJMACROS */  
  
  
#endif 	/* C style interface */  
  
  
  
  
#endif 	/* __ITest_INTERFACE_DEFINED__ */  
  
  
  
#ifndef __TestIDLLib_LIBRARY_DEFINED__  
#define __TestIDLLib_LIBRARY_DEFINED__  
  
/* library TestIDLLib */  
/* [version][uuid] */   
  
  
EXTERN_C const IID LIBID_TestIDLLib;  
  
EXTERN_C const CLSID CLSID_Test;  
  
#ifdef __cplusplus  
  
class DECLSPEC_UUID("e692375c-f763-4ea2-beb1-3667da07393f")  
Test;  
#endif  
#endif /* __TestIDLLib_LIBRARY_DEFINED__ */  
  
/* Additional Prototypes for ALL interfaces */  
  
/* end of Additional Prototypes */  
  
#ifdef __cplusplus  
}  
#endif  
  
#endif

    Header form 64-bit MIDL compile - 

    /* this ALWAYS GENERATED file contains the definitions for the interfaces */  
  
  
 /* File created by MIDL compiler version 8.01.0622 */  
/* at Mon Jan 18 22:14:07 2038  
 */  
/* Compiler settings for TestIDL.idl:  
    Oicf, W1, Zp8, env=Win64 (32b run), target_arch=AMD64 8.01.0622   
    protocol : all , ms_ext, c_ext, robust  
    error checks: allocation ref bounds_check enum stub_data   
    VC __declspec() decoration level:   
         __declspec(uuid()), __declspec(selectany), __declspec(novtable)  
         DECLSPEC_UUID(), MIDL_INTERFACE()  
*/  
/* @@MIDL_FILE_HEADING(  ) */  
  
  
  
/* verify that the <rpcndr.h> version is high enough to compile this file*/  
#ifndef __REQUIRED_RPCNDR_H_VERSION__  
#define __REQUIRED_RPCNDR_H_VERSION__ 500  
#endif  
  
#include "rpc.h"  
#include "rpcndr.h"  
  
#ifndef __RPCNDR_H_VERSION__  
#error this stub requires an updated version of <rpcndr.h>  
#endif /* __RPCNDR_H_VERSION__ */  
  
#ifndef COM_NO_WINDOWS_H  
#include "windows.h"  
#include "ole2.h"  
#endif /*COM_NO_WINDOWS_H*/  
  
#ifndef __TestIDL_i_h__  
#define __TestIDL_i_h__  
  
#if defined(_MSC_VER) && (_MSC_VER >= 1020)  
#pragma once  
#endif  
  
/* Forward Declarations */   
  
#ifndef __ITest_FWD_DEFINED__  
#define __ITest_FWD_DEFINED__  
typedef interface ITest ITest;  
  
#endif 	/* __ITest_FWD_DEFINED__ */  
  
  
#ifndef __Test_FWD_DEFINED__  
#define __Test_FWD_DEFINED__  
  
#ifdef __cplusplus  
typedef class Test Test;  
#else  
typedef struct Test Test;  
#endif /* __cplusplus */  
  
#endif 	/* __Test_FWD_DEFINED__ */  
  
  
/* header files for imported files */  
#include "oaidl.h"  
#include "ocidl.h"  
#include "shobjidl.h"  
  
#ifdef __cplusplus  
extern "C"{  
#endif   
  
  
#ifndef __ITest_INTERFACE_DEFINED__  
#define __ITest_INTERFACE_DEFINED__  
  
/* interface ITest */  
/* [unique][nonextensible][dual][uuid][object] */   
  
  
EXTERN_C const IID IID_ITest;  
  
#if defined(__cplusplus) && !defined(CINTERFACE)  
      
    MIDL_INTERFACE("58b7154c-9a1f-42ae-9df3-a137ffa37420")  
    ITest : public IDispatch  
    {  
    public:  
        virtual /* [id] */ HRESULT STDMETHODCALLTYPE Test(   
            /* [in] */ LONG_PTR x,  
            /* [retval][out] */ LONG_PTR *p) = 0;  
          
    };  
      
      
#else 	/* C style interface */  
  
    typedef struct ITestVtbl  
    {  
        BEGIN_INTERFACE  
          
        HRESULT ( STDMETHODCALLTYPE *QueryInterface )(   
            ITest * This,  
            /* [in] */ REFIID riid,  
            /* [annotation][iid_is][out] */   
            _COM_Outptr_  void **ppvObject);  
          
        ULONG ( STDMETHODCALLTYPE *AddRef )(   
            ITest * This);  
          
        ULONG ( STDMETHODCALLTYPE *Release )(   
            ITest * This);  
          
        HRESULT ( STDMETHODCALLTYPE *GetTypeInfoCount )(   
            ITest * This,  
            /* [out] */ UINT *pctinfo);  
          
        HRESULT ( STDMETHODCALLTYPE *GetTypeInfo )(   
            ITest * This,  
            /* [in] */ UINT iTInfo,  
            /* [in] */ LCID lcid,  
            /* [out] */ ITypeInfo **ppTInfo);  
          
        HRESULT ( STDMETHODCALLTYPE *GetIDsOfNames )(   
            ITest * This,  
            /* [in] */ REFIID riid,  
            /* [size_is][in] */ LPOLESTR *rgszNames,  
            /* [range][in] */ UINT cNames,  
            /* [in] */ LCID lcid,  
            /* [size_is][out] */ DISPID *rgDispId);  
          
        /* [local] */ HRESULT ( STDMETHODCALLTYPE *Invoke )(   
            ITest * This,  
            /* [annotation][in] */   
            _In_  DISPID dispIdMember,  
            /* [annotation][in] */   
            _In_  REFIID riid,  
            /* [annotation][in] */   
            _In_  LCID lcid,  
            /* [annotation][in] */   
            _In_  WORD wFlags,  
            /* [annotation][out][in] */   
            _In_  DISPPARAMS *pDispParams,  
            /* [annotation][out] */   
            _Out_opt_  VARIANT *pVarResult,  
            /* [annotation][out] */   
            _Out_opt_  EXCEPINFO *pExcepInfo,  
            /* [annotation][out] */   
            _Out_opt_  UINT *puArgErr);  
          
        /* [id] */ HRESULT ( STDMETHODCALLTYPE *Test )(   
            ITest * This,  
            /* [in] */ LONG_PTR x,  
            /* [retval][out] */ LONG_PTR *p);  
          
        END_INTERFACE  
    } ITestVtbl;  
  
    interface ITest  
    {  
        CONST_VTBL struct ITestVtbl *lpVtbl;  
    };  
  
      
  
#ifdef COBJMACROS  
  
  
#define ITest_QueryInterface(This,riid,ppvObject)	\  
    ( (This)->lpVtbl -> QueryInterface(This,riid,ppvObject) )   
  
#define ITest_AddRef(This)	\  
    ( (This)->lpVtbl -> AddRef(This) )   
  
#define ITest_Release(This)	\  
    ( (This)->lpVtbl -> Release(This) )   
  
  
#define ITest_GetTypeInfoCount(This,pctinfo)	\  
    ( (This)->lpVtbl -> GetTypeInfoCount(This,pctinfo) )   
  
#define ITest_GetTypeInfo(This,iTInfo,lcid,ppTInfo)	\  
    ( (This)->lpVtbl -> GetTypeInfo(This,iTInfo,lcid,ppTInfo) )   
  
#define ITest_GetIDsOfNames(This,riid,rgszNames,cNames,lcid,rgDispId)	\  
    ( (This)->lpVtbl -> GetIDsOfNames(This,riid,rgszNames,cNames,lcid,rgDispId) )   
  
#define ITest_Invoke(This,dispIdMember,riid,lcid,wFlags,pDispParams,pVarResult,pExcepInfo,puArgErr)	\  
    ( (This)->lpVtbl -> Invoke(This,dispIdMember,riid,lcid,wFlags,pDispParams,pVarResult,pExcepInfo,puArgErr) )   
  
  
#define ITest_Test(This,x,p)	\  
    ( (This)->lpVtbl -> Test(This,x,p) )   
  
#endif /* COBJMACROS */  
  
  
#endif 	/* C style interface */  
  
  
  
  
#endif 	/* __ITest_INTERFACE_DEFINED__ */  
  
  
  
#ifndef __TestIDLLib_LIBRARY_DEFINED__  
#define __TestIDLLib_LIBRARY_DEFINED__  
  
/* library TestIDLLib */  
/* [version][uuid] */   
  
  
EXTERN_C const IID LIBID_TestIDLLib;  
  
EXTERN_C const CLSID CLSID_Test;  
  
#ifdef __cplusplus  
  
class DECLSPEC_UUID("e692375c-f763-4ea2-beb1-3667da07393f")  
Test;  
#endif  
#endif /* __TestIDLLib_LIBRARY_DEFINED__ */  
  
/* Additional Prototypes for ALL interfaces */  
  
/* end of Additional Prototypes */  
  
#ifdef __cplusplus  
}  
#endif  
  
#endif
    0 comments

0 additional answers

Sort by: Most helpful
Most helpful Newest Oldest