C / C++ / MFC

10-Sep-08 19:42

Hello everyone,

I am developing a C++ COM client (COM consumer) using #import statement, even if it works fine, I still find one issue when reading MSDN document about #import.

http://msdn.microsoft.com/en-us/library/8etzzkb6(VS.80).aspx

In the document, it mentioned two header files will be generated -- TLI and TLH files. But in my client project directory, there is only one tlh file. I am using VS 2008. My questions is why the tli file is missing, if not missing, where is it?

thanks in advance,
George

SandipG 10-Sep-08 20:47

SandipG

10-Sep-08 20:47

probably you are importing tlb with no_implementation attribute.

Regards,
Sandip.

George_George10-Sep-08 20:52

10-Sep-08 20:52

Thanks Sandip,

Here is my IDL file. I do not explicitly assign the no_implementation attribute. Any ideas?

#pragma once
#pragma pack(push, 8)

#include <comdef.h>

namespace TestATL1Lib {

//
// Forward references and typedefs
//

struct __declspec(uuid("1f97c59f-609d-4f86-ba31-db9fd88bbbd4"))
/* LIBID */ __TestATL1Lib;
struct /* coclass */ bbbb;
struct __declspec(uuid("2bd6b985-3287-492f-a781-decdd03ca0d0"))
/* dual interface */ Ibbbb;
struct /* coclass */ cccc;
struct __declspec(uuid("1a3a642c-50c0-4c30-9807-3bf4727a1157"))
/* dual interface */ Icccc;

//
// Smart pointer typedef declarations
//

_COM_SMARTPTR_TYPEDEF(Ibbbb, __uuidof(Ibbbb));
_COM_SMARTPTR_TYPEDEF(Icccc, __uuidof(Icccc));

//
// Type library items
//

struct __declspec(uuid("9b0304a2-a49a-4a3b-8d40-a05c4d7c009b"))
bbbb;
    // [ default ] interface Ibbbb

struct __declspec(uuid("2bd6b985-3287-492f-a781-decdd03ca0d0"))
Ibbbb : IDispatch
{};

struct __declspec(uuid("f68bfdc9-ebe3-424e-80ef-ed6465087c60"))
cccc;
    // [ default ] interface Icccc

struct __declspec(uuid("1a3a642c-50c0-4c30-9807-3bf4727a1157"))
Icccc : IDispatch
{};

} // namespace TestATL1Lib

#pragma pack(pop)

regards,
George

SandipG 10-Sep-08 21:47

SandipG

10-Sep-08 21:47

i do not have much experience with COM, but how does your TLH file look like
because TLI file contains implementation for compiler generated wrapper functions specified in .tlh file.

Regards,
Sandip.

George_George10-Sep-08 21:54

Re: #import type library [modified]

10-Sep-08 21:54

Thanks Sandip,

Here is what the tlh file looks like. Now with my posted TLH and TLI files, do you have any ideas why there is no tli file generated?

#pragma once
#pragma pack(push, 8)

#include <comdef.h>

namespace TestATL1Lib {

//
// Forward references and typedefs
//

struct __declspec(uuid("1f97c59f-609d-4f86-ba31-db9fd88bbbd4"))
/* LIBID */ __TestATL1Lib;
struct /* coclass */ bbbb;
struct __declspec(uuid("2bd6b985-3287-492f-a781-decdd03ca0d0"))
/* dual interface */ Ibbbb;
struct /* coclass */ cccc;
struct __declspec(uuid("1a3a642c-50c0-4c30-9807-3bf4727a1157"))
/* dual interface */ Icccc;

//
// Smart pointer typedef declarations
//

_COM_SMARTPTR_TYPEDEF(Ibbbb, __uuidof(Ibbbb));
_COM_SMARTPTR_TYPEDEF(Icccc, __uuidof(Icccc));

//
// Type library items
//

struct __declspec(uuid("9b0304a2-a49a-4a3b-8d40-a05c4d7c009b"))
bbbb;
    // [ default ] interface Ibbbb

struct __declspec(uuid("2bd6b985-3287-492f-a781-decdd03ca0d0"))
Ibbbb : IDispatch
{};

struct __declspec(uuid("f68bfdc9-ebe3-424e-80ef-ed6465087c60"))
cccc;
    // [ default ] interface Icccc

struct __declspec(uuid("1a3a642c-50c0-4c30-9807-3bf4727a1157"))
Icccc : IDispatch
{};

} // namespace TestATL1Lib

#pragma pack(pop)

regards,
George

SandipG 10-Sep-08 22:04

SandipG

10-Sep-08 22:04

I cant see any function in TLH so i think compiler is not generating corresponding TLI.

I tried creating test.tlb without any contents and it gave me only .TLH

// Created by Microsoft (R) C/C++ Compiler Version 12.00.8168.0 (1060d860).
//
// e:\users\sandip\trialmfc\debug\test.tlh
//
// C++ source equivalent of Win32 type library test.tlb
// compiler-generated file created 09/11/08 at 13:29:04 - DO NOT EDIT!

#pragma once
#pragma pack(push, 8)

#include <comdef.h>

namespace TESTLib {

} // namespace TESTLib

#pragma pack(pop)
</comdef.h>

Does it make sense.

Regards,
Sandip.

modified on Thursday, September 11, 2008 4:42 AM

George_George10-Sep-08 23:33

how to retrieve all details on installed products in system

10-Sep-08 23:33

Thanks Sandip,

I have tried, you are correct. When adding some methods in some interface, the tli file is generated.

Here is the content of tli file when I add method FooAbc to interface IAbc.

inline HRESULT IAbc::FooAbc ( ) {
    HRESULT _hr = raw_FooAbc();
    if (FAILED(_hr)) _com_issue_errorex(_hr, this, __uuidof(this));
    return _hr;
}

regards,
George

yadhvi10-Sep-08 19:31

yadhvi

10-Sep-08 19:31

hi everyone, m working on retrieving all MS products that are installed on a system and that appear in add/remove programs. i heard about WMI, with which we can retrieve. But, its disadvantage is, it retrieves only those softwares that are installed by MSI. i also found another way that is registry where HKLM/software/microsoft/windows/currentversion/uninstall path where we can get all installed products. but, here m not getting any details about child products that come along with parent product. is there any way that you can suggest?

Re: how to retrieve all details on installed products in system

Hamid_RT10-Sep-08 19:43

Hamid_RT

10-Sep-08 19:43

Well you said registry is best place for you I think on the registry you can see a folder its name is install I think.

Re: how to retrieve all details on installed products in system

Rane10-Sep-08 20:26

Rane

10-Sep-08 20:26

I believe the child products( Confused | :confused:

) will also be listed in HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall path..

Regards,
Rane

linking error in C code!

ishwarverma10-Sep-08 19:26

ishwarverma

10-Sep-08 19:26

Hi guys,

i am having some problm while building my C code through VC++6.0. The following error i am getting while building:

--------------------Configuration: ReportVARS - Win32 Debug--------------------
Compiling...
ReportVARS.c
VALIDATE.C
ALLOC.C
BASENAME.C
BTRVUTIL.C
COBLUTIL.C
C:\Documents and Settings\IVarma\Desktop\kunda\FINALCODE\COBLUTIL.C(98) : warning C4244: '=' : conversion from '__int64 ' to 'long ', possible loss of data
C:\Documents and Settings\IVarma\Desktop\kunda\FINALCODE\COBLUTIL.C(116) : warning C4244: '=' : conversion from '__int64 ' to 'long ', possible loss of data
C:\Documents and Settings\IVarma\Desktop\kunda\FINALCODE\COBLUTIL.C(191) : warning C4244: '=' : conversion from '__int64 ' to 'long ', possible loss of data
C:\Documents and Settings\IVarma\Desktop\kunda\FINALCODE\COBLUTIL.C(208) : warning C4244: '=' : conversion from '__int64 ' to 'long ', possible loss of data
CPPPORT.C
DATE.C
FATAL.C
GETOPT.C
LEAPYEAR.C
LOG_DIAG.C
LOWERCAS.C
MISC.C
MONTHDAY.C
PHCLUST.C
REPORT.C
SKIPWHIT.C
STATUS.C
TODAY.C
TRUNC.C
UPPERCAS.C
BTRAPI.C
Linking...
BTRAPI.OBJ : error LNK2001: unresolved external symbol _WBRQSHELLINIT@4
BTRAPI.OBJ : error LNK2001: unresolved external symbol _BTRCALL@28
BTRAPI.OBJ : error LNK2001: unresolved external symbol _BTRCALLID@32
Debug/ReportVARS.exe : fatal error LNK1120: 3 unresolved externals
Error executing link.exe.

PLS suggest on THIS..

;---ISHWAR

Re: linking error in C code!

Rane10-Sep-08 19:37

Rane

10-Sep-08 19:37

Are you linking with the right library that holds these functions?.

Regards,
Rane

Re: linking error in C code!

ishwarverma10-Sep-08 19:40

ishwarverma

10-Sep-08 19:40

yes.....function is available in BRTAPI.c code......n hav included this file in ma project. and thn ater m tryin to compile it.....but thn it throws new erro:

--------------------Configuration: ReportVARS - Win32 Debug--------------------
Compiling...
ReportVARS.c
VALIDATE.C
ALLOC.C
BASENAME.C
BTRVUTIL.C
COBLUTIL.C
C:\Documents and Settings\IVarma\Desktop\kunda\FINALCODE\COBLUTIL.C(98) : warning C4244: '=' : conversion from '__int64 ' to 'long ', possible loss of data
C:\Documents and Settings\IVarma\Desktop\kunda\FINALCODE\COBLUTIL.C(116) : warning C4244: '=' : conversion from '__int64 ' to 'long ', possible loss of data
C:\Documents and Settings\IVarma\Desktop\kunda\FINALCODE\COBLUTIL.C(191) : warning C4244: '=' : conversion from '__int64 ' to 'long ', possible loss of data
C:\Documents and Settings\IVarma\Desktop\kunda\FINALCODE\COBLUTIL.C(208) : warning C4244: '=' : conversion from '__int64 ' to 'long ', possible loss of data
CPPPORT.C
DATE.C
FATAL.C
GETOPT.C
LEAPYEAR.C
LOG_DIAG.C
LOWERCAS.C
MISC.C
MONTHDAY.C
PHCLUST.C
REPORT.C
SKIPWHIT.C
STATUS.C
TODAY.C
TRUNC.C
UPPERCAS.C
BTRAPI.C
Linking...
BTRAPI.OBJ : error LNK2001: unresolved external symbol _WBRQSHELLINIT@4
BTRAPI.OBJ : error LNK2001: unresolved external symbol _BTRCALL@28
BTRAPI.OBJ : error LNK2001: unresolved external symbol _BTRCALLID@32
Debug/ReportVARS.exe : fatal error LNK1120: 3 unresolved externals
Error executing link.exe.

PLS LOOK INTO THIS..

-----ishwar

Re: linking error in C code!

Jijo.Raj10-Sep-08 20:13

Jijo.Raj

10-Sep-08 20:13

The BRTAPI.c file is added to project? or else linker couldn't find the corresponding obj file while linking and hence the error.

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

GUI with Qt

Sangeetha_J10-Sep-08 19:09

Sangeetha_J

10-Sep-08 19:09

Hi All,

I need to display the digital waveforms using Qt which is cyclized at a particular frequency. Please suggest some links and ideas.

With Regards,
Sangeetha.

santhoshv8410-Sep-08 19:14

santhoshv84

10-Sep-08 19:14

Hi,

You better go to qtforum.org or qtcenter.org

The price of anything is the amount of life you exchange for it.

Thanks and Regards.
SANTHOSH V

Rajesh R Subramanian10-Sep-08 19:14

Rajesh R Subramanian

10-Sep-08 19:14

I'll suggest you QT Forum[^].

Many are stubborn in pursuit of the path they have chosen, few in pursuit of the goal - Friedrich Nietzsche

.·´¯`·->Rajesh<-·´¯`·.
[Microsoft MVP - Visual C++]

Sangeetha_J10-Sep-08 19:48

Sangeetha_J

10-Sep-08 19:48

Hi,

Okay. I have posted the same in QtCenter. But i could not find any useful links.

With Regards,
Sangeetha.