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Anurag Gandhi31-Jul-07 20:26

31-Jul-07 20:26

Can you please clear your question; what exactly you want and what kind of user account control?? Is it a sort of database and do you want to retrive data from it based on username or any identity of user??

Anurag Gandhi.
http://www.softgandhi.co.nr

sheetal_0631-Jul-07 20:36

31-Jul-07 20:36

We will give Admin right,limited access etc.That details i want.

Shouvik Das31-Jul-07 21:28

31-Jul-07 21:28

please refer
http://msdn2.microsoft.com/en-us/library/aa375456.aspx[^]

There are only two kinds of people who are really fascinating-people who know absolutely everything, and people who know absolutely nothing.
Oscar Wilde (1854-1900)
Regards...
Shouvik

ThatsAlok5-Aug-07 22:50

5-Aug-07 22:50

look at api starting with Net*

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
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VC Forum Q&A :- I/ IV
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George_George31-Jul-07 15:35

31-Jul-07 15:35

Hello everyone,

Two questions about COM tlb file,

1. I am wondering what are the content of COM tlb file? I think it should be something like import library file (.lib) for a DLL which contains address and signature of exported functions.

2. Why for C# COM client, tlb file is not needed? Why for C/C++ (native) client, tlb file is needed?

thanks in advance,
George

Re: COM tlb file

ThatsAlok31-Jul-07 19:14

31-Jul-07 19:14

George_George wrote:
1. I am wondering what are the content of COM tlb file? I think it should be something like import library file (.lib) for a DLL which contains address and signature of exported functions.

you are somewhat right, yes it contain the decalartion of interface and related constant and enum. which vc++ compiler read to generate equivalent tlb and tlh files.

George_George wrote:
Why for C# COM client, tlb file is not needed? Why for C/C++ (native) client, tlb file is needed?

it not necessary to have tlb file even in vc++(native) to use com component, you can directly import com dll or add Header File geenrated by actual com workspace .

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief

Re: COM tlb file

George_George31-Jul-07 19:52

31-Jul-07 19:52

Thanks ThatsAlok,

ThatsAlok wrote:
it not necessary to have tlb file even in vc++(native) to use com component, you can directly import com dll or add Header File geenrated by actual com workspace .

If I have a C++ client and a C# COM component. Without a tlb file, how could the C++ client utilizing the C# COM component? I do not think it could be achieved by using header file, since C# does not have any header files.

For managed C++ client, we could import DLL directly, but for unmanaged C++ client, how could we utilize C# COM interfaces/classes without a tlb?

regards,
George

Re: COM tlb file

ThatsAlok31-Jul-07 22:12

31-Jul-07 22:12

George_George wrote:
For managed C++ client, we could import DLL directly, but for unmanaged C++ client, how could we utilize C# COM interfaces/classes without a tlb?

since c# com component deploy managed stuff, i believe might be you are not able to use it in c++ native.. but by the way... what C# dll is COM Server Exe or DLL

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief

Re: COM tlb file

George_George31-Jul-07 22:23

31-Jul-07 22:23

Thanks ThatsAlok,

I have tested that we could invoke C# (COM) function from C++ unmanaged code.

regards,
George

Re: COM tlb file

ThatsAlok31-Jul-07 22:55

31-Jul-07 22:55

George_George wrote:
I have tested that we could invoke C# (COM) function from C++ unmanaged code.

I don't have much Experience in InterOpr!, but just want know what C~ compiler is producing, is it dll or exe

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief

Re: COM tlb file

George_George31-Jul-07 23:04

31-Jul-07 23:04

Hi ThatsAlok,

I am using C++ unmanaged native exe and C# COM server.

regards,
George

Re: COM tlb file

ThatsAlok1-Aug-07 20:20

1-Aug-07 20:20

George_George wrote:
I am using C++ unmanaged native exe and C# COM server.

try #import "Path to application with app name"

and see if any .tlh and .tli file generated

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief

Re: COM tlb file

George_George2-Aug-07 21:56

2-Aug-07 21:56

Hi ThatsAlok,

I have found there is no .tlh and .tli generated in C# COM server project. Do you know how to make then generated?

regards,
George

Re: COM tlb file

ThatsAlok5-Aug-07 22:45

5-Aug-07 22:45

George_George wrote:
I have found there is no .tlh and .tli generated in C# COM server project. Do you know how to make then generated?

look if this help How to call a COM C# component from VC++?[^]..
and by the way the original name is Alok Smile | :)

Smile | :)

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief

Re: COM tlb file

George_George5-Aug-07 23:31

5-Aug-07 23:31

Thanks ThatsAlok, good resource!

regards,
George

Re: COM tlb file

Fernando A. Gomez F.1-Aug-07 7:01

Fernando A. Gomez F.

1-Aug-07 7:01

George_George wrote:
If I have a C++ client and a C# COM component. Without a tlb file, how could the C++ client utilizing the C# COM component?

Because the C# COM component implements IDispatch among other interfaces. With this one you have an automatized component, and you don't need to know the name of the method invoked, only their number (1, 2, 3, etc) which can be found in the extra information of the component, defined with IDL language.

A polar bear is a bear whose coordinates has been changed in terms of sine and cosine.
Quanehsti Pah
Nation States

Re: COM tlb file

George_George2-Aug-07 21:59

2-Aug-07 21:59

Thanks Fernando,

In my C# COM Server project, no IDL file is generated, do you know how to generate it?

regards,
George

Re: COM tlb file

Shouvik Das31-Jul-07 20:47

31-Jul-07 20:47

visit this
http://207.46.196.83/MSDN/ShowPost.aspx?PostID=454035&SiteID=1[^]

There are only two kinds of people who are really fascinating-people who know absolutely everything, and people who know absolutely nothing.
Oscar Wilde (1854-1900)
Regards...
Shouvik

Re: COM tlb file

George_George31-Jul-07 21:10

31-Jul-07 21:10

Thanks shouvik!

I think only containing interface information is not enough. I think it should also contain the CLSID (implementation class guid of the interface) information, right?

Or else, in client program, how could we know and pass both the IID and CLSID information to QueryInterface?

regards,
George

Re: COM tlb file

Shouvik Das31-Jul-07 22:13

31-Jul-07 22:13

Might be they have some wrap over class informations written within the COM component. I actually am more like a novice when it comes to COM. Please forgive me Blush | :O

Blush | :O

There are only two kinds of people who are really fascinating-people who know absolutely everything, and people who know absolutely nothing.
Oscar Wilde (1854-1900)
Regards...
Shouvik

Re: COM tlb file

George_George31-Jul-07 22:20

31-Jul-07 22:20

Thanks all the same shouvik! Do you have any recommendations for learning resources?

regards,
George

Re: COM tlb file

Shouvik Das31-Jul-07 22:35

31-Jul-07 22:35

http://www.codeproject.com/com/COM_from_scratch_1.asp[^]
http://www.codeproject.com/com/COM_from_scratch_2.asp[^]
http://www.codeproject.com/com/COM_from_scratch_3.asp[^]
http://www.codeproject.com/com/comintro.asp[^]
http://www.codeproject.com/com/#Beginners[^]

http://www.xml.com/pub/rg/COM[^]

Hope the above resources help you out

There are only two kinds of people who are really fascinating-people who know absolutely everything, and people who know absolutely nothing.
Oscar Wilde (1854-1900)
Regards...
Shouvik

Re: COM tlb file

George_George31-Jul-07 22:41

31-Jul-07 22:41

Thanks shouvik, great links!

regards,
George

function transfer

youbo31-Jul-07 15:28

31-Jul-07 15:28

#include <iostream>
using namespace std;
int reduce(int n,int m)
{for (m=2;m<n;m++)
(if (n%m="=0)
cout<<m<<endl;
return" n="" m;)
(if="" (n="=m)
cout<<m<<endl;
return" m;)
}

int="" main()
{="" int="" n,m;
cout<<"please="" write="" a="" number:"<<endl;
cin="">>n;
reduce(n,m);
return 0;
} what is wrong with my cade?who can perfect it for me?

Re: function transfer

bryce31-Jul-07 18:53

31-Jul-07 18:53

can you give us the intent of the code?

i.e. what do you WANT it to do?

bryce

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