Re: create an ATL project with exsisting IDL - COM Discussion Boards

Re: IE8 Addons Icon

led mike2-Jul-09 4:45

led mike

2-Jul-09 4:45

Juergen wrote:
I supposed

Well that doesn't give me any information to investigate with so I guess I can't help. Good luck.

Re: IE8 Addons Icon

myLongNic9-Jul-09 15:22

myLongNic

9-Jul-09 15:22

Could you please describe how to add icon in IE8 Manage-Addons-Dialog for the Browser-Extension?

Re: IE8 Addons Icon

Juergen10-Jul-09 0:19

Juergen

10-Jul-09 0:19

You have to add an registry-entry.
Here is an example:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Extensions\{FB5F1910-F110-11d2-BB9E-00C04F795683}]
"ButtonText"="Messenger"
"CLSID"="{1FBA04EE-3024-11D2-8F1F-0000F87ABD16}"
"Default Visible"="Yes"
"Exec"="C:\\Programme\\Messenger\\msmsgs.exe"
"HotIcon"="C:\\Programme\\Messenger\\msmsgs.exe,302"
"Icon"="C:\\Programme\\Messenger\\msmsgs.exe,301"
"MenuText"="Windows Messenger"
"ToolTip"="Windows Messenger"

HotIcon/Icon also could be a path to a "Image.ico"

Re: IE8 Addons Icon

myLongNic10-Jul-09 6:02

myLongNic

10-Jul-09 6:02

Hm, I think I asked the wrong question.
Under the "Browser extensions" I mean also the objects such as BHOs and custom ToolBands.
The one way I know to add icon for this object is to create a key in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Extensions\<GUID> where GUID is a CLSID of my BHO or ToolBand object. In this key I specify the ButtonText and Icon values.
After this manipulations I have:
1)Additional record in Manage Add-ons window
2)Icons for both records with specified CLSID.

In this solution I don't like additional record in Manage Add-ons window. I will appreciate if someone will describe how to add icon for BHO or ToolBand without adding additional record in Manage Add-ons window.

get last logon time

caiena24-Jun-09 7:36

caiena

24-Jun-09 7:36

i am not sure how i would do this but i am trying to modify the code below to take a directory entry and check the last logon time on eache domain controler currently it does a directory sear on each domain controler and it becomes unresponsive (this method is being call 1 time for each user on my domain i have over 3,000 users and i already have a DictionaryEntry object created

public DateTime LastLogon(string user, string domain)
{
DirectoryContext context = new DirectoryContext(DirectoryContextType.Domain, domain);
DateTime latestLogon = DateTime.MinValue;
string servername = null;
bool processed = false;
DomainControllerCollection dcc = DomainController.FindAll(context);

foreach (DomainController dc in dcc)
{
DirectorySearcher ds;
//System.Console.WriteLine(dc.Name);
bool exist = false;
using (dc)
using (ds = dc.GetDirectorySearcher())
{
ds.Filter = String.Format("(sAMAccountName={0})", username);
ds.PropertiesToLoad.Add("lastLogon");
dc.GetDirectoryEntry
ds.SizeLimit = 1;

// this search is killing my server
SearchResult sr = ds.FindOne();

if (sr != null)
{

DateTime lastLogon = DateTime.MinValue;
if (sr.Properties.Contains("lastLogon"))
{
exist = true;
lastLogon = DateTime.FromFileTime((long)sr.Properties["lastLogon"][0]);
}

if (DateTime.Compare(lastLogon, latestLogon) > 0)
{
latestLogon = lastLogon;
servername = dc.Name;
}
}

}
}

return latestLogon;
}

Re: get last logon time

Stuart Dootson24-Jun-09 21:37

Stuart Dootson

24-Jun-09 21:37

I think you might have got the wrong forum - your post certainly has nothing to do with COM - I suspect you may get more assistance posting in the C# forum.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

create an ATL project with exsisting IDL

kakamoni23-Jun-09 0:56

kakamoni

23-Jun-09 0:56

I have one existing idl file(Add.idl) where the interface and the library is look like the following

interface IAdd:IDispatch
{
[id(1), AddNumber("Add two number")]
}
library ADDLib
{
importlib("stdole32.tlb");
importlib("stdole2.tlb");

[
uuid(339171FF-A6E7-433F-A314-FF740F53FE56),
helpstring("Add Class")
]
coclass Add {
[default] interface IAdd;
};
};
Now I need to create one new ATL project which will import this file(Add.idl) and my interface will be derived from IAdd interface.
Then I will have to implement the AddNumber() method described in IAdd interface along with some new methods that will be present
in the newly implemented interface.
So,after implementation my idl file should look like this

import "Add.idl";
interface Isample:IAdd
{
};

Can any one tell me the steps how to implement this in VS2008.
I am very new to this , please help me..

Re: create an ATL project with exsisting IDL

Stuart Dootson23-Jun-09 2:37

Stuart Dootson

23-Jun-09 2:37

kakamoni wrote:
Can any one tell me the steps how to implement this in VS2008

Microsoft can[^].

Obviously at some point you'll need to edit the generated IDL to import your IDL, but this takes you 99% of the way there...

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Need help

kuttiam21-Jun-09 23:48

kuttiam

21-Jun-09 23:48

Hi,
I have a custom interface and my own interface with me. Now I want to develop an interface supporting those wo interfaces without any coclass.
Can I do this in COM. If yes, pls tell me how to do this.

Thanks for your help

Re: Need help

Stuart Dootson22-Jun-09 0:30

Stuart Dootson

22-Jun-09 0:30

kuttiam wrote:
Now I want to develop an interface supporting those wo interfaces

'Support' in what way? Give us some detail - the question you've posed is so vague that it's impossible to answer with any confidence, 'cause I'm not sure what you're really asking for.

kuttiam wrote:
without any coclass.
Can I do this in COM

If you need to create COM objects, then at some point you're going to be needing a co-class, so the answer's likely to be no.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Re: Need help

CPallini24-Jun-09 23:29

CPallini

24-Jun-09 23:29

kuttiam wrote:
without any coclass.

kuttiam wrote:
Can I do this in COM

No.

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Class not registered

subhabasu18-Jun-09 22:14

subhabasu

18-Jun-09 22:14

Hi all,

I am trying to instantiate a COM object of class GPM (gpmgmt.h and gpmgmt.dll) using CoCretateInstance. It returns "0x80040154 Class not registerd" error. The code snippet is -
::CoCreateInstance( __uuidof(GPM), // CLSID_GPM
NULL,
CLSCTX_LOCAL_SERVER,
__uuidof(IGPM), // IID_IGPM
(void **)&m_IGPMObj);

, where m_IGPMObj is a IGPM pointer.

I am building my code with VS2005 in XP Professional SP2.

The required header file and idl file are present in my machine, but not the dll (I dont know why). MSDN suggests that the dll is available in vista and 2008 server and redistributable for 2003 server and XP SP1. I have searched the dll in 2008 server and vista, it is not there also. I also tried to install GPMC in a XP SP3 machine, it simply fails saying that - LoadLibray fails.

Any help is appriciated.

Re: Class not registered

Stuart Dootson18-Jun-09 23:30

Stuart Dootson

18-Jun-09 23:30

If the DLL's not present then no, the class won't be registered. Big surprise. So, your problem boils down to 'why can't you install GPMC'?

You could use Dependency Walker[^] (specifically its 'Profile' feature) to see what LoadLibrary call is failing - open msiexec with Dependency walker, then in the Profile options, set the gpmc MSI file as a command line argument and run it.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Re: Class not registered

Md. Marufuzzaman6-Jul-09 21:53

Md. Marufuzzaman

6-Jul-09 21:53

Hi,
Try the following....
Go to the .Net command prompt & enter the command below:
RegAsm api_name.dll /tlb:api_Name.tlb /codebase
Note: It will register into GAC & export a tlb file.

Thanks

Md. Marufuzzaman

[SOLVED]Exception in COM

denghp18-Jun-09 21:31

denghp

18-Jun-09 21:31

I use __try and __except in my code to catch exception.But it doesn't work.Who can tell me how to catch exception in COM?Thanks in advance.

modified on Wednesday, July 22, 2009 3:07 AM

Re: Exception in COM

Stuart Dootson18-Jun-09 22:08

Stuart Dootson

18-Jun-09 22:08

What sort of exception - what's throwing it?

__try and __except == structured exceptions[^], IIRC.

try and catch == C++ exceptions[^]

COM, on the other hand, doesn't throw exceptions - it returns status codes in HRESULTs. Which is why I ask - where do these exceptinos come from?! Share some code, man!

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Re: Exception in COM

denghp18-Jun-09 22:19

denghp

18-Jun-09 22:19

for instance, there is a method in COM named f defined as followed
void f()
{
__try
{
int* pInt = NULL:
*pInt = 0;
}
__except(EXCEPTION_EXECUTE_HANDLER)
{
printf("exception!\n");
}
}

when I call f(), an exception is raised and the programe crash.

Re: Exception in COM

Stuart Dootson18-Jun-09 23:01

Stuart Dootson

18-Jun-09 23:01

That's COM? Mmmmm.

denghp wrote:
int* pInt = NULL:
*pInt = 0;

Look at your code. You're writing to a null pointer. Yes, you get an access violation. What is pInt meant to point at?

The problem you need to solve is not catching the exception - your problem is rewriting the code so it doesn't cause the access violation in the first case.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Re: Exception in COM

denghp18-Jun-09 23:05

denghp

18-Jun-09 23:05

I just want to test if __try and __except is in effect, so I write codes like that.The result is it doesn't work.

Re: Exception in COM

Stuart Dootson18-Jun-09 23:15

Stuart Dootson

18-Jun-09 23:15

So....your question had nothing to do with COM...OK

Anyway - I wrote this sample program:

#include <windows.h>
#include <iostream>

int f()
{
   __try
   {
      *(int*)0 = 0;
      std::cout << "good!\n";
   }
   __except( EXCEPTION_EXECUTE_HANDLER)
   {
      std::cout << "exception!\n";
   }
   return 3;
}

int main()
{
   f();
}

and compiled it with VS2008 using the command cl -EHa a.cpp (you apparently need -EHa for structured exception handling to work correctly).

As expected, it printed exception! - the structured exception handler was called correctly.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Re: Exception in COM

denghp18-Jun-09 23:25

denghp

18-Jun-09 23:25

OK，I will check my project configuration.Thank you very much.

Re: Exception in COM

Md. Marufuzzaman6-Jul-09 21:58

Md. Marufuzzaman

6-Jul-09 21:58

Hi,
I think you should through the exception from you COM+ function, & show / manage detail from where you call the function. Like

Try
{
}
Catch(Exception ex)
{through ex;}

Thanks

Md. Marufuzzaman

ATL COM server crash

Harish Pulimi17-Jun-09 5:36

Harish Pulimi

17-Jun-09 5:36

Hi
I haven an ATL COM in-proc server which is crashing randomly. I would not say it as a crash, the server just vanishes after running successfully for 9-10 hours. And then restarts immediately on the next call to CreateInstance() by the clients. I am unable to debug as this is not a crash and happening randomly. Though I'm not providing much details as the code base is huge, any thoughts just to start with would be very much appreciated. I observed that FinalRelease() was called before the server vanishes, but for the initial 10 hours many clients have called FinalCOnstruct() and FinalRelease() without any issues.

Thanks in advance
Harish

Re: ATL COM server crash

Roger Stoltz17-Jun-09 6:42

Roger Stoltz

17-Jun-09 6:42

Harish Pulimi wrote:
the server just vanishes after running successfully for 9-10 hours

I don't understand what you mean by this. How did you reach such conclusion?
As I interpret your complete description it seems like you're describing the expected behaviour.

I'm quite confident that clients don't call FinalConstruct() or FinalRelease() through any interface. Those functions are called internally by the framework. FinalConstruct() is called when the server is created by a client and FinalRelease() is called when the reference count reaches zero and the server consequently should be destroyed.
This means that if you're experiencing a lot of calls to FinalConstruct() and FinalRelease() your server is being created and destroyed multiple times by its client.

If this is not your intention, I suggest you put a breakpoint in FinalRelease() and you should be able to see the origin of the call in the call stack debug window when the breakpoint is hit. It looks like you expected the server to be created once and then stay alive until the application is closed, but this doesn't seem to be the case given your error description.

Perhaps I have misunderstood what you mean by "vanish" and if that's the case please elaborate on the subject a bit. It could mean that CreateInstance() fails after 9-10 hours, but I think you would have written that as a description of the error if this was the case.

"It's supposed to be hard, otherwise anybody could do it!" - selfquote
"High speed never compensates for wrong direction!" - unknown

Re: ATL COM server crash

Harish Pulimi17-Jun-09 21:46

Harish Pulimi

17-Jun-09 21:46

Hi Roger

Thanks a lot for your reply and apologies for not providing more details.

The architecture is like I have an exe which keeps track of all the servers that will be created by the clients through CreateInstance() calls. This exe needs to run all the time and if not already started, it will start through the next CreateInstance() call made by a client. The problem is that the exe runs fine for around 10 hours and after that it suddenly vanishes i.e. the process just stops, there is no crash reported and the exe immediately starts with the next CreateInstance() call but loses all the previous data. This happens only on some PCs, so I tried putting my debug build on that PC, but still there is no exception, no crash reported, so I thought this could be a heap corruption.

To reproduce this, I have created a test harness where around 100 clients continously bombard the exe with CreateInstance() calls and I could get an exception as follows, not sure whether this is the same crash but it seems like similar to the actual problem. Any idea how to debug the exceptions in OLE32.dll?
First-chance exception in AniteLicenser.exe (OLE32.DLL): 0xC0000005: Access Violation.
OLE32! 77600f3b()
OLE32! 77600ee9()
OLE32! 77600ba0()
OLE32! 7752ad31()
OLE32! 7752ac56()
OLE32! 776007f5()
OLE32! 77602df3()
OLE32! 77600715()
RPCRT4! 77e794bd()
RPCRT4! 77e79422()
RPCRT4! 77e7934e()
RPCRT4! 77e8a384()
RPCRT4! 77e8a3c5()
RPCRT4! 77e7bcc1()
RPCRT4! 77e7bc05()
RPCRT4! 77e76caf()
RPCRT4! 77e76ad1()
RPCRT4! 77e76c97()
KERNEL32! 7c80b713()

One time I could get the following call stack, seems something is going wrong in the Release() call, but the same exe runs fine for around 10 hours (100s of instances were created and released successfully in the meantime) and on a different PC, this exe ran fine for around 3 days:
ATL::_QIThunk::Release(ATL::_QIThunk * const 0x0171d440) line 2734 + 11 bytes
OLE32! 7750d339()
OLE32! 7750d09a()
OLE32! 7752deb3()
OLE32! 7752dcc8()
OLE32! 7752db6a()
RPCRT4! 77e799f4()
RPCRT4! 77ef421a()
RPCRT4! 77ef4bf3()
OLE32! 77600c15()
OLE32! 77600bbf()
OLE32! 7752ad31()
OLE32! 7752ac56()
OLE32! 776007f5()
OLE32! 77602df3()
OLE32! 77600715()
RPCRT4! 77e794bd()
RPCRT4! 77e79422()
RPCRT4! 77e7934e()
RPCRT4! 77e8a384()
RPCRT4! 77e8a3c5()
RPCRT4! 77e7bcc1()
RPCRT4! 77e7bc05()
RPCRT4! 77e76caf()
RPCRT4! 77e76ad1()
RPCRT4! 77e76c97()
KERNEL32! 7c80b713()

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.