C / C++ / MFC Discussion Boards

Re: CComPtr releasing problem

KarstenK4-Jan-10 3:34

KarstenK

4-Jan-10 3:34

CComPtr::Detach()

http://msdn.microsoft.com/en-us/library/w200fbea%28VS.80%29.aspx[^]

Press F1 for help or google it.
Greetings from Germany

Re: CComPtr releasing problem

A&Ms4-Jan-10 4:42

A&Ms

4-Jan-10 4:42

for m_pStream->Detach(); I got the following Error:

Error	1	error C2039: 'Detach' : is not a member of 'ATL::_NoAddRefReleaseOnCComPtr<T>'

Even I taype cast my CComPtr to CComPtrBase but again there were only to Member functions which both were in private scope! Confused | :confused:

Re: CComPtr releasing problem

KarstenK4-Jan-10 20:35

KarstenK

4-Jan-10 20:35

Casting is absolutitly no solution for this problem!!!

use different scope for both variables

Press F1 for help or google it.
Greetings from Germany

Re: CComPtr releasing problem

Stephen Hewitt4-Jan-10 3:13

Stephen Hewitt

4-Jan-10 3:13

Amir_m wrote:
because my Stream vars are defined with CComPtr class I coudn't use the Release method of my Stream variables.

CComPtr has a Release[^] method. Use . ***NOT*** ->: pStream.Release();

Steve

Re: CComPtr releasing problem

A&Ms4-Jan-10 3:29

A&Ms

4-Jan-10 3:29

of course I know But The Release Method of CComPtr Class is a private method and compiler does not let me to use it.

Re: CComPtr releasing problem

Stephen Hewitt5-Jan-10 3:54

Stephen Hewitt

5-Jan-10 3:54

Amir_m wrote:
of course I know But The Release Method of CComPtr Class is a private method and compiler does not let me to use it.

No, it's not private. The following compiles fine:

CComPtr<IStream> spStream;
spStream.Release();

Steve

Re: CComPtr releasing problem

KingsGambit4-Jan-10 18:16

KingsGambit

4-Jan-10 18:16

May be you can try as follows:

void Foo()
{
  {
    CComPtr<IStream> m_pStream;
    ::SHCreateStreamOnFileW(...);
  }

  {
   CComPtr<IStream> m_pStream2;
   ::SHCreateStreamOnFileW(...);
  }
}

Re: CComPtr releasing problem

A&Ms4-Jan-10 18:50

A&Ms

4-Jan-10 18:50

My Problem is accessing the file because the Stream Created previously doesn't release the file I can't access the file with another stream (even nullifying that stream doesn't cause it to release the file)

Re: CComPtr releasing problem

KingsGambit4-Jan-10 19:09

KingsGambit

4-Jan-10 19:09

In the code segment in my previour post, m_pStream and m_pStream2 are in different scopes (between {}), so the streams will be closed automatically when the scope ends. So, both calls to SHCreateStreamOnFile(...) will be successfull.

User permission problem with MFC

bhanu_85094-Jan-10 0:38

bhanu_8509

4-Jan-10 0:38

Dear All,

I have developed an application in MFC and it is working fine and creating directories and file in the program files directory when the program is run as administrator. But when the program is run as limited user account, the program cannot write any files in the program files directory.

The same application developed in JAVA seems to be working fine in both Admin user and limited user. When I googled, all articles recommends to create the files under Application Data for all users. But, for me changing this will be a huge task. Is there any other alternative to grant access to the limitied account user from my application.

Many thanks in advance.

Bhanu

Re: User permission problem with MFC

CPallini4-Jan-10 1:02

CPallini

4-Jan-10 1:02

bhanu_8509 wrote:
The same application developed in JAVA seems to be working fine in both Admin user and limited user.

So, why don't you use that one (just kidding...)? Big Grin | :-D

This may be useful [^].
Smile | :)

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]

Re: User permission problem with MFC

KarstenK4-Jan-10 2:01

KarstenK

4-Jan-10 2:01

check that the work of the Java-App isnt virtualized.

It isnt the right way to create some directories in the prog dir, if it isnt a installation. Better use the user-dirs

Press F1 for help or google it.
Greetings from Germany

Re: User permission problem with MFC

bhanu_85094-Jan-10 5:32

bhanu_8509

4-Jan-10 5:32

If I use the All Users/Application Data/ directory then the files created by Administrator cannot be overwrite by the Limited account user.

Please help me.

Re: User permission problem with MFC

KarstenK4-Jan-10 20:38

KarstenK

4-Jan-10 20:38

user data belongs in the user directorys.

If it are global settings than the admin can also write them in the registry.

Is is an architectual issue Unsure | :~

Press F1 for help or google it.
Greetings from Germany

Re: User permission problem with MFC

Rolf Kristensen6-Jan-10 10:45

Rolf Kristensen

6-Jan-10 10:45

A dirty hack could be to create an installer for your application, that grants access to everyone to the application folder.

One have to be an administrator to install the application, but then any user can use it.

Read / Create Excel file with out using odbc

Game-point3-Jan-10 23:00

Game-point

3-Jan-10 23:00

Hello Sirs,

How to Excel file read and create without using odbc.

Thanks

Failure is Success If we learn from it!!

Re: Read / Create Excel file with out using odbc

Cedric Moonen3-Jan-10 23:15

Cedric Moonen

3-Jan-10 23:15

Google for "Excel automation".

Cédric Moonen
Software developer

Charting control [v3.0 - Updated]
OpenGL game tutorial in C++

Re: Read / Create Excel file with out using odbc

Paresh Chitte3-Jan-10 23:42

Paresh Chitte

3-Jan-10 23:42

Please refer,

http://msdn.microsoft.com/en-us/library/aa155776%28office.10%29.aspx[^]
http://support.microsoft.com/kb/216686/[^]

Hope this will help.

Regards,
Paresh.

Re: Read / Create Excel file with out using odbc

CikaPero13-Jan-10 23:35

CikaPero

13-Jan-10 23:35

Hi,

I recommend that you don't use Excel Interop because it has many known issues, especially when used in web applications.

You could check out GemBox.Spreadsheet .NET Excel component for reading and writing XLS, XLSX, CSV, ODS and HTML files.

It is independent of Excel, light on resources and extremely fast.

It also supports advanced scenarios like Excel export/import to DataTable so you can easily bind your Excel files to UI controls with data binding.

Save Excel to ASP.NET stream web demo demonstrates it's usage in web application.

Connect to IRC server

Thilek3-Jan-10 20:55

Thilek

3-Jan-10 20:55

Hi guys,

I would like to create a simple program that can connect to a irc server and then send message on the main.. Can anyone give me ideas how to do it.... i have seach for some simple code but then could nt run on my visual studio since its showing so many errors...

can anyone given some simple codes to connect ?

Thank you.

Re: Connect to IRC server

ThatsAlok3-Jan-10 22:09

ThatsAlok

3-Jan-10 22:09

Thilek wrote:
I would like to create a simple program that can connect to a irc server and then send message on the main.. Can anyone give me ideas how to do it.... i have seach for some simple code but then could nt run on my visual studio since its showing so many errors...

I think you should search for simple socket based application, or try to create some client-server based application before actually jumping in Internet relay chat arena....

Frankly speaking, it will give great help and knowledge to you, once you able to make urself a small chattign application.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
Never mind - my own stupidity is the source of every "problem" - Mixture

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
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Re: Connect to IRC server

Moak3-Jan-10 23:12

Moak

3-Jan-10 23:12

Have a look at Beej's guide to networking programming[^], another starting point is the Winsock Programmer's FAQ[^], both come with examples. The rest is IRC protocol specific,

/M

Webchat in Europe Java | [Coffee]

(only 4K)

Re: Connect to IRC server

Thilek4-Jan-10 19:25

Thilek

4-Jan-10 19:25

Thanks guys... i manage to write the program in JAVA since i did socket programming in JAVA before.... i will try to work on this first.. once its could be done as i wanted, then i will do it with C++ since i wanted the program to be in C++ Smile | :)

Thanks a lot with your ideas and suggestions... It was all about socket to connect to IRC... never know it will be easy as this.... Really helped me..

disable CString value

Rakesh53-Jan-10 20:41

Rakesh5

3-Jan-10 20:41

hi all,

i have a value like this in my application..

CString strTemp = "hello world";

now, i want the word "world" to be disabled(grayed out..) like wat appear in a static text box..

is it possible?

Thanks,
Rakesh.

Re: disable CString value

KingsGambit3-Jan-10 20:50

KingsGambit

3-Jan-10 20:50

CString class holds just a string (array of characters). It doesn't have any color information associated with it.

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