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Re: how to edit open dialog box

David Crow2-Jun-06 3:01

2-Jun-06 3:01

You can still use CFileDialog or GetOpenFileName(). It will just require a starting folder. Check out the OPENFILENAME.lpstrInitialDir member variable.

"The largest fire starts but with the smallest spark." - David Crow

Get filename from Ftp!

bahamutnice31-May-06 23:32

31-May-06 23:32

Any expert can help me! how to use c++ to get all the filename from ftp server and use the list box to show all the filename.tytyty

Re: Get filename from Ftp!

David Crow1-Jun-06 3:44

1-Jun-06 3:44

Using MFC?

"The largest fire starts but with the smallest spark." - David Crow

Re: Get filename from Ftp!

bahamutnice1-Jun-06 16:01

1-Jun-06 16:01

ya, get the filename from ftp and put it on list box.tyty

Re: Get filename from Ftp!

David Crow2-Jun-06 3:14

2-Jun-06 3:14

So why not use MFC's FTP-related classes? Confused | :confused:

Confused | :confused:

"The largest fire starts but with the smallest spark." - David Crow

Socket Programming

satsumatable31-May-06 23:26

31-May-06 23:26

Hi,

I wrote Socket programming which is running good, i want to know whether all the data is received properly by the server with out any loss from client side. Meaning i need acknowledge from server side. How can i do it?.

Re: Socket Programming

Roger Stoltz1-Jun-06 0:06

1-Jun-06 0:06

All IP-packets are sent with a CRC32 checksum that the receiver recalculates to validate the data. If the checksum is incorrect, the packet is discarded.
This happens regardless of what you do, it's how the IP-protocol works.

If you're using an UDP ports, the sender will never be informed whether the receiver got the packet or not, at any OSI level, since UDP traffic is connectionless.

If you're using TCP ports, the sender will be sent an ACK for each packet. Whether the packet is to be resent or not is depending on a configurable threshold in the registry found at HKEY_LOCAL_MACHINE/SYSTEM/currentcontrolset/services/tcpip/parameters.

This means that the sender cannot be informed if the receiver got a corrupt packet since the receiving application will never get the packet since it's been discarded.
I suggest you implement a small protocol of your own at the OSI application level that send ACKs to the sender's application. You will then be informed if the receiver never got the packet by the absence of an ACK.

Hope this helps
--
Roger

It's supposed to be hard, otherwise anybody could do it!

Regarding CodeProject: "resistance is pointless; you will be assimilated"

Re: Socket Programming

ThatsAlok1-Jun-06 0:28

1-Jun-06 0:28

sivaprakashshanmugam wrote:
e. Meaning i need acknowledge from server side. How can i do it?.

Send a ACK Packet back to client simple

"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 and You

Re: Socket Programming

Moak1-Jun-06 6:36

1-Jun-06 6:36

Use TCP's gracefull close, no application specific enhancements needed.

Problem with VS 2003

NiceNaidu31-May-06 23:18

31-May-06 23:18

Hi friends,

I have an application that was designed in VS2002(VC 7).
Now when i tried 2 run the same in VS 2003, i am getting an error,
fatal error LNK1104: cannot open file 'mfc70.lib'

what might be the wrong with it ??

Appu..
"If you judge people, you have no time to love them."

Re: Problem with VS 2003

toxcct31-May-06 23:34

31-May-06 23:34

change the lib from mfc70.lib to mfc71.lib in your project settings

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: Problem with VS 2003

NiceNaidu31-May-06 23:50

31-May-06 23:50

Hi thank u so much for the response,

But i could not able to find out mfc70.lib in the settings.

Can u tell me where i can find mfc70.lib ??

Thanks again

Appu..
"If you judge people, you have no time to love them."

Re: Problem with VS 2003

toxcct31-May-06 23:51

31-May-06 23:51

in the linker section/settings...

if you don't see it, see the generated command line.

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: Problem with VS 2003

NiceNaidu1-Jun-06 0:00

1-Jun-06 0:00

No ,

No where i could able to find any .lib file in Linker Settings.

Had it been, VC6 i could have easily done this.But i am not able to find it in VC7 IDE.

Appu..
"If you judge people, you have no time to love them."

Re: Problem with VS 2003

toxcct1-Jun-06 0:02

1-Jun-06 0:02

Frown | :(

i don't have visualStudio environment with me, so you have to make an effort to find it by your self.

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: Problem with VS 2003

Sarath C31-May-06 23:54

31-May-06 23:54

Project Settings -> Linker -> Input -> Additional Dependencies

Sa^Rath

"D on't blindly follow rules you read somewhere without verifying that it makes sense for your situation!"

Re: Problem with VS 2003

toxcct31-May-06 23:56

31-May-06 23:56

this is VC6 settings. the OP uses VC2003

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: Problem with VS 2003

NiceNaidu1-Jun-06 0:13

1-Jun-06 0:13

Hi,
these are the steps i have done

1.Copy and Paste mfc70.lib,mfc70.dll,mfc70d.dll to the corresponding folders.
2.Under project->properties->Linker->input->Additional Dependencies, i have added mfc71.lib and build the application.

No i am getting

LNK2022 metadata operation failed (80131195)

What does this mean??

Thanks

Appu..
"If you judge people, you have no time to love them."

Re: Problem with VS 2003

NiceNaidu1-Jun-06 0:24

1-Jun-06 0:24

Hey I could able to Run it successfully.

I just deleteed the Release folder and Rebuild the application.

Thanks u guys, for u r help.

Appu..
"If you judge people, you have no time to love them."

Re: Problem with VS 2003

David Crow1-Jun-06 3:45

1-Jun-06 3:45

NiceNaiduCan u tell me where i can find mfc70.lib ??

If you have it, it's most likely in the c:\windows\system32\ folder. Have you checked there?

"The largest fire starts but with the smallest spark." - David Crow

How to handle Blank Frame when recording a video

huutribk200131-May-06 22:59

31-May-06 22:59

Hi,
I have record a video avi, but some time I get a blank frame at first. I need to remove this but I don't know how to check if bitmap frame is blank or not. Please help me with checking for this.

Thanks in advance!

CreateProcessAsUserW fails in Windows 2003 64 bits

alvaro31-May-06 22:58

31-May-06 22:58

Hi all,

As developing an NT service I've come across a little problem that I'm no able to sort it out. The problem is as follows:

My service is running on local system account (as it is natural) and one of its chores is to launch a particular process in a particular session and with the privileges of a particular user(impersonation). I think I do everything I am supposed to:

- Retrieve environment block of the user.
- Retrieve access token of the user we try to impersonate.
- Convert the token into a primary one.
- Stablish the session for the token.
- Fill in STARTUPINFO structure with the window station and desktop information
.
.
.
-Finally I call CreateProcessAsUserW this way:

CreateProcessAsUserW(hToken,
NULL,
wszCommand,
NULL,
NULL,FALSE,
NORMAL_PRIORITY_CLASS|CREATE_UNICODE_ENVIRONMENT,
Environment,
NULL,
&si,
&pi);

Well, the code I have in my service works perfectly well in any platform save for the case when I try to create a new process in a terminal session of windows 2003 Server (64 bits) where I get error code 6 (Handle not valid). Any suggestion? Thanks in advance.

Regards,
Alvaro

Windows Detruction Woes

HakunaMatada31-May-06 22:41

31-May-06 22:41

Hi,

I have a class which encapsulates a window. This class has all the Message handlers and stuff. Lets say this class is CMainFrame.

Now, I am creating CMainFrame from another class....

CMainFrame* cMainFrame = new CMainFrame() ;<br />
cMainFrame->CreateWindow() ;

Now when I destory the window does the object tha cMainFrame is pointing to also get deleted from memory or do we have to do it explicitly? What I did was

cMainFrame->DestroyWindow() ;<br />
delete cMainFrame ;<br />
cMainFrame = NULL ;

Is this destruction of the Window and object the correct way to do it?

---
With best regards,
A Manchester United Fan

The Genius of a true fool is that he can mess up a foolproof plan!

Re: Windows Detruction Woes

Nibu babu thomas31-May-06 23:10

Nibu babu thomas

31-May-06 23:10

TechyMaila wrote:
Now when I destory the window does the object tha cMainFrame is pointing to also get deleted from memory or do we have to do it explicitly? What I did was

cMainFrame->DestroyWindow() ;
delete cMainFrame ;
cMainFrame = NULL ;

Is this destruction of the Window and object the correct way to do it?

From MSDN:

About DestroyWindow:

Destroys the Windows window attached to the CWnd object. The DestroyWindow member function sends appropriate messages to the window to deactivate it and remove the input focus. It also destroys the window’s menu, flushes the application queue, destroys outstanding timers, removes Clipboard ownership, and breaks the Clipboard-viewer chain if CWnd is at the top of the viewer chain. It sends WM_DESTROY and WM_NCDESTROY messages to the window. It does not destroy the CWnd object.

Nibu thomas
A Developer

Programming tips[^] My site[^]

Re: Windows Detruction Woes

HakunaMatada31-May-06 23:22

31-May-06 23:22

Thanks Nibu.

So whatever I am doing is correct. I have one question though. As you can see from my example above, I have created a cMainFrame Pointer to the CMainFrame class. Now, lets say that cMainFrame is a private data member of class A. So, it is a who is creating cMainFrame and calling cMainFrame->CreateWindow().

Now my question is, if a user closes the window from the close button on the Window Title bar, I would have to notify class A so that it may do the required cleaning up like delete cMainFrame and stuff. So, when do I notify A then the window is destroyed? Lets say, that I am notifying A during WM_DESTROY. The implementation in A would be as follows:

void A::OnFrameDestroy()<br />
{<br />
delete cMainFrame ;<br />
cMainFrame = NULL ;<br />
}

But the fact is, when I do this, the teh control passes back to the window's WM_DESTROY message handler after notifying A which results in an error. Any suggestions....???? Confused | :confused:

Confused | :confused:

---
With best regards,
A Manchester United Fan

The Genius of a true fool is that he can mess up a foolproof plan!

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