C / C++ / MFC

Asha Udupa8-Jun-05 1:15

Asha Udupa

8-Jun-05 1:15

Task manager before removing the process from the system doesn't it send any notification to the process? Are there any way to track this?

Bob Stanneveld8-Jun-05 1:19

8-Jun-05 1:19

As I explained in my earlier post, the taskmanager doesn't notify the application.

The taskmanager is like a thief. It takes something from windows and it doesn't notify anything...

Behind every great black man...
... is the police. - Conspiracy brother

Blog[^]

Tom Archer8-Jun-05 2:59

8-Jun-05 2:59

Are you sure about that? If I make a modification to a a text file in notepad and attempt to shut down notepad from the task manager, notepad pops up and asks me if I want to save the work. Task manager then pops up and says that notepad is not responding. While I've never checked into the message sent from task manager, that obviously seems to indicate that the applicatoin does receive some sort of notification.

Bob Stanneveld8-Jun-05 3:06

8-Jun-05 3:06

If you shot down the application, than you recieve a notification, but if you end the process (on the process tab) you don't get it. Plus if you press the "End now" buttond on the dialog that the TM pops up, the application is terminated no matter what.

You can conclude from this that it is not safe to rely on that behaviour.

Behind every great black man...
... is the police. - Conspiracy brother

Blog[^]

Tom Archer8-Jun-05 3:23

8-Jun-05 3:23

Yep. You're correct. I just ran some tests and verified with spy++ that on the "end now", you don't get a message. I'm thinking there's got to be a way to prevent the shut down though as I've seen apps in the past that I couldn't close. However, it's probably some kludge like stating you're in debug mode when you're not - I seem to remember messages to the effect that the app couldn't be shut down becuase it was being debugged when clearly it wasn't.

Bob Stanneveld8-Jun-05 3:29

8-Jun-05 3:29

ThatsAlok also says that there are ways to fool the TM. He says that he has some code in an article that he wrote that does the trick, but I couldn't find it yet.

I've also seen apps that didn't close even when I wanted them too, but that was in the Win98 days. Now with Win2K and WinXP I don't have that problem anymore.

Behind every great black man...
... is the police. - Conspiracy brother

Blog[^]

ThatsAlok8-Jun-05 17:58

8-Jun-05 17:58

Bob Stanneveld wrote:
ThatsAlok also says that there are ways to fool the TM. He says that he has some code in an article that he wrote that does the trick, but I couldn't find it yet.

Hain, BOB I havn't write any article that can fool TM. I am saying that a Article present at CP demonstrate that, here is link for that :-

http://www.codeproject.com/system/Paladin.asp[^]

I have discussion over this TOPIC with Mr. J. Newcommer in FEB this year at Microsoft.public.vc.mfc newsgroup, wheather it is good or not!

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

cheers,
Alok Gupta

Tom Archer8-Jun-05 3:30

8-Jun-05 3:30

Here's some interestnig reading for you to understand what's going on:
http://blogs.msdn.com/oldnewthing/archive/2004/07/22/191123.aspx#191459[^]
http://blogs.msdn.com/oldnewthing/archive/2004/07/23/192531.aspx[^]

Bob Stanneveld8-Jun-05 3:45

8-Jun-05 3:45

That was a interesting read! Thanks Big Grin | :-D

Behind every great black man...
... is the police. - Conspiracy brother

Blog[^]

ThatsAlok8-Jun-05 18:02

8-Jun-05 18:02

Tom Archer wrote:
http://blogs.msdn.com/oldnewthing/archive/2004/07/22/191123.aspx#191459[^]
http://blogs.msdn.com/oldnewthing/archive/2004/07/23/192531.aspx[^]

Nice Collection 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

ThatsAlok8-Jun-05 1:05

8-Jun-05 1:05

Asha Udupa wrote:
Is there anyway to handle the forced exit of an application by task manager?

I Believe, No Way. Better way is to hide you application from TaskManager.

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

cheers,
Alok Gupta

toxcct8-Jun-05 1:14

toxcct

8-Jun-05 1:14

ThatsAlok wrote:
Better way is to hide you application from TaskManager.

but you can always use the process tab and its "terminate the process" (not sure about the translation, i use french version of windows Big Grin | :-D

)

TOXCCT >>> GEII power
[toxcct][VisualCalc]

ThatsAlok8-Jun-05 1:26

8-Jun-05 1:26

toxcct wrote:
you can always use the process tab

There are way to hide from process TAB too 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

toxcct8-Jun-05 1:32

toxcct

8-Jun-05 1:32

ThatsAlok wrote:
There are way to hide from process TAB too

ok, i didn't know that Big Grin | :-D

...

in fact, i never touch the task manager...

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Bob Stanneveld8-Jun-05 1:53

8-Jun-05 1:53

Interesting! How do you do such a thing?

Behind every great black man...
... is the police. - Conspiracy brother

Blog[^]

ThatsAlok8-Jun-05 1:56

8-Jun-05 1:56

Bob Stanneveld wrote:
How do you do such a thing?

I implemented during one of my project, it's code is available at CODEPROJECT. it is written by pudn.com (YEAH thats author name)

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

cheers,
Alok Gupta

Tom Archer8-Jun-05 3:20

8-Jun-05 3:20

When the user first selects to terminate the process from the task manager, you get a WM_CLOSE message where you can save files and so on. However, if the app doesn't close, the task manager will display a message allowing the user to shut down the application immediately. On this attempt, you don't seem to get a message. (At least not one that is show in spy++).

I'm thinking there's got to be a way to prevent closing as I've seen applications that couldn't be closed from the task manager. However, I don't know how they accomplished that.

Tom Archer8-Jun-05 3:28

8-Jun-05 3:28

Here's some interestnig reading for you to understand what's going on:
http://blogs.msdn.com/oldnewthing/archive/2004/07/22/191123.aspx#191459[^]

VS 6 Open Dialog

nombrecinq7-Jun-05 23:17

nombrecinq

7-Jun-05 23:17

Sorry if this is super easy, but I'm a newbie at this stuff. Can somebody tell me what I need to do to create an open document dialog box? Basically I need to be able to choose a sound file by clicking a button. Thanks.

RChin7-Jun-05 23:21

RChin

7-Jun-05 23:21

Simple with MFC. Use the CFileDialog class. It encapsulates the windows commond dialog box.

Documentation[^]

I Dream of Absolute Zero

Cedric Moonen7-Jun-05 23:23

Cedric Moonen

7-Jun-05 23:23

Look at CFileDialog in the MSDN (I suppose you are using MFC)

nombrecinq7-Jun-05 23:46

nombrecinq

7-Jun-05 23:46

Okay I read that documentation and I played around with stuff, but I'm really not sure how to create m_ofn and then use its member functions.

Weiye Chen8-Jun-05 0:02

Weiye Chen

8-Jun-05 0:02

Check this example here:
http://www.codersource.net/mfc_cfiledialog.html[^]

<font=arial>Weiye Chen
Life is hard, yet we are made of flesh...

nombrecinq8-Jun-05 0:07

nombrecinq

8-Jun-05 0:07

Thanks a very good example thanks. Should I just rely on example code and creating classes and objects manually rather than going through the class wizard?