C / C++ / MFC

2-Aug-04 9:11

Well a have a new quastian!
is it possible to check if you are aboute to install a new program
on your computer and if how?. I need to do this in a MFC app.

Please help me...

David Crow2-Aug-04 11:08

David Crow

2-Aug-04 11:08

Do you mean is it possible for one application to tell if another application is going to "install a new program?" In short, no. Copying files, updating/changing registry entries, etc are such common events that it would be impossible to know the difference between an install program doing it and a non-install program doing it.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Larsson2-Aug-04 11:52

2-Aug-04 11:52

Ok,
But if that is the case, How can it be able to disable a user to install a program if you only are a user? What if the different?. If you only are a user you must still check if you are about to install a new program or?

Is there not a way to check if you are about to install a program or are about to download a program from internet?.

David Crow3-Aug-04 2:37

David Crow

3-Aug-04 2:37

Larsson wrote:
...disable a user to install a program if you only are a user?

What do you mean by this? Are you trying to run an installation program as a "user" but it is not letting you? Please elaborate.

Larsson wrote:
Is there not a way to check if you are about to install a program...

No, because as far as the OS is concerned, a program is being started, period. What that program does is no different than what any other program does.

Larsson wrote:
Is there not a way to check if you are...about to download a program from internet?.

Possibly, but I am not an expert in networking protocols so I can't say for sure.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Larsson3-Aug-04 4:58

3-Aug-04 4:58

No im not trying to install any program as a user but if you only have a basic user account you cant install new sofware.

So there should be a check if you are a basic user if you are about to install any program so if that is the case you should be able to check if you are trying to install a new program.

Well this is what I want to do!...
If you are about to install a new program or trying to download something I want to check it so I can aprove it.
And I don't want to change so the user's become basic users.

It seems like I have a big problem if you not are able to check if you are about to install a new program.

I hope you anderstand what I meen!)

\Larsson

David Crow4-Aug-04 2:29

David Crow

4-Aug-04 2:29

Larsson wrote:
...if you only have a basic user account you cant install new sofware.

Only because the account on the domain, or a group on the domain to which the account belongs, has been set up that way. But just because you are a "basic user" does not also mean you can't install new software. They are mutually exclusive things.

Larsson wrote:
If you are about to install a new program or trying to download something I want to check it so I can aprove it.

So is your program some sort of background process or a service of some kind that just sits around and monitors stuff?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Larsson4-Aug-04 2:31

4-Aug-04 2:31

yes it is a service....)

CTreeCtrl

(Steven Hicks)ⁿ⁺¹2-Aug-04 9:01

(Steven Hicks)ⁿ⁺¹

2-Aug-04 9:01

Ok say theres a tree like this:

US
Virgina
  Richmond
  Danvile
NC
  Raliegh
  Durham

How would I write the function so that if I were trying to find if the NC item existed under the US parent?

Heres my attemt, obviously falled, but CTreeCtrls are not my strength:

HTREEITEM IsItemInTree(CString m_strText, HTREEITEM hElement)
{
//Variables
//Date: 8 2 04
HTREEITEM hNextItem=hElement;

while (m_cHistoryTree.GetNextItem(hNextItem,TVGN_NEXT)!=NULL)
{
hNextItem=m_cHistoryTree.GetNextItem(hNextItem, TVGN_NEXT);

MessageBox(m_cHistoryTree.GetItemText(hNextItem));

if (m_cHistoryTree.GetItemText(hNextItem)==m_strText)
{
MessageBox("it exists");
return hNextItem;

}
}

return NULL;
}

returns null everytime

-Steven Hicks

CPA

CodeProjectAddict

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Re: CTreeCtrl

PJ Arends2-Aug-04 16:26

2-Aug-04 16:26

TVGN_NEXT is to get the next sibling item. Somewhere in the loop you want to use TVGN_CHILD to get the first child item.

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04

Within you lies the power for good - Use it!

Re: CTreeCtrl

(Steven Hicks)ⁿ⁺¹2-Aug-04 18:41

(Steven Hicks)ⁿ⁺¹

2-Aug-04 18:41

Is that in the first go through of the while loop?

-Steven Hicks

CPA

CodeProjectAddict

Actual Linux Penguins were harmed in the creation of this message.

More tutorials: Ltpb.8m.com: Tutorials |404Browser.com (Download Link)

Re: CTreeCtrl

PJ Arends2-Aug-04 19:40

2-Aug-04 19:40

This untested code should go through the tree, starting at the supplied HTREEITEM, looking for the first occurance of the text.

HTREEITEM MyTree::FindItem (CString text, HTREEITEM start)
{
  HTREEITEM child = NULL;
  while (start && GetItemText(start) != text)
  {
    child = GetChildItem(start);        // equivalent to GetNextItem(start, TVGN_CHILD)
    while (child && GetItemText(child) != text)
    {
      child = FindItem(text, child);
      if (!child)
        child = GetNextSiblingItem(child);  // equivalent to GetNextItem(child, TVGN_NEXT)
    }
 
    if (child)
      break;
    start = GetNextSiblingItem(start);
  }
 
  if (GetItemText(start) == text)
    return start;
  return child;
}

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04

Within you lies the power for good - Use it!

A CEdit question

0v3rloader2-Aug-04 8:55

0v3rloader

2-Aug-04 8:55

Hi there,

I would like to know how a derived class from CEdit can receive command notifications directly? By directly I mean without having to be listening to messages in the parent window.

Can someone please drop me a line?

Thanks,

David

PJ Arends2-Aug-04 9:23

2-Aug-04 9:23

Check out the ON_CONTROL_REFLECT and ON_CONTROL_REFLECT_EX macros.

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04

Within you lies the power for good - Use it!

0v3rloader2-Aug-04 9:29

0v3rloader

2-Aug-04 9:29

Ohhh! Thanks for the reply PJ! I was beginning to feel desperate...
So it is true then... the stupid commands are sent to the parent window and cannot be listened anyother way, can they?

Can I also ask: how can I make my CEdit-derived class know when the content (the input text) of the control has changed? Is there a better way of knowing this without having to use message_reflection techniques?

Again, thanks a million!!

David

PJ Arends2-Aug-04 9:46

2-Aug-04 9:46

If you want the your control class to handle it's own messages then you have to use message reflection.

dNimrod#X wrote:
how can I make my CEdit-derived class know when the content (the input text) of the control has changed? Is there a better way of knowing this without having to use message_reflection techniques?

No, you have to use message reflection. Handle either the reflected EN_UPDATE or EN_CHANGE message to handle text changes in your edit control.

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04

Within you lies the power for good - Use it!

0v3rloader2-Aug-04 12:35

0v3rloader

2-Aug-04 12:35

Thanks a lot PJ!!
You have been very helpful indeed!

Cool | :cool:

dNimrod#X
________________________

downloading?

Larsson2-Aug-04 8:17

2-Aug-04 8:17

Is it possible to check if something is downloding from internet?
I Need to check from my MFC App if somthing is downloding from internet.

Please help me someone.

\Larsson

No single way out

bikram singh2-Aug-04 18:02

bikram singh

2-Aug-04 18:02

On a global scale, I'd use a proxy. Since a user can download using FTP,HTTP etc.I would need to make a proxy for each. However, an app can also copy a file using it's own "protocol". zso, there is no easy way to get notified of every type of download.

Bikram Singh

Re: downloading?

Spiritofamerica7-Aug-04 11:12

Spiritofamerica

7-Aug-04 11:12

yes

a pretty hard way:

if you know api hooking you can hook urldownloadtofile function you can find it in urlmon.dll and when something downloads you can display a message box on the screen and you can allow the download by letting it return what it wants or make it return a error and thus end the download before it begins. But of course they might still be downloading throught plain winsock instead of urldownloadtofile and you should probably try to hook some functions like recv also.

a even harder one wich I never did just heard about:

if you don't you can write a driver with the use of the winddk that acts just like a driver but filters connections.

I know no other ways but there might be lots

for more info on api hooking search here on codeproject a article by a russian person and also one by a chinese person but I forgot their names sorry.

One article is something about disabeling ctrl alt del and contains a very good api hooking class.

you should look at that.

Re: downloading?

Larsson7-Aug-04 23:58