Re: Locked Computer and Hooking - C / C++ / MFC Discussion Boards

Steve Schaneville7-Sep-04 6:35

7-Sep-04 6:35

Thanks for the links, especially the componentsource one... that look like one that I'll have to keep on file for future projects.

~Steve

CTreeCtrl Right Click question...

Maximilien7-Sep-04 5:04

Maximilien

7-Sep-04 5:04

I handle the right click in a CTreeCtrl with

ON_NOTIFY( NM_RCLICK, IDC_TREE1, OnTreeRclick )

and

void CTestTreeDlg::OnTreeRclick( NMHDR* pNMHDR, LRESULT* pResult )
{
 NM_TREEVIEW* pNMTreeView = (NM_TREEVIEW*)pNMHDR;
 HTREEITEM hSelItem = pNMTreeView->itemNew.hItem;
}

When I right click on the tree background, not on a leaf or node, the hSelItem is not valid, and is not a "simple" value like NULL or zero.

Is there a way to check to see if the HTREEITEM item is valid ?

I tried the following to see if I can get the item based on the hitem the notification message gave back, it could "work" but it gives a "First-chance exception" when passing a bad hitem.

TVITEM item;
TCHAR szText[1024];
item.hItem = hSelItem;
item.mask = TVIF_TEXT | TVIF_HANDLE;
item.pszText = szText;
item.cchTextMax = 1024;
BOOL bWorked = m_Tree->GetItem(&item);

Thanks.

Max.

Maximilien Lincourt
Your Head A Splode - Strong Bad

Re: CTreeCtrl Right Click question...

Hans Ruck7-Sep-04 6:00

Hans Ruck

7-Sep-04 6:00

I would use:

void CTestTreeDlg::OnTreeRclick( NMHDR* pNMHDR, LRESULT* pResult )
{ 
  CPoint point(GetMessagePos());
  m_tree.ScreenToClient(&point);
  <br>
  HTREEITEM hi=m_tree.HitTest(point);
  <br>
  if (hi)
  {
    // ...
  }
  // ...
}

where m_tree is the CTreeCtrl member associated with your control.

Maybe not the best method but it works.

"though nothing
will keep us together
we can beat them
for ever and ever"

rechi

Re: CTreeCtrl Right Click question...

Maximilien7-Sep-04 6:43

Maximilien

7-Sep-04 6:43

yep, I've read about using HitTest.

It seems like the lesser evil ...

Thanks.

Maximilien Lincourt
Your Head A Splode - Strong Bad

Image Processing problem

fenter_ren7-Sep-04 3:56

fenter_ren

7-Sep-04 3:56

How to find a template in a Bmp file? Maybe the template in the Bmp file is rotate or scaled.Who can tell me the algorithm? Thanks!

[MFC] ActiveX

chrone7-Sep-04 3:26

chrone

7-Sep-04 3:26

I made a MFC ActiveX. I want to open the activeX in a toolWindow with the createToolWindow method.
When The toolWindows is created, I have Hatched border at the right and bottom of my activeX.
How can i do to suppress it ? (It seems that all MFC ActiveX i downloaded do the same thing....)

Locked Computer and Hooking

caykahve7-Sep-04 2:09

caykahve

7-Sep-04 2:09

Hi,

I'm using WH_MOUSE and WH_KEYBOARD hooks to sense user movement just like a screensaver. The screensaver prevents the hook messages from reaching the program. Therefore I disable the screensaver when I enable hooking.

Now I've realized that if the user locks the computer manually - by pressing CTRL+ALT+DEL and afterwards the "Lock Computer" button, then the hook messages never reach the program.

Is there a way to let the hook messages pass beyond the logon screen and reach my running program?

Thanks in advance...

Re: Locked Computer and Hooking

gamitech7-Sep-04 10:01

gamitech

7-Sep-04 10:01

inject your code into the process that is showing the user screen and enable hooks from it

gabby

Get URL via Drag'n'Drop

e-DJ7-Sep-04 1:44

e-DJ

7-Sep-04 1:44

Hi there,
I want a dialog-based MFC application, that receives URLs from Internet Explorer via Drag'n'Drop.
My Dialog consists of Listboxes, Edit-fields, buttons and so on. I want my Internet-Explorer to show a html-page. When I drag this page to my dialog, I want to process this URL to display the parts of the URL in different controls.

I tried a simple FileManager-Drop Operation, but Internet Explorer does not provide URLs via this Mechanism. All the OLE-examples show, how to drag items from a listbox into another listbox.

How can I receive a Drop from Internet-Explorer?

e-DJ

How to know which module has handles in a process

Takanobu Maekawa7-Sep-04 1:14

Takanobu Maekawa

7-Sep-04 1:14

Hello,

Now I have been testing a aplication program which is implimented
by Win32(VC++) and Pro*C.

What I am comfused is that the count of the application's handles
which is displayed on TaskManager is incremented only, never decremented.
The application should be used for 24 hours everyday,
so I think this is a serious problem.

I have been triying to check my code,
especially where kernel objects is created and the handle should be closed,
but I haven't found what is wrong.

I guess that I can get some hints if I can know which module has handles
in the application process.

Cay anybody Know about it?
or what I should do anything else generally?

regards.

Takanobu Maekawa

Re: How to know which module has handles in a process

Arsalan Malik7-Sep-04 1:25

Arsalan Malik

7-Sep-04 1:25

See this Process Explorer can help:
http://www.sysinternals.com/ntw2k/freeware/procexp.shtml

Eek! | :eek:

Arsalan Malik

Re: How to know which module has handles in a process

Takanobu Maekawa7-Sep-04 2:08

Takanobu Maekawa

7-Sep-04 2:08

Thank you!!
That is just what I need!.
I have found some handles which are associated with registry key operations.
thanks very much again.

Takanobu Maekawa

How to create a program cannot be kill by anyway ?

chauhoangtrung7-Sep-04 1:11

chauhoangtrung

7-Sep-04 1:11

hi
I write a program, and I want my program cannot not be kill by TaskManager, same easycafe. But I don't know the way to do this.
When i choose client.exe (exe file of easycafe) and click End Process, the process still run.

Re: How to create a program cannot be kill by anyway ?

User 127828-Sep-04 19:27

User 12782

8-Sep-04 19:27

You could write the program as a service so that it'd run under the SYSTEM account and then you couldn't kill it without admin privillages.

modified 12-Jul-20 21:01pm.

Graphics (Help!)

txpablo7-Sep-04 0:38

txpablo

7-Sep-04 0:38

Hi. I want to call, from an application made with Visual C++, Excel or Matlab so that one of both could represent a mathematical function. How can I do that?. Someone can help me?

Re: Graphics (Help!)

jmkhael7-Sep-04 0:48

jmkhael

7-Sep-04 0:48

This can get you started

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnoffdev/html/vsofficedev.asp?SD=GN&LN=EN-GB&gssnb=1[^]

http://www.codeproject.com/samples/matlabeng.asp[^]

http://www.codeproject.com/info/search.asp?target=matlab&st=kw&qm=all[^]

Papa

while (TRUE)
Papa.WillLove ( Bebe ) ;

Is this possible? not clicked, always on top window.

gaesabal7-Sep-04 0:20

gaesabal

7-Sep-04 0:20

I want to make some form.
It's properties are : alway on top, transparency and NOT CLICKED.

ur...what I means is: the window look like a translucent glass.
well, another word, a concept like the 'layer' of the Photoshop.

(sorry, my english level is very~~ low... Cry | :((

)

Does this form is possible? and how?
:: the major point is 'never clicked'

thanks! Wink | ;)

CSplitterWnd question...

GerhardC7-Sep-04 0:19

GerhardC

7-Sep-04 0:19

Hi There,

Does anybody know if there is a way that you can prevent a
CSplitterWnd from resizing? For example if user's mouse is on
the CSplitterWnd border, the icon should not change and the user
should not be able to make the window smaller or bigger.

Second question, if you have a couple of nested CSplitterWnd's,
how can you show and hide a specific CSplitterWnd?

I would appreciate it very much if any one could help me
on these questions.

Thanks
Gerhard

Directory-tree in a Combobox

GDavy7-Sep-04 0:00

GDavy

7-Sep-04 0:00

hello guys,

I need in one of my dialogs a combobox with the directory tree of the PC.
You know, like the one you see in the open-file dialog of VC Studio ( the "Look in" combo)..
Is there an easy method to accomplish this?
or will I need to querry for the directorys myself and set icons etc....

Any advice welcome,
thx
Davy

Re: Directory-tree in a Combobox

David Crow7-Sep-04 2:48

David Crow

7-Sep-04 2:48

Do you mean something like the CB_DIR message?

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

Can I add a CButton to a CScrollView? [MFC]

Magnus7656-Sep-04 23:38

Magnus765

6-Sep-04 23:38

Hi,

I would like to know if I can I add a CButton to a CScrollView?
If so, how can I do it or is there some sample.

Regards,
Magnus

Re: Can I add a CButton to a CScrollView? [MFC]

David Crow7-Sep-04 2:50

David Crow

7-Sep-04 2:50

Doubtful, but you can add one to a CFormView, which is derived from CScrollView.

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

Re: Can I add a CButton to a CScrollView? [MFC]

Magnus7657-Sep-04 23:44

Magnus765

7-Sep-04 23:44

Great!
A CFormView was just what I needed!

Thanks,
Magnus

rror LNK2001: unresolved external symbol

manikanth6-Sep-04 23:21

manikanth

6-Sep-04 23:21

hi all,
i am getting this error
error LNK2001: unresolved external symbol "public: __thiscall CMyCrypto::~CMyCrypto(void)" (??1CMyCrypto@@QAE@XZ)

<br />
// crypto.h<br />
<br />
class CMyCrypto {<br />
...<br />
    CMyCrypto(LPTSTR lpPassword, ALG_ID algorithm);<br />
    ~CMyCrypto();<br />
<br />
    BOOL Encrypt(LPBYTE pData, LPDWORD pdwDataSize, <br />
                 DWORD dwBufferSize, BOOL bFinal);<br />
    BOOL Decrypt(LPBYTE pData, LPDWORD dwDataSize,<br />
                 BOOL bFinal);<br />
<br />
...

why is this error?

thank you

mani kanth

Re: rror LNK2001: unresolved external symbol

Joaquín M López Muñoz6-Sep-04 23:35

Joaquín M López Muñoz

6-Sep-04 23:35

~CMyCrypto();

This line declares, not does not define, the destructor of CMyCrypto. If this class is yours (i.e. you have written it) than you'll have to supply the destructor. Possibly a do-nothing destructor will do:

class CMyCrypto {
...
~CMyCrypto()
{
}
// alternatively you can define the dtor in the corresponding .cpp file

Hope this helps.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

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