C / C++ / MFC Discussion Boards

Re: C++ Question

Jason Henderson22-Nov-02 10:00

Jason Henderson

22-Nov-02 10:00

If it is public or protected it will work.

Jason Henderson
^{start page ; articles}
_{henderson is coming}
^{henderson is an opponent's worst nightmare}
^{* googlism *}

Re: C++ Question

retZ22-Nov-02 10:26

retZ

22-Nov-02 10:26

You should have a new public (not private or protected) member function in class B, inside which you would call A's DoFunc() function...

There are no failures; there are only extended learning opportunities.

Re: C++ Question

Gary R. Wheeler23-Nov-02 3:48

Gary R. Wheeler

23-Nov-02 3:48

If you want to guarantee that the base class version will be called, rather than a virtual one from a derived class, you can do the following:

class A
{
protected:
virtual int f() { return -1; };

public:
void DoFunc() { printf("\nValue: %d",A::f()); };

};

Software Zen: delete this;

stupid one... maximizing a window (another time)

Joan M22-Nov-02 6:52

Joan M

22-Nov-02 6:52

Hello!

After some fights with the taskbar at last I've been able to resize windows properly...

- If I use ShowWindow(SW_MAXIMIZED); then the window first appears on the normal workarea (up the taskbar) and then it gets well positioned all over the full screen (flickering).

- If I use:

<br />
this->SetWindowPos(&wndTopMost,0,0,::GetSystemMetrics(SM_CXSCREEN),::GetSystemMetrics(SM_CYSCREEN),SWP_SHOWWINDOW);<br />
this->ShowWindow(SW_SHOWMAXIMIZED);<br />

then the window is displayed properly and it gets maximized, but I can continue moving it.

PS:
it only don't work under win2k... unfortunately it's the OS in which the app must be installed. Dead | X|

Is there any way to make a window stay at the place in which I've left it?

thank you very much for your help!

Re: stupid one... maximizing a window (another time)

RedZenBird22-Nov-02 7:35

RedZenBird

22-Nov-02 7:35

You can do this:

Add the following to your message map:

ON_WM_NCLBUTTONDOWN()

Add the following to the //{{AFX_MSG section of the window header:

afx_msg void OnNcLButtonDown( UINT nHitTest, CPoint point );

Implment the following:

void CYourWindow::OnNcLButtonDown( UINT nHitTest, CPoint point )
{
}

When I did this, the window could not be dragged......

But, you'll need to do some work to get the caption buttons and system menu buttons to work......But this is a start......

Just trying to keep the forces of entropy at bay

Re: stupid one... maximizing a window (another time)

RedZenBird22-Nov-02 7:38

RedZenBird

22-Nov-02 7:38

Actually, all you need to do is in the non client click handler....i tested it with a dialog but any cwnd should do:

void CDummyDlg::OnNcLButtonDown( UINT nHitTest, CPoint point )
{
// swallow caption hits, let all others go through.....
//
if ( nHitTest != HTCAPTION )
CDialog::OnNcLButtonDown( nHitTest, point );

}

Just trying to keep the forces of entropy at bay

Re: stupid one... maximizing a window (another time)

Joan M22-Nov-02 8:04

Joan M

22-Nov-02 8:04

Direct, Easy and now working for me!

thanks!

Re: stupid one... maximizing a window (another time)

Ravi Bhavnani22-Nov-02 8:33

Ravi Bhavnani

22-Nov-02 8:33

You can also override WM_MOVING and WM_SIZING to force (or disallow) selective motion (hugging an edge, resizing to specific sizes only, etc).

/ravi

Let's put "civil" back in "civilization"
http://www.ravib.com
ravib@ravib.com

any body could provide the link?

imran_rafique22-Nov-02 5:49

imran_rafique

22-Nov-02 5:49

infect i want to halt ctrl+alt+del after writing my gina dll?
but i could not sucessed yet.
can any body provide the link of related examples?
i have searched a lot but i could not sucessed to find it out .
i need some gina examples.

r00d0034@yahoo.com

Re: any body could provide the link?

techno_guru22-Nov-02 5:59

techno_guru

22-Nov-02 5:59

Bonjour,

All you need I think ...

http://msdn.microsoft.com/msdnmag/issues/02/09/CQA/default.aspx

Simplicity is the supreme sophistication.
-------------------------------------------
http://www.borie.org/

Re: any body could provide the link?

techno_guru22-Nov-02 6:06

techno_guru

22-Nov-02 6:06

And this an exemple on how to implement GINA Cool | :cool:

=)

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/security/security/implementing_wlxloggedoutsas.asp

Simplicity is the supreme sophistication.
-------------------------------------------
http://www.borie.org/

return sucessfully.but?

imran_rafique22-Nov-02 5:18

imran_rafique

22-Nov-02 5:18

i have used this function, it return sucessfully but the system is not login and desktop did not appear.
is there any step remains ?
or is there any mistake?
if yes plz tell.
i will be very thank full to you.

BOOL Successful;
HANDLE AccessToken;
DWORD ErrorCode;
char *BufferPtr;
::SetCursorPos(20,20);
Successful = LogonUser ("super", ".", "super", LOGON32_LOGON_NETWORK, LOGON32_PROVIDER_DEFAULT, &AccessToken);

r00d0034@yahoo.com

Re: return sucessfully.but?

Anders Molin22-Nov-02 10:14

Anders Molin

22-Nov-02 10:14

there are plenty of examples in MSDN that shows you how to implement that stuff...

- Anders

Money talks, but all mine ever says is "Goodbye!"

Group Members and Logon

Richard Hudson22-Nov-02 5:08

Richard Hudson

22-Nov-02 5:08

I posted a threaad earlier on, but I still have probs

I need to enter a username, password and domain. Then it needs
to validate this info from a server (permissions, privileges,
groups etc..).

The code below works fine to logon to windows, but I need to check whether a user is part of a particular group? CAn anyone shed any light into the matter.

int AttemptLogon()
{
HANDLE hUser;
TOKEN_STATISTICS TStats;
TOKEN_GROUPS * pGroups;
PSID pLogonSid;
PLUID pLogonId;
HANDLE hUserToken;
DWORD size;
MiniAccount stAccount;

pLogonId = new LUID;
pLogonSid = new SID;

strcpy(stAccount.szUsername, "eric");
strcpy(stAccount.szDomain, "cognitronics");
strcpy(stAccount.szPassword, "");

if (LogonUser( (LPTSTR)stAccount.szUsername,
(LPTSTR)stAccount.szDomain,
(LPTSTR)stAccount.szPassword,
LOGON32_LOGON_INTERACTIVE,
LOGON32_PROVIDER_DEFAULT,
&hUser))
{
hUserToken = hUser;

//
// Now, grovel the token we got back for interesting

stuff:
//

GetTokenInformation(hUser,
TokenStatistics,
&TStats,
sizeof(TStats),
&size);

*pLogonId = TStats.AuthenticationId;

pGroups = (TOKEN_GROUPS*)LocalAlloc(LMEM_FIXED, 1024);

if (!pGroups)
{
CloseHandle(hUser);
return(WLX_SAS_ACTION_NONE);
}

//
// The tricky part. We need to get the Logon SID from

the token,
// since that is what Winlogon will use to protect the

windowstation
// and desktop.
//

GetTokenInformation(hUser,
TokenGroups,
pGroups,
1024,
&size);

if (size > 1024)
{
pGroups = (TOKEN_GROUPS*)LocalReAlloc(pGroups,

LMEM_FIXED, size);
GetTokenInformation(hUser,
TokenGroups,
pGroups,
size,
&size);
}

int n = pGroups->GroupCount;
for (int i = 0; i < pGroups->GroupCount ; i++)
{
if ((pGroups->Groups[i].Attributes &

SE_GROUP_LOGON_ID) == SE_GROUP_LOGON_ID)
{
CopySid(GetLengthSid(pLogonSid),
pLogonSid,
pGroups->Groups[i].Sid );
break;
}
}

LocalFree(pGroups);

return(WLX_SAS_ACTION_LOGON);
}

delete pLogonId;
delete pLogonSid;

int nLastError = GetLastError();

return(WLX_SAS_ACTION_NONE);
}

Does anyone have any ideas or sample source code.
Thankyou for your time Smile | :)

Rich

Re: Group Members and Logon

imran_rafique22-Nov-02 5:40

imran_rafique

22-Nov-02 5:40

sorry for Inconveniences.
but plz solve my problem.

you say?

The code below works fine to logon to windows, but I need to check whether a user is part of a particular group? CAn anyone shed any light into the matter.

but the important thing for me is that you say
"The code below works fine to logon to windows"

did desktop appears after using this code please ans the above thread thats my question?
i will be very thank full to you.

r00d0034@yahoo.com

Re: Group Members and Logon

Anders Molin22-Nov-02 10:11

Anders Molin

22-Nov-02 10:11

Richard Hudson wrote:
The code below works fine to logon to windows, but I need to check whether a user is part of a particular group? CAn anyone shed any light into the matter.

You can use some of the net* functions to check to see if a user is in a group.

I'm sorry, but I don't remember the exact function right now... Blush | :O

- Anders

Money talks, but all mine ever says is "Goodbye!"

plz see code and solve my problem?

imran_rafique22-Nov-02 5:05

imran_rafique

22-Nov-02 5:05

when we are at logoff state in professional xp a window is displayed having a window text
-------------------
LOG ON TO WINDOW
-------------------
that window has two edit box one for username and other for password i want to get the hwnd of these edit box and want to type username and password and click a button
and the code i have used for this purpose is this

POINT pt;
::GetCursorPos(&pt);
HWND h=::WindowFromPoint(pt);
-----------------------------------------
for typing some characters i use this code
-----------------------------------------

::SendMessage(h, WM_CHAR, (WPARAM) 's', (LPARAM) 0);
::Sleep(300);
::SendMessage(h, WM_CHAR, (WPARAM) 'u', (LPARAM) 0);
::Sleep(300);
::SendMessage(h, WM_CHAR, (WPARAM) 'p', (LPARAM) 0);
::Sleep(300);
::SendMessage(h, WM_CHAR, (WPARAM) 'e', (LPARAM) 0);
::Sleep(300);
::SendMessage(h, WM_CHAR, (WPARAM) 'r', (LPARAM) 0);
-----------------------------------------------
for clicking purpose i use this code

::SendMessage(h,WM_LBUTTONDOWN,0,0);
::SendMessage(h,WM_LBUTTONDOWN,0,0);
::Sleep(300);
::SendMessage(h,WM_LBUTTONUP,0,0);

i get mouse position when mouse is at one of the edit box and button of that window.

that code executed at any other window sucessfully but it does not execute at this(described above)window.

what to do ?
is there any change in logic ?

r00d0034@yahoo.com

Re: plz see code and solve my problem?

Daniel Turini22-Nov-02 5:16

Daniel Turini

22-Nov-02 5:16

What you need is the mouse_event or the SendInput functions.

[edit]Oops, sorry:
I think that for security reasons you can't control nor send events to the Logon window. I don't recall a reference right now...
[/edit]

My latest article:
SQL Server DO's and DONT's[^]

Re: plz see code and solve my problem?

Joan M22-Nov-02 6:37

Joan M

22-Nov-02 6:37

If you want to get access to the logon screen you must perform this inside a GINA.DLL. programatically it's impossible to get access to the logon screen if you don't do it from that DLL.

You can create a gina dll and make this... take a look at the msdn for more info.

(I've never done it, but I have readen something because some time ago I was interested in something similar...)

Hope this helps...

VS6 IDE "hangs"

Nitron22-Nov-02 4:27

Nitron

22-Nov-02 4:27

My project has been "hanging" lately on rebuilds using VS6... Confused | :confused:

Like right now, it's:

Generating Code...
Creating library...

And no CPU is being used in task manager?!?! If I Cancel build, it locks up and I can't terminate the process via the task manager because it thinks the program is being "debugged" Unsure | :~

So the only thing I can do is kill the power Dead | X|

I am using VS6 SP3. I can't use SP5 (or 6?) because some of our libraries expose many bugs in those SP's. Anyone have a clue?

P.S. I'm compiling across the network. I'm going to try to copy the project to my local machine next. But our network is fine, and plenty fast...

- Nitron

"Those that say a task is impossible shouldn't interrupt the ones who are doing it." - Chinese Proverb

Re: VS6 IDE "hangs"

Michael P Butler22-Nov-02 4:41

Michael P Butler

22-Nov-02 4:41

It's not a COM project that you are compiling is it?

Michael

Life’s not a song.
Life isn’t bliss.
Life is just this.
It’s living. -- Buffy the Vampire Slayer: Once more, with feeling

Re: VS6 IDE "hangs"

Nitron22-Nov-02 4:51

Nitron

22-Nov-02 4:51

No. I'm using this zip library[^] and some 3rd-party ActiveX controls[^]. Strangly enough, it seems I have winamp playing and outlook open when it will do it.... I copied the project to my local machine and deleted all the .obj stuff and the .ncb file, rebooted the machine, and the rebuild worked. I feel it's just a matter of time before it does it again...

What's the deal with COM prj? Can it be related? Does ActiveX use COM at all (i wouldn't think so)? Also, why would it be so wishy-washy? You would think if something's wrong, it would hang all the time... I'm keeping track of the clues. Does anything sound fishy to u?

- Nitron

"Those that say a task is impossible shouldn't interrupt the ones who are doing it." - Chinese Proverb

Re: VS6 IDE "hangs"

Michael P Butler22-Nov-02 5:02

Michael P Butler

22-Nov-02 5:02

I had a similar problem when the compiler tried to register the COM project. I had some dodgy code in the COM objects start-up code which prevented the COM object being registered by the compiler. Took me an age to fix it.

Although by the sound of it, it's more likely to be something else.

Michael

Life’s not a song.
Life isn’t bliss.
Life is just this.
It’s living. -- Buffy the Vampire Slayer: Once more, with feeling

Invalid floating operation

Patje22-Nov-02 4:19

Patje

22-Nov-02 4:19

Using VC6, SP? (probably 3, I'm not sure).
If we compile too much modules of our application with debug (/Od /Zi), then we get a floating-point invalid operation in a specific routine of our application. Recompiling that routine without debug (or with debug) does not seem to help.
Only if we recompile everything without debug again (/Ox /Oy-) the application runs correctly again.

If it crashes it always crashes in the same location, and it would even crash on the following source then:

double d1;<br />
double d2;<br />
d1 = 0.0;<br />
d2 = d1 + 1.0;

I've now upgraded to SP5 (hope the problem doesn't occur anymore), but I would like to know if this is a know problem or if anyone of you have encountered this problem too.

Btw, how can you see which Service Pack of Visual C++ is installed? Our system manager couldn't find it out either.

Thanks.

font color=#ff0000>Enjoy life, this is not a rehearsal !!!

Excel grids?

-Dy22-Nov-02 4:10

-Dy

22-Nov-02 4:10

[also posted in the COM forum - not sure which forum is more appropriate]

Hi all,

Can anyone point me in the right direction of information about using the Excel grid in a VC++/MFC app? I'm just looking to get the grid on a view / dialog, maybe manipulate some rows / columns (via code), etc.

Is this even doable? Confused | :confused:

Dylan

"In meetings, the person who is least competent usually does the most talking. Talking is a direct substitute for competence, at least in the minds of other people. Five minutes after you leave a meeting, you won't remember what anyone said but you will remember who did most of the talking. Withing a day your mind will translate that into a notion that the talker was unusually knowledgeable" - Scott Adams, Dilbert and the way of the weasel

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