C / C++ / MFC

29-Oct-01 19:46

- How to change one font to another system-defined font?

- How to restore a font ?

- Can you help?

-Regards,
Maer

Christian Graus29-Oct-01 23:24

Christian Graus

29-Oct-01 23:24

Where do you want to change the font ? System wide ? In a control ?

Christian

After all, there's nothing wrong with an elite as long as I'm allowed to be part of it!! - Mike Burston Oct 23, 2001

Maer72729-Oct-01 23:47

29-Oct-01 23:47

- Thanks pal!

- I simply want to get the general codes for changing font. It is not for specific use.

- Can you help? Can you show me an example?

-Regards,
Maer

Jonathan de Halleux30-Oct-01 0:32

Jonathan de Halleux

30-Oct-01 0:32

Try this article,

Automatic Font Handling Class in Fonts & GDI >> GDI Objects

Jonathan de Halleux, Belgium.

Maer72731-Oct-01 1:34

31-Oct-01 1:34

- Thanks pal!

- Your reply clarifies my doubts.

- Regards,
Maer

about "TLS"

Maer72729-Oct-01 19:28

29-Oct-01 19:28

- From MSDN it is said,
... A call to TlsAlloc() returns a global TLS index. This one TLS index is valid for every thread within the process that allocated it ...
... when TlsAlloc() is called, every thread within the process has its own private ULONG_PTR-sized space reserved for it (in its stack space, but this is implementation-specific) ...

- Suppose in a case, when thread A1 loads Dll B, and Dll B allocates a TLS in thread A1. And there are 2 threads in process P, thread A1 and thread A2. So when Dll B allocates a TLS in thread A1, thread A2 is also allocated a TLS with the same index. So we have 2 TLSs with the same index now.

- Am I right? But I think the TLS in thread A2 is useless place. (Suppose only thread A1 access Dll B)

- Can you help?

- Best regards,
Maer

Re: about "TLS"

Steen Krogsgaard29-Oct-01 22:20

Steen Krogsgaard

29-Oct-01 22:20

Basically, you're right. The TLS slot alloated in A2 is useless if A2 does not use the same data items as A1.

The reason for this is this. Suppose you want to save the creation time for each thread in your process. And for the sake of completeness we can do the saving in a DLL. When the DLL loads it calls TlsAlloc and saves the returned index in a global variable (e.g. g_iTlsIndex). Now, as each thread is created it can save the creation time in the TLS slot with index g_iTlsIndex - the same index but a unique memory location for each thread. Of course, if your threads are totally unrelated and does totally different things they will probably not have the need for common TLS indices. But you got at least 64 TLS slots available, so you can use new one for each thread type.

TLS, DLLs and multithreading programming is described in great detail in Richters "Advanced Windows". I for (i=0; i<A_WHOLE_LOT;i++, printf("really ")); recommend you get a copy if you're doing MT programming. It's worth every dime.

Cheers
Steen.

"To claim that computer games influence children is rediculous. If Pacman had influenced children born in the 80'ies we would see a lot of youngsters running around in dark rooms eating pills while listening to monotonous music"

Re: about "TLS"

Steen Krogsgaard29-Oct-01 22:23

Steen Krogsgaard

29-Oct-01 22:23

DAMN, I though the code tag would allow me to write greater-than an less-than characters! Anyway, the last paragraph should read:

TLS, DLLs and multithreading programming is described in great detail in Richter's "Advanced Windows". I really really recommend that you get a copy if you're doing MT programming. It's worth every dime.

Cheers
Steen.

"To claim that computer games influence children is rediculous. If Pacman had influenced children born in the 80'ies we would see a lot of youngsters running around in dark rooms eating pills while listening to monotonous music"

Re: about "TLS"

Maer72731-Oct-01 1:53

Handling system color change in OpenGL apps.

31-Oct-01 1:53

- Thanks pal!

- I still have a question. If I just use the function "TlsAlloc" and do not use the function "TlsSetValue", I think we just allocate an index and do not allocate a memory space to store value of variable.

- Am I right?

- Regards,
Maer

v_krishnan29-Oct-01 19:07

v_krishnan

29-Oct-01 19:07

Hi,

I have developed an MDI OpenGL App using MFC. It creates a scene and displays it after reading it from a file that stores the colors, etc. of each object in the scene. Now how do I handle change in color depth in runtime, because in my code I use glColor3f(R,G,B) to specify colors while drawing. So will this code work properly in 256 colors also. How will I handle changes to the palette etc.?

Thanks,
Krishnan

Dialogs inside MDI

Christopher Lord29-Oct-01 18:40

Christopher Lord

29-Oct-01 18:40

I have refined my previous question in the intrests of specificity.

I need to make an MDI application that supports two kinds of windows:

A: Standard view of a set of data (like an invoice or reciept)

B: Dialogs for adding items to said invoice

As well, I need to put a large bar along the top serving as a sort of summary, as well as commiting, clearing, or canceling the transaction, but I have a way to do this already.

My problem is, I need to know if there is a way to do item B. These must be modeless dialogs within the MDI region. MFC doc/view preferably. think photoshop toolwindows with the main view presenting the finished work. however, photoshop windows can escape the main window.

Another option I have been looking into is docking bars, but the best example I have found is here on code project, but only loads single controls... if these can load whole dialogs it would work.

any help would be most apreciated. Smile | :)

// Rock

Re: Dialogs inside MDI

Steen Krogsgaard29-Oct-01 22:26

Steen Krogsgaard

29-Oct-01 22:26

Use FormView for your "Dialogs". They are basically modeless dialogs hooked up to be views.

The "large bar along the top" could be implemented as a dialog bar, I think.

Cheers
Steen.

"To claim that computer games influence children is rediculous. If Pacman had influenced children born in the 80'ies we would see a lot of youngsters running around in dark rooms eating pills while listening to monotonous music"

About "Ctrl + ALT + DEL"

29-Oct-01 18:33

How to disable the "Ctrl + ALT + DEL" in Windows 2000? Eager for you help, any of your advice will be appreciate.

Michael Dunn29-Oct-01 21:23

Michael Dunn

29-Oct-01 21:23

You can't. The point of C-A-D is that it's secure because nothing can intercept it.

--Mike--
http://home.inreach.com/mdunn/
This posting is provided "as was" with no warranties, guarantees, lotteries, or any of those little bags of peanuts you get on planes. You assume all risk for crossing the street without holding mommy's hand. © 2001 Mike's Classy Software. Member FDIC. If rash develops, discontinue use.
Heart | [heart]

your

with

and

29-Oct-01 22:22

Yes, you can intercept Ctrl-Alt-Del on Windows NT & Windows 2000.

2 ways to do that:

. you can code your own gina.dll (this DLL is used to manage logon authentification). You can replace the original DLL with the registry key local_machine\microsoft\windows nt\winlogon\GinaDLL = mygina.dll (your dll must be in the system32 directory). You can find help at :
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/security/winlogon_portal_2hb9.asp

or you can use this source:
http://wwwthep.physik.uni-mainz.de/~frink/newgina_pre09/readme.html

The best way is to code a filter dll which loads the original one, and block the ctrl-alt-del event (in WlxLoggedOnSAS function) by returning WLX_SAS_ACTION_NONE. Be carreful because, if Windows doesn't find your dll or if you have a bug inside, your system will be blocked. This method works very well, but you'll have a flash when ctrl-alt-del will occur. It's a detail but we'll find the perfect code...

. your can also code a driver which intercept keyboard event (with msgkeybfilter i think Eek! | :eek:

?). In this case, no flash when you press ctrl-alt-del (i tested a software which uses this method and it completely block the ctrl-alt-del (no flash here !)).

Good luck !

Smile | :)

2-Nov-01 14:01

You can use the driver ctrl2cap from www.sysinternals.com. It switch change capslock key to left control key, but you can easily change the code to block ctrl-alt-del combination.

Cool | :cool: