C / C++ / MFC

Re: uninstall and start menu

29-Nov-02 18:46

norm wrote:
does "InstallShield" does UN-installation for you?

Of course it does. And it even removes registry entries you make via the installer Smile | :)

Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

devvvy29-Nov-02 21:49

devvvy

29-Nov-02 21:49

anyway, my installer/uninstaller has just been completed =)

well, at least the beta version. the licening module is missing, but the baby is ready for beta testing.

since i am pretty much the guy responsible for this part, any suggestion will be greatly appreciated Poke tongue | ;-P

as for licencing, it's pretty standard architecture. user enter a number at the installer. the installer writes the licence number (encrypted-symmetric key) in registry. Everytime the COM server runs, it loads a licence list from disk - content of which is also encrypted. Then the COM server compare the entry in registry (user entered it to registry earlier) and search the list and see if can find a match. if it does, bingo. if it doesnt, the COM server will refuse any call.

the one big problem is: u have a static licence list sitting on the disk drive. it's encrypted. but the fact that it's static means that at one point u may run out of licence number from the list.

thanks!

norm

If then statement help

Mustanggt29-Nov-02 18:04

Mustanggt

29-Nov-02 18:04

Hi, new to the C++ language, and trying to write a small program that will allow for a number input and be able to tell if it is numeric or something else. IE input number 1 - will accept, input a letter B will bomb out. Got the if then statement, but cannot figure out the rest. If someone can give me a hit it would be appreciated!

Thanks a bunch.
Smile | :)

Nish Nishant29-Nov-02 18:17

29-Nov-02 18:17

if(isdigit(num))
{
    //okay
}
else
{
    //error
}

Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Christian Graus29-Nov-02 18:42

Christian Graus

29-Nov-02 18:42

Cool - I did not know that. I've been using isalpha and isalnum to figure it out.

Christian

No offense, but I don't really want to encourage the creation of another VB developer. - Larry Antram 22 Oct 2002

Hey, at least Logo had, at it's inception, a mechanical turtle. VB has always lacked even that... - Shog9 04-09-2002

Again, you can screw up a C/C++ program just as easily as a VB program. OK, maybe not as easily, but it's certainly doable. - Jamie Nordmeyer - 15-Nov-2002

Nish Nishant29-Nov-02 18:49

29-Nov-02 18:49

Christian Graus wrote:
Cool - I did not know that. I've been using isalpha and isalnum to figure it out.

I am absolutely ecstatic and delighted about the fact that I now belong to that sparsely populated club of people who can lay claim to having taught Christian Graus something about the C/C++ run time library.

Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Christian Graus30-Nov-02 10:23

Christian Graus

30-Nov-02 10:23

*grin* It's not that sparse, especially when it comes to the C run time library.

Christian

No offense, but I don't really want to encourage the creation of another VB developer. - Larry Antram 22 Oct 2002

Hey, at least Logo had, at it's inception, a mechanical turtle. VB has always lacked even that... - Shog9 04-09-2002

Again, you can screw up a C/C++ program just as easily as a VB program. OK, maybe not as easily, but it's certainly doable. - Jamie Nordmeyer - 15-Nov-2002

SMTP for PocketPC

joji29-Nov-02 16:47

joji

29-Nov-02 16:47

Dear Everyone,

First of all,I would like to apologize for posting question
that may not be related to this forum.
I have been working on PocketPC email client software for quite
along time.Eventhough there are many examples on SMTP classes for Windows
(Visual C++) but until now, I still can't find a SMTP class for PocketPC(Embedded Visual C++ 3.0).Besides that, I heard that PockePC doesn't suppport
smtp feature.Is that true?However, there is a software which I think, uses smtp to send email.Please refer to
http://www.talksender.com/product/download/index.html
for details.
I am thinking of creating my own mailing software(just for sending only)
on PocketPC.Does anyone have any idea or suggestion on this topic?
I would be glad to hear anything for all of you.

Thanks you very much.

From Joji.

Joji

Re: SMTP for PocketPC

Anders Molin30-Nov-02 8:00

Anders Molin

30-Nov-02 8:00

You can use sockets on the Pocket PC, and then you can also make a SMTP program, because it uses sockets to talk to a SMTP server.

If you don't wanna write all the SMTP stuff yourself, I guess that a lot of the samples you can find also works in eMbedded Visual C++.

- Anders

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

Page/byte alignment?

Matt Gullett29-Nov-02 15:19

Matt Gullett

29-Nov-02 15:19

I have a class which manages byte buffers and TCHAR buffers. The class has an Initialize method which is used to allocate a new buffer (or use an existing one of suffecient size) of bytes or TCHARs. The buffer it allocates is always at least as big as the size requested. What I want to do is insure that the buffer allocated is allocated page and byte aligned.

What is the page size for x86 platform? Is it 4K??? Is this the correct way to deal with this?

int CMyBuffer::Initialize(const long lRequestedSize)
{
   int iReturn = NO_ERROR;

   long lAllocSize = (lRequestedSize + (lRequestedSize % 4000));

   .. bla bla bla ...

   return iReturn;
}

Mike Nordell29-Nov-02 16:34

Mike Nordell

29-Nov-02 16:34

The page size if usually 4KB, though you can get 4MB (8MB?) pages also.

The way you deal with this is often a combination of VirtualAlloc, and common sense. Smile | :)

Besides, your faulty assumption that 4KB == 4000 bytes displays you don't really know computers yet. I (in a friendly way) suggest you study some more binary arithmetics, and perhaps CS in general.

Matt Gullett29-Nov-02 16:41

Matt Gullett

29-Nov-02 16:41

Mike Nordell wrote:
The page size if usually 4KB, though you can get 4MB (8MB?) pages also.

Is this true on x86 platforms? I thought page size was hardware determined and that Intel used a 4k size for all its processors. If this is not true, where can I find more info on this.

Mike Nordell wrote:
4KB == 4000

Oops! I was just typing in an example. I realize that 4k == 4048 er.no. 4096. (EDIT: Damn I'm sleep this evening.)

Mike Nordell29-Nov-02 20:40

Mike Nordell

29-Nov-02 20:40

Matt Gullett wrote:
Is this true on x86 platforms?

Yes, otherwise I wouldn't have mentioned it.

For user-mode Win32 programs you can safely assume 4KB pages (trust me, it's been like this for a decade).

But e.g. NT 5.1 (WinXP) allegedly uses the larger pagesize (be it 4MB or 8MB or whatever it is) in particular cases (and I believe at the same time throwing everything what was known as R/O-protection of kernel code down the drain) for kernel-mode. This is however discussed at other sites (such as MSDN and its mag.).

Michael Dunn29-Nov-02 16:55

Michael Dunn

29-Nov-02 16:55

Don't hard-code the size, but instead call GetSystemInfo() - one of the pieces of info you get is the page size.

--Mike--
"Adventure. Excitement. A Jedi craves not these things."
-- Silent Bob

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Re: Sending Paste Message

Matt Gullett29-Nov-02 16:57

Matt Gullett

29-Nov-02 16:57

Perfect. Exactly what I was looking for.

Thanks.

Matt Gullett

Sending Paste Message

Gilfrog29-Nov-02 14:11

Gilfrog

29-Nov-02 14:11

I am having trouble sending a paste message to windows in visual studio, word and excel. Sending the wm_paste message seems to work on normal edit controls and rich edit controls but not these others.

I get the window with focus and send it a wm_paste message. Are these different type of window's, should i send them a ctrl-v message? If so how do i send that message, Send a wm_keydown for v, but how do i say the ctrl is pressed.

Thanks
Scott

Gilfrog30-Nov-02 13:20

Gilfrog

30-Nov-02 13:20

I can send the keydown for v but my main question now is

How to set the state of the control key to be pressed when i send the keydown message?

Scott

Random Numbers

Steven M Hunt29-Nov-02 14:06

Steven M Hunt

29-Nov-02 14:06

I am trying to create one of those tip dialog boxes for my program and I want C++ to show random tips. Can I get C++ to "pick" a number in a range of numbers? I know how to do that in JavaScript but that doesn't help me much here.

-- Steve

Nish Nishant29-Nov-02 15:28

29-Nov-02 15:28

This might help a little :-

int _tmain(int argc, _TCHAR* argv[])
{
    //display 10 numbers between 0 and 9
    srand(time(NULL));
    for(int i=0; i<10; i++)
    {
        int r = (int)(((double)rand()/(double)RAND_MAX) * (double)10);
        printf("%d\r\n",r);
    }
    return 0;
}

Regards,
Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Steven M Hunt29-Nov-02 17:34

Steven M Hunt

29-Nov-02 17:34

That line of code you gave me keeps returning 0 and just using the rand() function keeps returning 41. Isn't that strange?

-- Steve

Paul M Watt29-Nov-02 17:39

Paul M Watt

29-Nov-02 17:39

SteveBob wrote:
just using the rand() function keeps returning 41. Isn't that strange?

It will always return the same sequence of numbers because rand() is a psuedo-random number generator. The way you can get around this problem is by seeding the number generator the first time you use it with a value that always changes, like the current time.

Try something like this:

srand(time());

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!

Nish Nishant29-Nov-02 18:12

29-Nov-02 18:12

Paul Watt wrote:
Try something like this:

srand(time());

The code snippet I gave him already does that! I think he didn't copy/paste it properly.

Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Steven M Hunt29-Nov-02 18:18

Steven M Hunt

29-Nov-02 18:18

Thanks! That fixed the problem!

-- Steve

Nish Nishant29-Nov-02 18:10