C / C++ / MFC

Re: Adding 2 very long numbers ?!

7-Mar-04 10:12

use __int64 for big numbers, for very big numbers you have to code an own lib.

Don't try it, just do it! Wink | ;-)

Jörgen Sigvardsson7-Mar-04 11:58

Jörgen Sigvardsson

7-Mar-04 11:58

OLE/COM DECIMALs can hold 96 bit numbers. Take a look at the docs in MSDN.

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Sound In an App

mavgoose7-Mar-04 9:16

mavgoose

7-Mar-04 9:16

How is it possible to get a program to play Midi \ Wav file when a button is pressed? I need my application to include 2-3 sound files which can be played when a button is pressed is this possible? if so how. And how do you display a bitmap on a button? OMG | :OMG:

Re: Sound In an App

Mazdak7-Mar-04 9:39

7-Mar-04 9:39

mavgoose wrote:
And how do you display a bitmap on a button?

Search Botton control in this site and find lots if exampls.

mavgoose wrote:
How is it possible to get a program to play Midi \ Wav file when a button is pressed?

Look into Audio part of this site.

Mazy

"A bank is a place that will lend you money if you can prove that you don't need it." - Bob Hope

Re: Sound In an App

Alexander ^M.,7-Mar-04 10:13

7-Mar-04 10:13

sndPlaySound API

Don't try it, just do it! Wink | ;-)

Re: Sound In an App

Curi0us_George7-Mar-04 15:56

Curi0us_George

7-Mar-04 15:56

The simplest way to play an audio file on windows is to use the PlaySound function.
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/multimed/htm/_win32_playsound.asp

Putting a bitmap on a button? Depends on whether you're using mfc, wtl, win32 api, .net or something else. There's probably a dozen tutorials on this site alone explaining it, though.

Compiler Option

Mazdak7-Mar-04 8:41

7-Mar-04 8:41

I have an username & password inside my exe file. I opened it with notepad and saw they are in pain text somewhere inside it. Somebody told me that there is an compiler option that encrypt variables or something like this. Is there such a thing exist or he sucks?

Mazy

"A bank is a place that will lend you money if you can prove that you don't need it." - Bob Hope

Alexander ^M.,7-Mar-04 10:19

7-Mar-04 10:19

nothing like that... encrypt it using a PE crypter or just save the MD5(or other) hash of the password.

Don't try it, just do it! Wink | ;-)

Mazdak7-Mar-04 10:23

7-Mar-04 10:23

Alexander M. wrote:
encrypt it using a PE crypter or just save the MD5(or other) hash of the password

Well, then the Key is visible and could be decrypted, but of course with a little more job.

Mazy

"A bank is a place that will lend you money if you can prove that you don't need it." - Bob Hope

Alexander ^M.,7-Mar-04 10:56

7-Mar-04 10:56

no chance to decode MD5

Don't try it, just do it! Wink | ;-)

Michael Dunn7-Mar-04 10:27

Michael Dunn

7-Mar-04 10:27

Not a compiler option, but check out http://www.codeproject.com/string/cxr.asp[^] which is a great compile-time tool to encrypt literals. I use it in several of my apps.

--Mike--
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Mazdak7-Mar-04 18:53

7-Mar-04 18:53

Thanks Mike and others for reply. Smile | :)

Mazy

"A bank is a place that will lend you money if you can prove that you don't need it." - Bob Hope

Gary R. Wheeler7-Mar-04 10:54

Gary R. Wheeler

7-Mar-04 10:54

As far as I know, there is no such compiler option. Your 'somebody' may have been thinking of an option to obfuscate .NET code.

Software Zen: delete this;

Curi0us_George7-Mar-04 15:39

Curi0us_George

7-Mar-04 15:39

If you embed a password directly into an exe, it will be insecure. You can play with it to make it less obvious (e.g. XOR against some other non-secret value), but nothing you can do will actually make it secure. If the exe has access to the password, so does anyone who has the exe.