Re: Program Auto-updating Itself - C / C++ / MFC Discussion Boards

Christian Graus22-Jan-02 11:27

22-Jan-02 11:27

Use GetLastStatus, it will tell you if the last action returns Ok or Fail.

I agree - the docs have a long way to go.

Christian

I have come to clean zee pooollll. - Michael Martin Dec 30, 2001

Sonork ID 100.10002:MeanManOzI live in Bob's HungOut now

When to Detach a async socket

tfElep22-Jan-02 10:01

tfElep

22-Jan-02 10:01

I Detach() an async socket in CAsyncSocket::OnClose(). When the connection is broken by the remote host, it works rather well. But when I close the connection manually by CAsyncSocket::Close(), the callback function OnClose() will not be called, and Detach() will not be called either. I tried to call Detach() soon after my call to Close(), an ASSERTation was the result. Detach() befroe Close() doesn't work either. What should I do to release the handle of this CAsyncSocket and reuse it with lose of resources again? Thanks for your help.

Tiny Flying Elephant
I love flying...

Dumb Question?

22-Jan-02 9:37

I was asked by a friend of mine what would happen if someone put this code into the onpaint() function of a program.
((word)-1);
I tried it and got nothing. Is nothing supposed to happen?

Re: Dumb Question?

Christian Graus22-Jan-02 9:55

Christian Graus

22-Jan-02 9:55

You create a variable, and don't use it or store it, so it immediately goes out of scope. No, nothing should happen.

I dunno what word is though, do you mean WORD ? WORD is an unsigned short, but the cast would make the -1 equal the highest possible value for a WORD, which is 65535. That's because signed values use the high bit to switch between +ve and -ve.

Christian

I have come to clean zee pooollll. - Michael Martin Dec 30, 2001

Sonork ID 100.10002:MeanManOzI live in Bob's HungOut now

Re: Dumb Question?

22-Jan-02 10:04

Thanks Christian, I appreciate it.

IE Download Dlg

BLaZiNiX22-Jan-02 8:39

BLaZiNiX

22-Jan-02 8:39

I created a browser using CHtmlView and I want to know how can I override the IE Download Dlg to my own one ?

BLaZiNiX

Program Auto-updating Itself

Jason Hooper22-Jan-02 8:38

Jason Hooper

22-Jan-02 8:38

How do programs get new versions of themselves from the internet and automatically upgrade themselves? Isn't the .EXE protected from being overwritten? How can your program change itself if it is running? Oh the questions...

Suspicious | :suss:

-Jason
nirgle.bitdevil.com
SonorkID: 100.12194

Re: Program Auto-updating Itself

Carlos Antollini22-Jan-02 9:00

Carlos Antollini

22-Jan-02 9:00

It's Easy, you need a Program that Check the Versions That you are running
with the Version in the Server...
I do this...
When you start your application, you start the versionchecker,
If the Version in the server is greater than your App version, this program down the new version, and run the app in your machine, if the verision that you have is the same, directly run the app in your machine... It's Easy

Best Regards!!!
I Heart | [heart]

and CP

Hip!!! Sorry

Carlos Antollini.
Sonork ID 100.10529 cantollini

Re: Program Auto-updating Itself

Jason Hooper22-Jan-02 9:17

Jason Hooper

22-Jan-02 9:17

Such an obvious and simple solution that I never even thought of it Smile | :)

Thanks!

- Jason
SonorkID: 100.12194
's your uncle

Re: Program Auto-updating Itself

Jason Hooper22-Jan-02 9:22

Jason Hooper

22-Jan-02 9:22

Hmm... how about the uninstall program deleting ITSELF??? OH! Hit me with another under-my-noser.

Smile | :)

- Jason
SonorkID: 100.12194
's your uncle

Re: Program Auto-updating Itself

yarp22-Jan-02 9:42

yarp

22-Jan-02 9:42

LOL... but the solution exists. There's an auto deleting .exe sample here at CodeProject or CodeGuru (don't remind exactly).
It's a recent article I saw in december or November.

Yarp

.make files???

Kuniva22-Jan-02 8:12

Kuniva

22-Jan-02 8:12

What are .make/.mak files for??? I always saw them in some c/c++ project but i have no idea what they are actually for, can anyone explain?

Kuniva
--------------------------------------------
God gave man a penis and a brain but not enough blood to make both of 'em work at the same time.

Re: .make files???

borland22-Jan-02 17:05

borland

22-Jan-02 17:05

if you've ever done ANY C++ programming outside of VC then you'll know all about makefiles.

They are the text-based equivalent of your project options. They tell the compiler (gcc/++ in most cases) what files to compile and how to compile each one, etc etc

: Wherever you go, there you are, and you wish you were somewhere else :

SendInput

Mark Donkers22-Jan-02 8:14

Mark Donkers

22-Jan-02 8:14

Does anyone have a solid example on how use SendInput(). All the examples that are out there, are in VB.

Also, see my memcpy() statements. Am I copying a structure into a structure of a structure properly?

<br />
    BOOL fNumLockState;<br />
    BYTE keys[255];<br />
    INPUT inp[2];<br />
    KEYBDINPUT kbi;<br />
<br />
<br />
    GetKeyboardState( keys );<br />
    <br />
    // NumLock handling:<br />
    fNumLockState = keys[VK_NUMLOCK];<br />
    if( !fNumLockState ) // Turn numlock on<br />
    {    <br />
        kbi.wVk         = VK_NUMLOCK;<br />
        kbi.wScan       = 0;  // not needed<br />
        kbi.dwFlags     = 0;  // press the key down<br />
        kbi.time        = 0;  // use the default<br />
        kbi.dwExtraInfo = 0;  // not needed<br />
        <br />
        memcpy( &(inp[0].ki), &kbi, sizeof(kbi) );<br />
        inp[0].type     = INPUT_KEYBOARD;<br />
        <br />
        kbi.dwFlags     = KEYEVENTF_KEYUP;      // release  the key down<br />
        <br />
        memcpy( &(inp[1].ki), &kbi, sizeof(kbi) );<br />
        inp[1].type     = INPUT_KEYBOARD;<br />
        <br />
        if( SendInput( 2, inp, sizeof(inp) ) != 2 )<br />
        {<br />
            TRACE(_T("SendInput error [%d]"), GetLastError() );<br />
        }                <br />
    }                <br />

Marcus

Make no little plans; they have no magic to stir your blood to action. Make big plans, aim high in work and hope
-- Daniel Burnham

Re: SendInput

Mark Donkers22-Jan-02 10:48

Mark Donkers

22-Jan-02 10:48

figured it out...

the line:
if( SendInput( 2, inp, sizeof(inp) ) != 2 )

should be...
if( SendInput( 2, inp, sizeof(INPUT) ) != 2 )

Marcus

Make no little plans; they have no magic to stir your blood to action. Make big plans, aim high in work and hope
-- Daniel Burnham

getting a machine's ip address

Kuniva22-Jan-02 5:45

Kuniva

22-Jan-02 5:45

Hi, i need the function to get a machine's ip address. I remember there was a simple function for this without MFC allthough it doesn't really matter if its with MFC or not. I just forgot it and cant find it anymore. So i'd be thankful if someone could tell me. Many thanks.

Kuniva
--------------------------------------------
God gave man a penis and a brain but not enough blood to make both of 'em work at the same time.

Re: getting a machine's ip address

Jon Sagara22-Jan-02 6:00

Jon Sagara

22-Jan-02 6:00

Someone post this link in another post.

Jon Sagara

What about ?

Re: getting a machine's ip address

Vladimir Georgiev22-Jan-02 6:01

Vladimir Georgiev

22-Jan-02 6:01

gethostbyname()

"Needless redundancy is the hobgoblin of software engineering." - Peter Darnell

Re: getting a machine's ip address

Kuniva22-Jan-02 6:45

Kuniva

22-Jan-02 6:45

erh... this is gonna sound silly but how do i convert a const char* to a CString??? I guess working with CStrings all the time has kind of killed my knowledge of chars and pointers...
Thanks again for your answer.

Kuniva
--------------------------------------------
God gave man a penis and a brain but not enough blood to make both of 'em work at the same time.

Re: getting a machine's ip address

Mark Donkers22-Jan-02 8:36

Mark Donkers

22-Jan-02 8:36

CString strText;
strText.Format(_T("%s"), szString);

Marcus

Make no little plans; they have no magic to stir your blood to action. Make big plans, aim high in work and hope
-- Daniel Burnham

Re: getting a machine's ip address

22-Jan-02 11:28

or more simply....

CString strText(szString);

John

Re: getting a machine's ip address

borland22-Jan-02 11:54

borland

22-Jan-02 11:54

you can just go CString str = (some char*) and it'll work

: Wherever you go, there you are, and you wish you were somewhere else :

MP3 player

bh_bad200222-Jan-02 5:28

bh_bad2002

22-Jan-02 5:28

I am trying to start off and make an MP3 player using DirectX. But i need to know where to start. If anybody can give me anyhelp on getting started on this small project it would be greatly appreciated. OMG | :OMG:

thebh_bad

Re: MP3 player

Christian Graus22-Jan-02 9:59

Christian Graus

22-Jan-02 9:59

There's full source on CP, look for MPEG and you'll find the article. It's in C though, so it only allows one song played at a time ( it's all done using global variables and functions ). There's plenty of info on mp3 decoding on the net, just fire up google and search for 'mp3 c++ source'.

Christian

I have come to clean zee pooollll. - Michael Martin Dec 30, 2001

Sonork ID 100.10002:MeanManOzI live in Bob's HungOut now

An easy one for any seasoned pro....

Paul Barrass22-Jan-02 5:08

Paul Barrass

22-Jan-02 5:08

Hi everyone,

I need to programatically mute the volume of the soundcard in a machine (just like clicking on the volume control icon in the tray.

Anybody know a quick way of doing this?

Cheers,

Paul

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