C / C++ / MFC

Re: POST MESSAGE help needed

6-May-02 15:29

Anonymous wrote:
It works if I know the specific window to post the message to. How do I post the message so a class that is not known untill runtime can handle it?

If you have a valid HWND, then you can PostMessage to it.

Anonymous wrote:
Would it make more sense to store a CWnd* as member data for the window to send the message to?

If you prefer the MFC way, that might be an option depending on your design needs.

Nish

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6-May-02 15:39

I would rather post globally to the application so that any class can handle it. Is that possible?

In fact, I thought that was how the message maps worked. Guess I was mistaken.

Re: POST MESSAGE help needed

Nish Nishant6-May-02 17:16

6-May-02 17:16

Anonymous wrote:
I would rather post globally to the application so that any class can handle it. Is that possible?

Then you'd be better off, using PostThreadMessage

Nish

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Design Question

Matt Newman6-May-02 14:21

6-May-02 14:21

I am writing a web server and I tried making it a NT Service, it seems that it is isolated and cannot be accessed, does anybody have any ideas on how to fix this I would prefer not to have a window but I am willing to as a last resort use an icon in the system tray.

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Nish Nishant6-May-02 15:29

6-May-02 15:29

Are you using the MFC socket classes?

Nish

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Matt Newman6-May-02 16:05

6-May-02 16:05

It is a class that I believe is derived from MFC sockets.

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Nish Nishant6-May-02 17:15

6-May-02 17:15

I have had trouble with CSocket derived classes in services

Nish

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Matt Newman8-May-02 15:09

8-May-02 15:09

Bummer. I guess I will just have to settle for a taskbar icon Frown | :(

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Nish Nishant8-May-02 15:18

8-May-02 15:18

If you badly want to make it a service, you can use native Winsock instead of the MFC sockwet classes

Nish

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Matt Newman8-May-02 15:23

8-May-02 15:23

Nish [BusterBoy] wrote:
If you badly want to make it a service, you can use native Winsock instead of the MFC sockwet classes

I will plan to rewrite the classes as soon as I get a running version, I'll just make the service version then.

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Close Ports

Matt Newman6-May-02 13:34

6-May-02 13:34

How can I close a port progmatically? I want to close port X so when someone tries to access X it doesn't respond (like stealth mode).

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Nish Nishant6-May-02 15:31

6-May-02 15:31

Only if a socket is bound to a port can someone connect to it. If you simply close the listenbing socket, then you disable people from being able to connect to that port.

But then sometimes you want some people to have access to the port and to deny it for others. Thats when you use a firewall.

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Matt Newman6-May-02 16:04

6-May-02 16:04

Nish [BusterBoy] wrote:
Thats when you use a firewall.

I was kind of trying to make a simple firewall. I am not sure what the best way to do it is.

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Nish Nishant6-May-02 17:14

6-May-02 17:14

Matt Newman wrote:
I was kind of trying to make a simple firewall.

That's beyond what winsock can do. Firewalls involve packet capturing.

Nish

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Rickard Andersson²⁰6-May-02 20:42

Rickard Andersson²⁰

6-May-02 20:42

How to make a socket listen on a port!?

------------------------------------
Rickard Andersson, Suza Computing
ICQ#: 50302279
I'm from the winter country SWEDEN!

------------------------------------

Matt Newman8-May-02 15:10

8-May-02 15:10

Rickard Andersson wrote:
How to make a socket listen on a port!?

I was trying to completely block of access to unused ports.

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__int64 to string...

Matt Gullett6-May-02 13:30

Matt Gullett

6-May-02 13:30

I should know how to do this but for the life of me I can't find the answer. How do I convert an __int64 value to a string. TCHAR[XXX] or CString doesn't matter.

Christian Graus6-May-02 13:42

Christian Graus

6-May-02 13:42

I'd try using an ostringstream. It's a better alternative than CString::format or ( heaven forbid ) sprintf in any case.

I have an article on CP if you don't know how to use it.

Christian

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And you don't spend much time with the opposite sex working day and night, unless the pizza delivery person happens to be young, cute, single and female. I can assure you, I've consumed more than a programmer's allotment of pizza, and these conditions have never aligned. - Christopher Duncan - 18/04/2002

Matt Gullett6-May-02 16:48

Matt Gullett

6-May-02 16:48

Thanks for the feedback.

CString strTemp;
__int64 iValue = ULONG_MAX + ULONG_MAX;

strTemp.Format("%d", iValue);

This does not produce the correct result. It works for 32 bit numbers, but it does not appear to work for 64 bit numbers. I have not tried the STL solution, though. I will try it next time I get a chance.

I have solved the problem, though.

lucy6-May-02 16:37

lucy

6-May-02 16:37

Just as Chris said, you have a CString str; you can do a str.Format("%d", yourIntData);

Matt Gullett6-May-02 16:46

Matt Gullett

6-May-02 16:46

Thanks for the feedback.

CString strTemp;
__int64 iValue = ULONG_MAX + ULONG_MAX;

strTemp.Format("%d", iValue);

This does not produce the correct result. It works for 32 bit numbers, but it does not appear to work for 64 bit numbers.

I have solved the problem, though.