C / C++ / MFC Discussion Boards

Re: ISAPI Filter and FTP

Bill Wilson13-May-02 10:03

Bill Wilson

13-May-02 10:03

No. I believe ISAPI only filters HTTP requests.

Hope this helps,
Bill

Re: ISAPI Filter and FTP

Ed K13-May-02 10:14

Ed K

13-May-02 10:14

Thanks...that is what I thought.

ed

'Love is an obsessive delusion that is cured by marriage.' Dr. Karl Bowman

Get IP address programatically ?

dlhson13-May-02 6:24

dlhson

13-May-02 6:24

How can I get IP address of any computers that connect to my computer through a CSocket variable ?

Ex: My computer run a program as a server, using a CSocket variable, listen to connection.
Client run a program connect to server at port 0 by a CSocket variable.
I want to get IP address of the client !
How to ?

Hung Son
A Vietnamese student
i-g.hypermart.net
dlhson2001@yahoo.com

Re: Get IP address programatically ?

Joaquín M López Muñoz13-May-02 7:38

Joaquín M López Muñoz

13-May-02 7:38

Use <a href="http://msdn.microsoft.com/library/en-us/winsock/wsapiref_8woi.asp">getpeername</a>.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

CAsyncSocket / CSocket In a Different Thread

alpha+13-May-02 5:56

alpha+

13-May-02 5:56

I want my app to open a TCP communication thread to work with a certain device, which is not "dumb" in a way it can receive commands and even transmit some data back to my app in its own time. So I created a static thread function inside my control class for this reason only.

But, when I was trying to work with CSocket/CAsyncSocket *inside* the thread's context - MFC started to throw unhandeled execptions at me. so just to check things up - I moved the socket handling code into the main thread/process, and it worked fine there.

again - ALL the socket handling (including object declaration, creation, connect, ect) was done within the thread.

so what's the problem? anyone?

thanks for your help.

Re: CAsyncSocket / CSocket In a Different Thread

Joaquín M López Muñoz13-May-02 7:42

Joaquín M López Muñoz

13-May-02 7:42

Are you using a worker thread created with AfxBeginThread and a AFX_THREADPROC? If so, I think you got to use your CSockets inside a CWinThread-derived object --use the second form of AfxBeginThread.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: CAsyncSocket / CSocket In a Different Thread

Jon Hulatt13-May-02 22:48

Jon Hulatt

13-May-02 22:48

I suffered this problem a lot, and managed to sort it out.

My app has CSmtpListener in the main thread.

I created:- class CSmtpThread : public CWinThread
and gave it a member var of class CSmtpSocket : public CAsyncSocket

Then in CSmtpListener::OnAccept :-

void CSmtpListener::OnAccept(int nErrorCode) 
{
	// wait for the semaphore & decrement it
	WaitForSingleObject(m_hConnCountSemaphore, INFINITE);

	// accept the socket connection
	CAsyncSocket s;
	Accept(s);
		
	// create a new UI Thread, suspended
	CSmtpThread *p_SmtpThread = (CSmtpThread *)	
				AfxBeginThread(RUNTIME_CLASS(CSmtpThread),
				THREAD_PRIORITY_NORMAL,
				0,
				CREATE_SUSPENDED,
				NULL);

	// setup the new thread
	p_SmtpThread->Setup( s.Detach(), m_hConnCountSemaphore);

	// resume the thread's execution
	p_SmtpThread->ResumeThread();
}

The CSmtpThread::Setup function stores my semaphore handle and socket handle. Then, The CSmtpThread::InitInstance() attaches the handle to the member socket.

I used semaphores to control the number of child threads: it works quite nicely becuase the listener will sit and wait until the number of children drops before accepting the connection.

Jon

Signature space for rent. Apply Within.

Proerty page / wizard

13-May-02 4:55

Hello,
I have a "Wizard / Property page" type dialog app.. I am having problems pulling information from an edit box on page 1 from page 3.. Anyone have any ideas? It's probably something dumb..

Thanks,
Rob

Rob

Re: Proerty page / wizard

dlhson13-May-02 6:53

dlhson

13-May-02 6:53

See some code in this page (section Dialog&Windows)
http://www.codeproject.com/dialog/wizard2000.asp

Hung Son
A Vietnamese student
i-g.hypermart.net
dlhson2001@yahoo.com

Re: Proerty page / wizard

14-May-02 6:01

The actual window control(s) are not created until you are on that page. Therefore, pull the data from member variables.

MFC and DirectDraw

Rage13-May-02 4:44

Rage

13-May-02 4:44

' anyone know if it is possible to use DirectDraw in windowed mode in a MFC application ?
What i would like to do is some graphic stuff whiere things could be triggered by the user clicking on buttons for example.

RaGe

Re: MFC and DirectDraw

Prem Kumar13-May-02 4:43

Prem Kumar

13-May-02 4:43

The wgl* functions act on rendering context which is initialized
as
HGLRC wglCreateContext(
HDC hdc // device context of device that the rendering context
// will be suitable for
);

so you need to initialize the rendering context and continue doing
your directdraw, and release the hdc when the window is getting destroyed.

Re: MFC and DirectDraw

Paul M Watt13-May-02 5:22

Paul M Watt

13-May-02 5:22

The wgl* functions are for OpenGL, which is completely separate from DirectDraw.

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!

Re: MFC and DirectDraw

Paul M Watt13-May-02 5:25

Paul M Watt

13-May-02 5:25

Why yes it is possible.

In fact, if you have the DirectX 8.1 SDK, there are a ton of sample programs included on this disk, three of which are MFC specific examples. Also, there is a base framework that you can use to develop MFC applications in both windowed and full screen mode.

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!

Re: MFC and DirectDraw

Rage13-May-02 5:32

Rage

13-May-02 5:32

Actually , I´m running my application under windows NT 4.0, but i´ve have not find any directX 8.1 SDK running under this OS ( for sure i´m such a lame i did not understand how the microsoft download "search" works Smile | :)

). In my MSDN (6.0), there is only a few examples running in Win32 apllication but without MFC Hmmm | :|

(Well, MSDN and DirectX 8.1 SDK are not the same thing, I know) ... Meantime, I actually managed to display something even if it is still not what i want, but i´m sure it will eventually work Big Grin | :-D

Anyway, thanks for your help.

RaGe
Unfortunately, brute-force solutions tend to be slow
even when performed by modern-day microcomputers,
which are capable of several MIPS except when I'm late
for an appointment and want to finish a compile and
run just one more test before I leave, in which case
the crystal in my computer is apparently designed to
automatically revert to 1 Hz.
-- Michael Abrash

Re: MFC and DirectDraw

l a u r e n13-May-02 7:16

l a u r e n

13-May-02 7:16

Rage wrote:
Unfortunately, brute-force solutions tend to be slow
even when performed by modern-day microcomputers,
which are capable of several MIPS except when I'm late
for an appointment and want to finish a compile and
run just one more test before I leave, in which case
the crystal in my computer is apparently designed to
automatically revert to 1 Hz.
-- Michael Abrash

anybody who quotes michael abrash is cool by me
Suspicious | :suss:

"... and so i said to him ... if it don't dance and you can't eat it either f**k it or throw it away"
sonork: 100.18128 8028finder.com

HBITMAP -> CStatic

13-May-02 4:38

I'm able to load a bitmap into a HBITMAP. I want to put that HBITMAP on a CStatic control. Does anybody know the steps to take to make that happen?

Thanks

Re: HBITMAP -> CStatic

Michael P Butler13-May-02 5:08

Michael P Butler

13-May-02 5:08

Look at

CStatic::SetBitmap and LoadImage

Michael Smile | :)

Re: HBITMAP -> CStatic

13-May-02 7:42

Sorry, I guess I should have also noted that I was able to get this far. The last piece is to resize the bitmap to the size of the CStatic control. Do you know how to do that?

Thanks

Re: HBITMAP -> CStatic

Paul M Watt13-May-02 7:59

Paul M Watt

13-May-02 7:59

You will have to create a second bitmap that is the size of your CStatic control, as well as two memory DCs to select your HBITMAPs into, then use StretchBlt to adjust the size of your first bitmap. When this is done, destroy your memory DCs, and you will have two HBITMAPs.

One that is the original HBITMAP, and the second that is the same size as the CStatic control. This is the bitmap that you want to use to set to your control.

Good Luck.

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!

process handles

confalonieri13-May-02 4:04

confalonieri

13-May-02 4:04

Hi,

In my application, I get the ID of another process, and I'd like to get all the handles owned by this extern process. Does anybody know how to proceed ?

Thanks,
Robin.

set max size of program

jafrazee13-May-02 3:47

jafrazee

13-May-02 3:47

is there a way to set the max size that a program/dialog can open. example 800x600. my application is an mdi app.
thank you.

Re: set max size of program

Alexandru Savescu13-May-02 3:58

Alexandru Savescu

13-May-02 3:58

Try to catch the WM_SIZE message and from there call SetWindowPos function to set a maximum size of your frame windows

Best regards,
Alexandru Savescu

Re: set max size of program

Prem Kumar13-May-02 4:01

Prem Kumar

13-May-02 4:01

The WM_SIZE is sent after the size has been changed, so
you will get a flicker if you resize then.

Re: set max size of program

Prem Kumar13-May-02 3:53

Prem Kumar

13-May-02 3:53

If you are looking at restricting even if the user wants to resize the appilcation
to maximum size, you should not probably, in this case only dialogs can help.

But if you want a work around for this probably
indicating a thin border for your FrameWnd and explicitly
disabling the System Menu SC_MAXIMIZE might help.

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.