Re: Detecting multiple partitions on the same hard drive - C / C++ / MFC Discussion Boards

Re: how to set radio button to be checked?

redeemer13-May-02 9:17

redeemer

13-May-02 9:17

You can use the BM_SETCHECK message:

SendMessage( 
  (HWND) hWnd,              // handle to destination window 
  BM_SETCHECK,              // message to send
  (WPARAM) wParam;          // check state
  (LPARAM) lParam;          // not used; must be zero
);

Re: how to set radio button to be checked?

Michael Dunn13-May-02 10:26

Michael Dunn

13-May-02 10:26

CheckRadioButton() is the best way - it checks one button and unchecks all others in the group.

--Mike--
Buy me stuff!
Like the Google toolbar? Then check out UltraBar, with more features & customizable search engines!
My really out-of-date homepage
Big fan of Alyson Hannigan and Jamie Salé.
Sonork - 100.10414 AcidHelm

class fstream and dll

Dan Verret13-May-02 8:05

Dan Verret

13-May-02 8:05

I have created a dll in which I use the following linkage interface:

#ifdef CONSOLEDLL_EXPORTS
#define CONSOLEDLL_API __declspec(dllexport)
#else
#define CONSOLEDLL_API __declspec(dllimport)
#endif

every classes have been declared like this:

class CONSOLEDLL_API CCenteredStepEdger : public CStepObject{
friend CONSOLEDLL_API ostream& operator <<( ... );
friend CONSOLEDLL_API istream& operator >>( ... );
...

and some of the classes use fstream type variables:

fstream m_File;

when I compile the project, I have the following warning:

class 'fstream' needs to have dll-interface to be used by clients of class 'CCenteredStepEdger '

How should I specify the dll-interface for the fstream variables???

Thanks

Daniel Verret

Detecting multiple partitions on the same hard drive

Wes Jones13-May-02 7:19

Wes Jones

13-May-02 7:19

I'd like to know how I can find out if two drive letters refer to partitions on the same hard drive.

I'm working on a database backup utility, & I want to discourage users from selecting the same physical hard drive for their backups as the hard drive where their 'live database' is running.

ie: If "C:\LiveDatabases" and "D:\My Backups" are actually located on the same physical harddrive(on different partitions), I'd like to know how to determine this info.

Thanks!

Wes

Sonork ID 100.14017 wtheronjones

Re: Detecting multiple partitions on the same hard drive

redeemer13-May-02 9:43

redeemer

13-May-02 9:43

Try checking out this site: http://www.users.intercom.com/~ranish/part/primer.htm

Re: Detecting multiple partitions on the same hard drive

Wes Jones13-May-02 13:16

Wes Jones

13-May-02 13:16

Thanks for the informative link, but I'm looking for API's that I'd be able to use to figure this out.

Thanks!
-Wes

Sonork ID 100.14017 wtheronjones

Re: Detecting multiple partitions on the same hard drive

Jason Henderson13-May-02 17:21

Jason Henderson

13-May-02 17:21

Not sure if this will give you the right info, but check out the GetVolumeInformation function on MSDN and the lpVolumeSerialNumber parameter.

Like it or not, I'm right.

Re: Detecting multiple partitions on the same hard drive

Wes Jones13-May-02 18:03

Wes Jones

13-May-02 18:03

I thought might be it, but I hadn't tested it yet...
thanks!
Wes

Sonork ID 100.14017 wtheronjones

ISAPI Filter and FTP

Ed K13-May-02 6:45

Ed K

13-May-02 6:45

Can an ISAPI Filter be used to catch content being sent to an FTP site?

Thanks,

ed

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

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

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