Re: CAsynSocket CWinthread Question - C / C++ / MFC Discussion Boards

Re: time and space complexity?

CPallini6-Aug-09 10:21

CPallini

6-Aug-09 10:21

sam_psycho wrote:
Is their any standard formula to calculate time and space complexity

Oh, no : too complex, both in space and time. Big Grin | :-D

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Re: time and space complexity?

sam_psycho6-Aug-09 10:29

sam_psycho

6-Aug-09 10:29

CPallini wrote:
Oh, no : too complex, both in space and time. Big Grin

really? but I dont think it is toooooo complex... Laugh | :laugh:

Re: time and space complexity?

RomanMzh6-Aug-09 13:15

RomanMzh

6-Aug-09 13:15

Best bet is wiki

http://en.wikipedia.org/wiki/Computational_complexity_theory[^]

Re: time and space complexity?

Adam Roderick J6-Aug-09 17:48

Adam Roderick J

6-Aug-09 17:48

http://books.google.co.in/books?id=L_AMnf9UF9QC&printsec=frontcover&dq=Analysis+and+design+of+Algorithm&client=firefox-a#v=onepage&q=&f=false[^]

Величие не Бога может быть недооценена.

CAsynSocket CWinthread Question

ForNow6-Aug-09 6:39

ForNow

6-Aug-09 6:39

Hi,

I woud Like to Use the CAsynSocket CLass as Member of CWinThread

In My Main Cwinthread I would like to Have 4 pointers to My CWinThreadSAsynSocket CLass'es

My question is the Following On Initinstance of the main thread

I would like to inistantiate them with the "new" operators and save thier m_thread id's

I Know that since CAsynSocket notfies completion via messages these Thread will have to be

of the UI variety

So. my question is When I want to pass them (threads a socket) to do work

I would ::Create the connection/socket

then Detach my socket and have them Attach the Socket

How do Notify them

Can I leave them in a Suspended status and do a Resume when I want them to take off

or since they are UI threads with a message pump they constantly have to be looping

and then my way of notifying them would be with PostThreadMessage ????

thankx

Re: CAsynSocket CWinthread Question

sashoalm6-Aug-09 22:10

sashoalm

6-Aug-09 22:10

You shouldn't use Suspend/Resume, it has side effects, and it's meant to be used mostly by debuggers. It is better to use events[^].

There is sufficient light for those who desire to see, and there is sufficient darkness for those of a contrary disposition.
Blaise Pascal

Re: CAsynSocket CWinthread Question

ForNow7-Aug-09 1:02

ForNow

7-Aug-09 1:02

This however is a UI thread with a Message Pump as CasyncSOcket post notificatins via messages

is it SAFE for a message Pump Thread to Wait for event Notification ????

Re: CAsynSocket CWinthread Question

sashoalm7-Aug-09 1:50

sashoalm

7-Aug-09 1:50

I see your point. Well you can use MsgWaitForMultipleObjects[^], but even easier would be to use a user defined message instead of an event. One message to "start" and one message to "stop".

There is sufficient light for those who desire to see, and there is sufficient darkness for those of a contrary disposition.
Blaise Pascal

Re: CAsynSocket CWinthread Question

ForNow7-Aug-09 12:10

ForNow

7-Aug-09 12:10

Thankx

to Start CAsynSocketWinthread I can use PostMessageThread

I have to investigate and see how this works

In the Context of a Class or CWnd/Cdialog

thankx for the suggestion I will do some investigation

Re: CAsynSocket CWinthread Question

ForNow7-Aug-09 12:18

ForNow

7-Aug-09 12:18

Forgot that CWnd/CDialog I have use message maps

Again thankx let me inestigate

Re: CAsynSocket CWinthread Question

sashoalm8-Aug-09 1:15

sashoalm

8-Aug-09 1:15

It's something I did once when confronted with a similar problem. The code in your thread should look something like this pseudocode

if PeekMessage == MY_STOP_MESSAGE then
  if GetMessage != MY_RESUME_MESSAGE then repeat

See the documentation in MSDN about PeekMessage and GetMessage

There is sufficient light for those who desire to see, and there is sufficient darkness for those of a contrary disposition.
Blaise Pascal

Re: CAsynSocket CWinthread Question

ForNow9-Aug-09 2:35

ForNow

9-Aug-09 2:35

Hi,

Sorry about the Delay'ed reply I had to check out

MsgWaitForMultipleObjects

Since My Code is MFC using MESSAGE_MAPS

was wondering how to handle it

So...

I think I'll have to use the Overridable

CWnd/CDialog Windowproc

to get a first look at the messages before

they are dispatched to the message map

e.g

then if its a message I'll use Peekmessage to

Pull it off the queue

When I have both the Event set and the Message

I'll use the info pointed to by Lparm(which I

saved in some global) area to do my

processing

thankx

Re: CAsynSocket CWinthread Question

sashoalm9-Aug-09 23:01

sashoalm

9-Aug-09 23:01

Actually if you use PostThreadMessage you don't need to use MsgWaitForMultipleObjects, as you'll be using messages *instead of* events (hence no need to use MsgWaitForMultipleObjects to wait for events).

There is sufficient light for those who desire to see, and there is sufficient darkness for those of a contrary disposition.
Blaise Pascal

Re: CAsynSocket CWinthread Question

ForNow10-Aug-09 2:50

ForNow

10-Aug-09 2:50

excuse me as I am probably not understanding

First of I am waiting for a reply in a Cdialog??

MsgWaitForMultipleObjects seem to be a neat way to check on a event in a UI thread or in this case Cdialog

while keeping the message Pump moving

Re: CAsynSocket CWinthread Question

sashoalm10-Aug-09 4:31

sashoalm

10-Aug-09 4:31

Well yeah, but since you're already using a message pump, why not send a message instead of raising an event?

i.e. (from your sender thread)

PostThreadMessage MY_STOP_MESSAGE
....
PostThreadMessage MY_RESUME_MESSAGE

instead of

SetEvent MY_STOP_EVENT
....
SetEvent MY_RESUME_EVENT

There is sufficient light for those who desire to see, and there is sufficient darkness for those of a contrary disposition.
Blaise Pascal

Re: CAsynSocket CWinthread Question

ForNow10-Aug-09 12:34

ForNow

10-Aug-09 12:34

Yeah I understand

My two inputs one is from named pipes which I wait Overlapped.hEvent

and the other CAsynSocket

but you right I can wait for Multiple messages

thankx

pointer

kumarashoka6-Aug-09 2:31

kumarashoka

6-Aug-09 2:31

what is the meaning of that statement?
*((*ptr+1)+2)
if i can use double dimension array in the declaration like
a[2][2]={1,2,3,4,5}
{2,4,6,8,9}

Re: pointer

CPallini6-Aug-09 2:35

CPallini

6-Aug-09 2:35

kumarashoka wrote:
what is the meaning of that statement?
*((*ptr+1)+2)

Syntax error. Roll eyes | :rolleyes:

Please provide right context.
Smile | :)

Re: pointer

sam_psycho6-Aug-09 10:26

sam_psycho

6-Aug-09 10:26

u need this [^]

Re: pointer

David Crow6-Aug-09 10:36

David Crow

6-Aug-09 10:36

kumarashoka wrote:
a[2][2]={1,2,3,4,5}
{2,4,6,8,9}

To make this compilable, you'll need to make a larger and correct the syntax errors:

int a[2][5] =
{ 
    {1,2,3,4,5},
    {2,4,6,8,9}
};

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

how to disconnect from internet?

Joseph Marzbani6-Aug-09 2:11

Joseph Marzbani

6-Aug-09 2:11

I use a computer at work connecting to a group (local network). I wonder how can I disconnect it from the Internet by code?

Thank you masters!

Re: how to disconnect from internet? [modified]

Adam Roderick J6-Aug-09 17:58

Adam Roderick J

6-Aug-09 17:58

Just search on google man Smile | :)

clue:- INetConnectionManager in vc++

More clue:-
u need three interface to do that

INetConnection* pConnect
INetConnectionManager* pMgr
IEnumNetConnection* pEnum

Using pMgr->EnumConnections( NCME_DEFAULT, &pEnum ) get all the connection

Loop it and check whether "Local Area Connection" or what ever connection you want to check

and call pConnect->Disconnect() to disconnect your NIC.

Величие не Бога может быть недооценена.

modified on Friday, August 7, 2009 12:20 AM

Print Preview on Main frame in MDI Application

Harsh Shankar6-Aug-09 2:01

Harsh Shankar

6-Aug-09 2:01

Hi All,

I am working on VC2008's MDI application with Ribbon bar and have to provide print preview.

Now, However VC2008 do have print preview, but the client requires it to look it like the VC6.0's Print preview capturing the entire main frame along with some certain buttons, all like VC6.0.

Can some body please help me on it

HARSH

Programmers are in a race with the Universe to create bigger and better idiot-proof programs, while the Universe is trying to create bigger and better idiots. So far the Universe is winning.

Re: Print Preview on Main frame in MDI Application

sashoalm6-Aug-09 22:19

sashoalm

6-Aug-09 22:19

I'm not sure if it'll do what you want, but try this:
Find OnFilePrintPreview in your CView-derived class and replace its code with this:

void CYourViewDerivedClass::OnFilePrintPreview()
{
// 	AFXPrintPreview(this);


// 	ASSERT_VALID(pView);

	CPrintPreviewState *pState= new CPrintPreviewState;

	if (!DoPrintPreview(IDD_AFXBAR_RES_PRINT_PREVIEW, this, RUNTIME_CLASS(CPreviewView), pState))
	{
		TRACE0("Error: OnFilePrintPreview failed.\n");
		AfxMessageBox(AFX_IDP_COMMAND_FAILURE);
		delete pState;      // preview failed to initialize, delete State now
	}
}

There is sufficient light for those who desire to see, and there is sufficient darkness for those of a contrary disposition.
Blaise Pascal

Re: Print Preview on Main frame in MDI Application

Harsh Shankar6-Aug-09 22:42

Harsh Shankar

6-Aug-09 22:42

Hi sashoalm,

First thanks for replying...

I already know the way how to prepare print preview. But i guess i was not clear enough with my requirement.

My requirement is to show the preview capturing the entire main frame including all Menues, Panes, Views etc in VS 2008, how VS 6.0 does.

In VS2008, the preview comes like a view only and menues etc are remain enabled..

Please suggess something else may be that will help...

Thanks

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