Re: Getting a text from an HTML format - C / C++ / MFC Discussion Boards

Shamoon15-Aug-02 8:26

15-Aug-02 8:26

This question is related to TCP socket server. Suppose client and server are running on different machines of the network. What happens if the client machine improperly shutdown or its network cable is removed. Is there any way that server determine that the client socket is no longer valid ????

Re: Sockets related

Ryan B.15-Aug-02 8:41

Ryan B.

15-Aug-02 8:41

You can use a timeout period. If the server does not receive a message from the client within an alloted time period then you can shutdown the socket.

Or you can use a "PING" method along with the timeout. The server can send a message to the client (or client to the server) every once in a while in a "You there?" "Yes I am here" fashion.

Ryan Baillargeon
Software Specialist
Fuel Cell Technologies Inc.

Re: Sockets related

lucy15-Aug-02 8:57

lucy

15-Aug-02 8:57

I believe when you do a read in this case, it will return ERROR immediately.

Re: Sockets related

Anders Molin15-Aug-02 9:58

Anders Molin

15-Aug-02 9:58

The server socket returns an error, and if you use async socket you get an "event" when it happens.

TCP is a "connected" socket, so you'll never be able to send to a not connected socket when using TCP...

- Anders

Money talks, but all mine ever says is "Goodbye!"

Re: Aha !

Masaaki Onishi15-Aug-02 18:01

Masaaki Onishi

15-Aug-02 18:01

Hello, the codegurus around the world.;)

This is my guess, so I don't know this is right.

If the client closes the socket, WinSock will send "close" message
to the server without any codes on TCP as long as I remember. Dead | X|

As a result, if WinSock can't deal with closing the socket, Server
don't know what is going on the client. Eek! | :eek:

But TCP establishes the connection, Server knows the client IP address and
port number. So, Server can post something like "alive" message to some
inteval time to the client. Cool | :cool:

Please, don't send me your email about your questions directly.
Have a nice day!
Sonork - 100.10571:vcdeveloper Wink | ;)

-Masaaki Onishi-

Getting a text from an HTML format

Atlence15-Aug-02 8:03

Atlence

15-Aug-02 8:03

Hi!

I'm using the new Visual C++ .NET controls which allow to edit and create HTLM document (CHTMLEditCtrl class).

Is it possible to obtain the text from the control without formating and without HTML tags?
For example, obtaining "Texte" from Texte.

Thks in advance!
Appstmd

Re: Getting a text from an HTML format

Ranjan Banerji15-Aug-02 10:16

Ranjan Banerji

15-Aug-02 10:16

Use XML/XSL technologies. You may be able to load the HTML into a DOMDocument. If u can then extract the information.

Re: Getting a text from an HTML format

Ravi Bhavnani15-Aug-02 11:42

Ravi Bhavnani

15-Aug-02 11:42

You can use the removeHtml() method from my Web Resource Provider article[^].

/ravi

Let's put "civil" back in "civilization"
http://www.ravib.com
ravib@ravib.com

Can't figure out Icons for CTreeCtrl

brianwelsch15-Aug-02 7:44

brianwelsch

15-Aug-02 7:44

Hey there,
Can someone help me to get icons associated with a tree ctrl, please?
I have a tree control displaying a project/sub-project file structure, and I would like to add an icon to each leaf based on a certain condition.
The icons are resources, and not to be associated with other apps or anything.
thanks for your help!

BW
{insert witty/thought-provoking saying here}

Re: Can't figure out Icons for CTreeCtrl

Tomasz Sowinski15-Aug-02 7:47

Tomasz Sowinski

15-Aug-02 7:47

You'll have to set treectrl's image list first. Usually, you create a small bitmap containing all icons and load it with a call to CImageList::Create, but you can also create image list from icons.

Check the docs for CImageList, CTreeCtrl::SetImageList and CTreeCtrl::SetItemImage.

Tomasz Sowinski -- http://www.shooltz.com

Never argue with an idiot, he'll bring you to his level and beat you with experience.

Re: Can't figure out Icons for CTreeCtrl

brianwelsch15-Aug-02 7:49

brianwelsch

15-Aug-02 7:49

Gracias!

BW
{insert witty/thought-provoking saying here}

Re: Can't figure out Icons for CTreeCtrl

Tomasz Sowinski15-Aug-02 7:52

Tomasz Sowinski

15-Aug-02 7:52

De nada.

Tomasz Sowinski -- http://www.shooltz.com

Never argue with an idiot, he'll bring you to his level and beat you with experience.

MSDN example code generates hard-coded brekapoint.

redeemer15-Aug-02 7:20

redeemer

15-Aug-02 7:20

I just tried to run some code i got directly from MSDN, non-modified, but at the acmFormatChoose line it gives me a message about a "breakpoint called from code at 0xXXXXXX", anyone have a clue what's wrong?

MMRESULT            mmr; 
ACMFORMATCHOOSE     afc; 
WAVEFORMATEX        wfxSelection; 
WAVEFORMATEX        wfxEnum; 
 
// Initialize the ACMFORMATCHOOSE members. 
memset(&afc, 0, sizeof(afc)); 
 
afc.cbStruct    = sizeof(afc); 
afc.fdwStyle    = 0L;               // no special style flags 
afc.hwndOwner   = ghWnd;             // hwnd of parent window 
afc.pwfx        = &wfxSelection;    // wfx to receive selection 
afc.cbwfx       = sizeof(wfxSelection); 
afc.pszTitle    = TEXT("16 Bit PCM Selection"); 
 
//  Request that all 16-bit PCM formats be displayed for the user 
//  to select from. 
memset(&wfxEnum, 0, sizeof(wfxEnum)); 

wfxEnum.wFormatTag = WAVE_FORMAT_PCM; 
wfxEnum.wBitsPerSample = 16;

afc.fdwEnum = ACM_FORMATENUMF_WFORMATTAG | ACM_FORMATENUMF_WBITSPERSAMPLE; 
afc.pwfxEnum = &wfxEnum; 

mmr = acmFormatChoose(&afc); 
if ((MMSYSERR_NOERROR != mmr) && (ACMERR_CANCELED != mmr)) 
{ 
    // There was a fatal error in bringing up the list 
    // dialog box (probably invalid input parameters). 
}

Thankyou in advance.

-Rune Svendsen

Re: MSDN example code generates hard-coded brekapoint.

Tomasz Sowinski15-Aug-02 7:32

Tomasz Sowinski

15-Aug-02 7:32

What is wfxEnum?

Tomasz Sowinski -- http://www.shooltz.com

Never argue with an idiot, he'll bring you to his level and beat you with experience.

Re: MSDN example code generates hard-coded brekapoint.

redeemer15-Aug-02 9:07

redeemer

15-Aug-02 9:07

It's a WAVEFORMATEX structure used to restrict the formats showed, so only 16-bits per sample formats are showed in the list.

Re: MSDN example code generates hard-coded brekapoint.

Tomasz Sowinski15-Aug-02 9:09

Tomasz Sowinski

15-Aug-02 9:09

Sorry - I haven't noticed the declaration and was sure that this is your callback. If you want, send me your sources, I'll try to compile/run.

Tomasz Sowinski -- http://www.shooltz.com

Never argue with an idiot, he'll bring you to his level and beat you with experience.

Re: MSDN example code generates hard-coded brekapoint.

redeemer15-Aug-02 9:15

redeemer

15-Aug-02 9:15

Sure, can i get your email address?

Re: MSDN example code generates hard-coded brekapoint.

Tomasz Sowinski15-Aug-02 9:17

Tomasz Sowinski

15-Aug-02 9:17

Its in the notification messages sent to you by CP server.

Tomasz Sowinski -- http://www.shooltz.com

Never argue with an idiot, he'll bring you to his level and beat you with experience.

Re: MSDN example code generates hard-coded brekapoint.

redeemer15-Aug-02 9:22

redeemer

15-Aug-02 9:22

Are they sent to my email or what? cause my email address is runes@hotpop.com

How to open project files in my app, like in Visual Studio

Jake Palmer15-Aug-02 6:59

Jake Palmer

15-Aug-02 6:59

My goal is similar to how Visual Studio opens Project and Workspace files: those file types are associated with VS, but they don't open up Views in the middle of the screen, they just fill in some information. I want to imitate this for opening Projects in my application. Unsure | :~

Are they using a doc/hidden view for this, or something tricky? WTF | :WTF:

Any suggestions are appreciated.
thanks,
Jake

Re: How to open project files in my app, like in Visual Studio

Roman Fadeyev15-Aug-02 7:08

Roman Fadeyev

15-Aug-02 7:08

It's very simple

Override InitialUpdateFrame in your DocTemplate like that

void CProjectDocTemplate::InitialUpdateFrame(CFrameWnd* pFrame, CDocument* pDoc,BOOL bMakeVisible)
{
  __super :: InitialUpdateFrame(pFrame, pDoc, /*!!!!*/false);
}

Moreover, you can even write so:

void CProjectDocTemplate::InitialUpdateFrame(CFrameWnd* pFrame, CDocument* pDoc,BOOL bMakeVisible)
{
	pFrame->DestroyWindow();
}

just set m_bAutoDelete to false in CYourDocument class before (constructor is the best place for it).

Re: How to open project files in my app, like in Visual Studio

Jake Palmer15-Aug-02 8:35

Jake Palmer

15-Aug-02 8:35

Sounds great, but I am just using CMultiDocTemplates in my code. I tried to make a subclass and override InitialUpdateFrame, but I get errors with the constructor, because CMultiDocTemplate has no default constructor. It doesn't seem like MFC wants DocTemplates to be subclassed, since we can't create them in the New Class wizard. So, how did you get that CProjectDocTemplate class?
thanks,
Jake

Re: How to open project files in my app, like in Visual Studio

Roman Fadeyev15-Aug-02 19:10

Roman Fadeyev

15-Aug-02 19:10

Jake Palmer wrote:
Sounds great, but I am just using CMultiDocTemplates in my code.

It does not matter. Look:

class CProjectDocTemplate : public CMultiDocTemplate  
{
public:
    CProjectDocTemplate ( UINT nIDResource, CRuntimeClass* pDocClass, CRuntimeClass* pFrameClass, CRuntimeClass* pViewClass );
...
}

CProjectDocTemplate ::CProjectDocTemplate ( UINT nIDResource, CRuntimeClass* pDocClass, CRuntimeClass* pFrameClass, CRuntimeClass* pViewClass ):
    CMultiDocTemplate(nIDResource, pDocClass, pFrameClass, pViewClass)

{
}
....
// ------- CXXXApp.InitInstance() --------//
    AddDocTemplate( new CProjectDocTemplate(
        IDR_DOC_PROJECT,
        RUNTIME_CLASS(CProjectDoc),      // document class
        RUNTIME_CLASS(CMDIChildWnd),        // frame class
        RUNTIME_CLASS(CProjectView)     // view class
        ));

Where is the problem?

Re: How to open project files in my app, like in Visual Studio

Jake Palmer16-Aug-02 9:46

Jake Palmer

16-Aug-02 9:46

I found a solution: returning FALSE in my document's OnOpenDocument. I get to deal with the file the user opened, but then I don't have to mess around with a doc or view hanging around. How come nobody told me about that? Cool | :cool:

Jake

CTreeCtrl Problem

Jonah15-Aug-02 6:49

Jonah

15-Aug-02 6:49

I am using a CTreeCtrl in my dialog based application, and I'm experiencing a really annoying problem with it. I should note that the "Check Boxes" style is being used with this tree control, and seems to be part of the problem.

When my dialog opens for the first time, I do not populate the tree control right away (the user does this later). However, a horizontal scroll bar shows up at the bottom of the tree control. From the looks of it, it would appear that an item with a *very* long name exists in the tree control. But I do a DeleteAllItems() during initialization, and the scroll bar still shows up!

I've noticed that if I manually insert some children, *AFTER* I do a DeleteAllItems(), the scroll bar does not show up (unless needed). But if I insert these children without first doing a DeleteAllItems(), the scroll bar shows up (needed or not). Could this be an indication that the TVI_ROOT item is starting with some garbage in it and needs to be properly initialized? If that's the case, how do I go about doing that?

I want the scroll bar to be available if needed, just not when the list is empty. Any ideas on how to fix this incredibly annoying problem are most welcome. Smile | :)

Thanks,
Jonah

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