Re: How to avoid this? (HTMLView and Handle leaks) - C / C++ / MFC Discussion Boards

Re: How to avoid this? (HTMLView and Handle leaks)

Joan M20-Mar-03 22:09

20-Mar-03 22:09

I thought this, but when I try to get the document the lpdispatch is not ready...

I would not do this if I would know how to create and attach a document to the CHTMLView...

But meanwhile...
Time to say that the HTMLView is not a normal HTMLView...
It's a HTMLCtrl, a wrapper class written by Paul DiLascia that makes possible to insert a HTMLView inside a dialog.
But before posting the question here in CP, I wrote down to Mr. DiLascia in order to ask him about it and his answer was that it must be a error of the MFC because his class was just a wrapper...

If you want I can try to send you a little sample code in order to make easier to talk about the problem...

What do you think about me sending you a little sample of this?

If you don't want to receive my little sample (with all the needed modifications), you can also download his article and source codes from his site at: http://www.microsoft.com/msj/0100/c++/c++0100.asp[^]

Note:
The DiLascia's article doesn't modify dynamically the web page contents.

Thanks a lot in advance for your time and help.

Re: How to avoid this? (HTMLView and Handle leaks)

Stephane Rodriguez.20-Mar-03 22:31

Stephane Rodriguez.

20-Mar-03 22:31

Ok then, to spend as little time as possible with the handle leak issue, the first thing to do is to isolate the code. This is a general debugging rule, and it translates in your particular case by trying to reproduce the behaviour with a simple CHtmlView class.
Good luck!

Re: How to avoid this? (HTMLView and Handle leaks)

Joan M20-Mar-03 22:53

Joan M

20-Mar-03 22:53

I have a little sample ready, can I send it to you? it's really simple:
2 dialogs and 3 buttons...

What do you think about it?

Thank you in advance.

Re: How to avoid this? (HTMLView and Handle leaks)

Joan M20-Mar-03 22:59

Joan M

20-Mar-03 22:59

Hello,

I'd like to tell you that I'm very sorry to annoy you with my problems... I don't like to do it, but I need to solve those problems as fast as I can... the program is now installed in an industrial PC that controls a machine and after some hours the PC crashes...

I hope that after seeing the little program you'll be able to tell me how stupid I've been to pass a surely easy thing...

As I said before (in other post) I'm dealing with those pointers and HTML for first time...

Thank you in advance, and please, if you don't want me to send you the sample, feel free to tell it to me, you've been trying to help me for a long time and I don't want to annoy you more...

Re: How to avoid this? (HTMLView and Handle leaks)

Joan M21-Mar-03 4:05

Joan M

21-Mar-03 4:05

Hello, I've written down (and posted) an article on how to place HTML inside a dialog (from Paul DiLascia) and how to change it dynamically, it is about what I've been asking you those days...

Would you be so kind to take a look at it? you could download the demo project and see what happens directly...

this is the direction of the article: http://www.codeproject.com/useritems/HTMLCtrlSample.asp[^]

Thank you in advance.

Re: How to avoid this? (HTMLView and Handle leaks)

Neville Franks20-Mar-03 9:34

Neville Franks

20-Mar-03 9:34

Joan,
Can you explain what you are trying to accomplish in step 3. Is this just to give you a blank html page to work with or ...??

Neville Franks, Author of ED for Windows. www.getsoft.com
Make money with our new Affilate program

Re: How to avoid this? (HTMLView and Handle leaks)

Joan M20-Mar-03 19:45

Joan M

20-Mar-03 19:45

In step 1 or 2 I make the browser to load a blank page in order to be able to work with it (create a new page).

In step 3 I modify the contents of the newly created HTML page using a CString that contains the code that I want to appear inside the HTML page.

Then, as I don't know how to tell the HTMLView to create a new HTML page to work with it, I make the HMLView to navigate to a blank page (steps 1 or 2) and then I modify this page (step 3).

hope this clarify what I'm trying to do...

Thank you for your interest.

Re: How to avoid this? (HTMLView and Handle leaks)

Neville Franks21-Mar-03 0:29

Neville Franks

21-Mar-03 0:29

Hi Joan,
Another simpler way to replace your page is as follows:
1) In your blank page add an id attribue to the body tag. eg:
<body id="mybody">

2) The use this code:

MSHTML::IHTMLDocument2Ptr pDoc( GetHtmlDocument() );
MSHTML::IHTMLElementPtr e;
e = pDoc->Getall()->item( _T("mybody") );
if ( e != NULL  )
{
    e->PutinnerHTML( (LPCSTR)sYourString.GetBuffer() );
    sYourString.ReleaseBuffer();
}

This replaces all the html between the open and close body tags. It should do what you want.

Neville Franks, Author of ED for Windows. www.getsoft.com
Make money with our new Affilate program

Re: How to avoid this? (HTMLView and Handle leaks)

Joan M21-Mar-03 1:15

Joan M

21-Mar-03 1:15

the problem (I think) is that I'm not using CHTMLView in an ordinary view, I'm doing it in a dialog...

Do you mean that I should do this in the creation?

this->Navigate2(_T("about:<html><body id=\"mybody\"></body></html>"), navNoHistory);

I'm prepairing an article about this but I would like to catch the handle that is being missed...

Could I send you a little demo project prepared to reproduce the problem only pressing two keys?

Then you would be able to see exactly what is happening...

Thank you in advance...

Re: How to avoid this? (HTMLView and Handle leaks)

Joan M21-Mar-03 3:56

Joan M

21-Mar-03 3:56

Wenn printing the fill function doesn't work

willempipi20-Mar-03 7:40

willempipi

20-Mar-03 7:40

hi,

I have this problem that wenn i begin printing a drawing with Visual C++ it doesn't fill a rectangle. i just use the function:

<br />
void CRSARuitLocaties::SelectPrintRuit(CDC *dc, CRect r, FLOAT Factor, int Ruitnr)<br />
{<br />
	m_strFilter.Format("Nr = %d", Ruitnr);<br />
	Open();<br />
<br />
	int x,y;<br />
<br />
	CBrush* brush;<br />
	CBrush* oldBrush;<br />
<br />
	brush = new CBrush(RGB(255,0,0));<br />
<br />
	while(!IsEOF())<br />
	{<br />
		oldBrush = dc->SelectObject(brush);<br />
<br />
		x = r.left + (m_xmiddel / Factor);<br />
		y = r.top - (m_ymiddel / Factor);<br />
		<br />
		dc->FloodFill(x, y, RGB(0,0,0));<br />
		dc->SelectObject(oldBrush);<br />
		MoveNext();		<br />
	}<br />
<br />
	delete brush;<br />
<br />
	Close();<br />
}<br />

the locations are right, i've checked...

Re: Wenn printing the fill function doesn't work

C^hris L^osinger20-Mar-03 8:03

C^hris L^osinger

20-Mar-03 8:03

not all devices support FloodFill. see CDC::GetDeviceCaps(RC_FLOODFILL);

-c

Image tools: ThumbNailer, Bobber, TIFFAssembler

Re: Wenn printing the fill function doesn't work

willempipi20-Mar-03 8:33

willempipi

20-Mar-03 8:33

solution/other function?

serialize

dudic20-Mar-03 7:13

dudic

20-Mar-03 7:13

my problem is:
I have a file, where I write some data(for example name, description, date). and I have to delete one record. how do I have to do this?

Re: serialize

Anonymous20-Mar-03 8:20

Anonymous

20-Mar-03 8:20

Using C or C++ functions?
How are u writing to the file

Anyway consider using fseek or CFile:Seek and be sure u dont open in append mode

Re: serialize

dudic20-Mar-03 8:25

dudic

20-Mar-03 8:25

I am writing like this:
"ses" is my serializable class
I want to save "name" and "date"
ses.Add(name);
ses.Add(date);
and after I am writing into the file.
mode "write".

trapping the enter key

ns20-Mar-03 6:58

20-Mar-03 6:58

I have two modeless dialogs (two different classes). Each has a textbox. I want to see when the user pressed Enter - SO I overrride OnCommand() in both of the CDialogs. Now if I press enter in the Dilaog#1 textbox, the OnCommnad of that class will run. But wil the OnCommnad of the other class run too? Or does the message (WM_COMMAND) generated on pressing Enter pertain only to the window in which the enter key was pressed?

Appreciate your help,
ns

Re: trapping the enter key

Maximilien20-Mar-03 7:14

Maximilien

20-Mar-03 7:14

You can you PreTranslateMessage defined in each dialog class.

BOOL CYourClass::PreTranslateMessage( MSG* pMsg )
{
  if ( (pMsg->message == WM_KEYDOWN) && (pMsg->wParam == VK_RETURN)  )
  {
   // do something.
    return TRUE;
  }
      
 return CYourBaseClass::PreTranslateMessage(pMsg);	

}

Max.

Maximilien Lincourt
For success one must aquire one's self

okay. Thanks

ns20-Mar-03 7:16

20-Mar-03 7:16

Thank you! I will try it.

Appreciate your help,
ns

works great!

ns20-Mar-03 8:03

20-Mar-03 8:03

Exactly what I needed.

Appreciate your help,
ns

File input without whitespace

georgiek5020-Mar-03 6:50

georgiek50

20-Mar-03 6:50

Is it possible to use get to read a file in as a string without the whitespace characters.

I have done this effectively by using >> and a loop but I was wondering if I could do it with get.

btw I have called File.setf(ios::skipws) without success.

Re: File input without whitespace

Christian Graus20-Mar-03 10:17

Christian Graus

20-Mar-03 10:17

>> will skip whitespace, otherwise you should use getline and then remove the whitespace afterwards. Or you could create your own inserter which does not read whitespace. iostreams has no inserter for CString, so if you're using MFC, just write it for CString and all will be well.

Christian

NO MATTER HOW MUCH BIG IS THE WORD SIZE ,THE DATA MUCT BE TRANSPORTED INTO THE CPU. - Vinod Sharma

Anonymous wrote:
OK. I read a c++ book. Or...a bit of it anyway. I'm sick of that evil looking console window.

I think you are a good candidate for Visual Basic. - Nemanja Trifunovic

Re: File input without whitespace

georgiek5020-Mar-03 12:11

georgiek50

20-Mar-03 12:11

Thanks for the info, I guess I'll stick to >> and my while loop...

Correct syntax for add and move methods for worksheet object

rvicta20-Mar-03 6:38

rvicta

20-Mar-03 6:38

I would appreciate it if someone could give me the correct syntax (or parameters) to use on the add method of the worksheets object. I have an application where I am doing Excel automation. I have been able to add data to the three existing worksheets but when I try to add a fourth sheet to the end I get a method failure message. If I use 'vtMissing' for all four parameters of the add method, the new worksheet gets added to the beginning. I then tried to use the move method, but I get a method failure error if I try to put the sheet number that I want to move after.

VC++ 5
Oracle ODBC
ADO
Excel 2000

Adjusting SPDemo

Spamdogg20-Mar-03 6:33

Spamdogg

20-Mar-03 6:33

Hello

Per a few suggestions I have looked for and found one of the splitter demos on this site. As I have mentioned before I am very new to Visual C++. The splitter demo I found is at the following location: http://www.codeproject.com/splitter/SimpleDlgSplitter.asp

I am looking over it and would like to know how I can change it to have two windows side by side and how to chnage the left window so that it is dialog based. I have found the portion of the code to allow me to changethe size of the window. Any help that anyone can provide will be greatly appreciated as I embark on learning a new programming language.

Thanks
Spamdogg

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