its working!!!! - C / C++ / MFC Discussion Boards

Tomasz Sowinski3-Oct-02 6:11

3-Oct-02 6:11

I have no idea how exactly CSortListCtrl works. Did you create this class yourself or downloaded from the net?

When program crashes, check the 'pid' and 'arrpsz'. Probably one of them is NULL.

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

*** Si fractum non sit, noli id reficere. ***

Re: crash on exit

ns3-Oct-02 6:28

3-Oct-02 6:28

THe article and demo are from CP
http://www.codeproject.com/listctrl/sortlistctrl.asp

. I didnt call their AddItem (earlier post)where the arrpsz stuff is getting set or used - I used my little AddItem1
which does nothing except inserItem in the first column. So I'm sure the variables you mentioned are null.

Looks like I cant replace their AddItem, since I have no clue what this pid stuff is, therefore cant use it in my AddItem1.

So my challenge is to (try to) extend their AddItem so it can take in an array also, which is what I'll use to insert my items. I can ignore the arguments they pass in, and leave all the arrpsz stuff intact so it doesnt get unhappy. Thanks for pointing me in the right direction. THe call stack is useful! Never used it before...

Appreciate your help,
ns

Re: crash on exit

Tomasz Sowinski3-Oct-02 6:35

Tomasz Sowinski

3-Oct-02 6:35

ns wrote:
I have no clue what this pid stuff is

The 'pid' variable in function causing the crash is item data. Each row in listview can have associated 32-bit value - you use GetItemData/SetItemData for that. CSortListCtrl apparently stores the pointer to some array (probably in the call to SetTextArray). pid is just the retrieved pointer. If you don't call original AddItem, then pid will be NULL and your app will die.

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

*** Si fractum non sit, noli id reficere. ***

Re: crash on exit

ns3-Oct-02 6:51

3-Oct-02 6:51

Hmmm.Okay. Thank you for that info.

Their addItem has one 'fixed' input variable, and unlimited optionals. I will have my subItem texts in an array and wanted to pass in an array but modifying their code is beyond my present capabiities. So I have to figure out how best to pass in my array the way they want it:

AddItem(pArray[0], pArray[1], pArray[2].......pArray[n])

which is how they want it. Its not at all obvious to me how I can loop on an index when passing in the array in this fashion.
My problem is that for one database where I get my subitem texts from, there is a particular 'n' value, and a different 'n' for a different database.So I cant hard code the AddItem parameter list. And I cant loop on an index in the argument list....

thanks,
ns

Re: crash on exit

Tomasz Sowinski3-Oct-02 6:54

Tomasz Sowinski

3-Oct-02 6:54

Their version of AddItem uses variable argument list and va_xxx stuff because they must provide convenient syntax for list controls containing different # of columns. Read the docs on va_start, va_end and va_arg and you'll get the idea what's going on. Passing array instead of array elements should be trivial.

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

*** Si fractum non sit, noli id reficere. ***

Re: crash on exit

ns3-Oct-02 7:10

3-Oct-02 7:10

Trying. I cant strip out their pid and arrpsz stuff safely, and its tied in with their variable optionals. Heres my attempt:

int CSortListCtrl::AddItem2( CString pArray[], int ArraySize)
{
//make a local pArray1[]
	const int iIndex = InsertItem( GetItemCount(), pArray1[0] );

	LPTSTR* arrpsz = new LPTSTR[ ArraySize ];
	arrpsz[ 0 ] = new TCHAR[ lstrlen( pArray1[0] ) + 1 ];
	(void)lstrcpy( arrpsz[ 0 ], pArray1[0] );

 //	va_list list;
//	va_start( list, pszText );

	for( int iColumn = 1; iColumn < ArraySize; iColumn++ )
	{
	//	pszText = va_arg( list, LPCTSTR );
	//	ASSERT_VALID_STRING( pszText );
		 CListCtrl::SetItemText( iIndex, iColumn,  pArray1[iColumn] );

		arrpsz[ iColumn ] = new TCHAR[ lstrlen( pArray1[iColumn] ) + 1 ];
		(void)lstrcpy( arrpsz[ iColumn ], pArray1[iColumn] );
	}

//	va_end( list );

	VERIFY( SetTextArray( iIndex, arrpsz ) );

	return iIndex;
}

Appreciate your help,
ns

Re: crash on exit

Tomasz Sowinski3-Oct-02 7:19

Tomasz Sowinski

3-Oct-02 7:19

You don't need to strip anything; just change the way arguments are passed. Your code looks OK; I'd use CStringArray instead of CString[].

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

*** Si fractum non sit, noli id reficere. ***

its working!!!!

ns3-Oct-02 7:37

3-Oct-02 7:37

I cant thank you enough. This exchange was very instructive. I used CStringArray like you said and it works, plus no crashes!
This is a little sample I tried before I use this class in my main project, but I wanted to tailor it so I could use it -
my pArray is going to come from reading in the all values of one row of a database into a CStringArray.

Now the next thing I have to do is figure out how to get all the values of a particular column out of the listcontrol. - ah GetItemText()

I thank you very much for all the help you have been giving me , and the patience Smile | :)

Appreciate your help,
ns

Re: its working!!!!

Ravi Bhavnani3-Oct-02 7:57

Ravi Bhavnani

3-Oct-02 7:57

Hurrah for CStringArray! (And thanks to Tomasz! Rose | [Rose]

)

/ravi

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

Re: its working!!!!

ns3-Oct-02 8:08

3-Oct-02 8:08

Tomasz did a lot for my confidence. Never in a million years did I dream that I'd have the courage to modify extremely foreign looking stuff like va_arg etc, but its demystified. Tons of sections in this CP class where I am clueless, but its like a daily learning process, so theres hope! Thanks for CStringArray. Quite friendly to use.

Appreciate your help,
ns

ActiveX Question?

Mr_Byte3-Oct-02 5:26

Mr_Byte

3-Oct-02 5:26

Hi , I'm writing an activex to apply skins to dialogs ,etc..
but I don't Know how to get the hwnd of the container of the activex (i.e. the dialog box)

Any I dea would be helpful
thanks in advansed

Re: ActiveX Question?

Stephane Rodriguez.3-Oct-02 6:53

Stephane Rodriguez.

3-Oct-02 6:53

Spy++

then ::FindWindow(), ::EnumWindow()

Normal hacking procedure.

sometimes it helps to look at the IL generated code
a MS guy on develop.com "answering" .NET issues

Re: ActiveX Question?

Nitron3-Oct-02 7:14

Nitron

3-Oct-02 7:14

Try:

AfxGetMainWnd()->GetSafeHwnd();

Nitron
_________________________________________--
message sent on 100% recycled electrons.

Re: ActiveX Question?

l a u r e n3-Oct-02 7:15

l a u r e n

3-Oct-02 7:15

getparent()
etc...?

"... and so i said to him ... if it don't dance (or code) and you can't eat it either f**k it or throw it away"
biz stuff about me

How to display Internet mail

hien_ng803-Oct-02 5:22

hien_ng80

3-Oct-02 5:22

Hi all!
I'm trying to write an Mail server using VC6.

It's OK for mail with Text only, but bot with formatted text, mail with Images ....!
Can any one tell me how to display a formatted mail as Netscape mail or Outlook express does.
what ActivexControol Can I use for mail editor and and mail displayer.

NNH

Re: How to display Internet mail

jmkhael3-Oct-02 5:44

jmkhael

3-Oct-02 5:44

Search for the browser control!

Papa

while (TRUE)
Papa.WillLove ( Bebe ) ;

Re: How to display Internet mail

ColinDavies3-Oct-02 11:04

ColinDavies

3-Oct-02 11:04

The webbrowser control that was suggested to you is fine, but it could well mean you are open too viruses etc.
Consider using the thumbnail control as well.
Note it isn't near as powerful as the webbrowser control, but good for previews.

Regardz
Colin J Davies

Sonork ID 100.9197:Colin

You are the intrepid one, always willing to leap into the fray! A serious character flaw, I might add, but entertaining.
Said by Roger Wright about me.

Re: How to display Internet mail

hien_ng803-Oct-02 21:01

hien_ng80

3-Oct-02 21:01

Thanks Davies!

NNH

actual IP on a local Computer

hien_ng803-Oct-02 5:14

hien_ng80

3-Oct-02 5:14

Hi all!
I connect to Internet by personal Computer though PSTN via a modem.
Does anyone know How to get the actual IP Address of such a computer like mine?(not get by localhost 127.0.0.01)
Thanks in advance.

NNH

Re: actual IP on a local Computer

jmkhael3-Oct-02 5:46

jmkhael

3-Oct-02 5:46

http://www.codeproject.com/internet/ipenum.asp

Papa

while (TRUE)
Papa.WillLove ( Bebe ) ;

Re: actual IP on a local Computer

Jon Hulatt3-Oct-02 6:08

Jon Hulatt

3-Oct-02 6:08

If you don't want to do it through code, you just want to know for your reference, then use winipcfg (win9x) or ipconfig (NT/2k/xp)

Signature space for rent. Apply by email to....

Re: actual IP on a local Computer

hien_ng803-Oct-02 21:08

hien_ng80

3-Oct-02 21:08

Thanks all!;)

NNH

Re: actual IP on a local Computer

Hanzo25-Oct-02 18:41

Hanzo

25-Oct-02 18:41

you can try gethostname and gethostbyname.
1) call gethostname to obtain host name
2) call gethostbyname take host name as parameter

CDialogBar

Zizilamoroso3-Oct-02 5:01

Zizilamoroso

3-Oct-02 5:01

I want to change panels dynamicaly. I used the ctrlbars sample from the mfc-sample collection. The panel gets created but doesn't show up. I've followed the example though...

Situation:
- CDialog derived CMyDialog with:
* button IDC_SHOW_BUTTON
* CDialogBar* m_pCmdBar
- DialogBar template IDD_MY_BAR

I want to show IDD_MY_BAR when the showbutton is pressed.

void CMyDialog::OnShowButton()
{
   m_pCmdBar=new CDialogBar();
   m_pCmdBar->Create(this,IDD_MY_BAR,CBRS_NOALIGN,IDD_MY_BAR);

   m_pCmdBar->Invalidate();
   AfxGetApp()->OnIdle(-1);
}

Did I forget something?

using: [VISUAL STUDIO 6.0] [WIN98/2]

Re: CDialogBar

Tomasz Sowinski3-Oct-02 5:13

Tomasz Sowinski

3-Oct-02 5:13

Is your app dialog-based?

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

*** Si fractum non sit, noli id reficere. ***

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