DDX and Arrays - C / C++ / MFC Discussion Boards

Re: XML DOM insertBefore() Method

p_196012-Jun-09 0:45

p_1960

12-Jun-09 0:45

Thank u very much for ur valuble advice...

Re: XML DOM insertBefore() Method

p_196012-Jun-09 1:19

p_1960

12-Jun-09 1:19

can i assign a IXMLDOMElementPtr to IXMLDOMNodePtr....is it fine..

CControlBars always on top of CMDIChildWnd

Niklas L11-Jun-09 23:27

Niklas L

11-Jun-09 23:27

I have some control bars (CDialogBar actually, but the problem is the same for all CControlBar derived classes) owned by my CMDIChildWnd derived class. These control bars contains document specific data.

The problem I can't seem to find a solution to is when one of these control bars is in a floating state and I have more than one document open. The floating control bar is alway on top of all CMDIChildWnd derived windows, making it difficult to know to which it actually belongs.

(This can be easily tested by just adding the toolbar from the CMainFrame to the CChildFrame class and opening a few document windows and let a toolbar float.)

The behaviour I'd like to see is that the control bar should be on top of its owning CMDIChildWnd, but below any other CMDIChildWnd that might be in front of it.

Does anyone have a clue how to do this?

I have tried SetWindowPos(&my_child_frame,...) in various places without any luck.
Maybe I could set the window style of the CMiniFrameWnd somehow?

Any ideas would be appreciated.

I run MFC (obviously) and VS2003, though I doubt that matters.

home

How to Generate a Installer in VC++???

Jayaraman K11-Jun-09 23:17

Jayaraman K

11-Jun-09 23:17

hi,
My requirement is like this. Ill develop a User Interface for the user to customise and select the controls required for him (for a specific ). Is it possible to generate
a installshiel setup for the selected file. Pls help

Regards
Jayaraman

Re: How to Generate a Installer in VC++???

Cedric Moonen11-Jun-09 23:23

Cedric Moonen

11-Jun-09 23:23

Jayaraman K wrote:
a installshiel setup

If you really want to use InstallShield, why didn't you look at the company website[^] ?
On the other hand, if you would like to use a free tool, I suggest InnoSetup[^]

Cédric Moonen
Software developer

Charting control [v2.0]
OpenGL game tutorial in C++

RichEditCtrl display data

MrKBA11-Jun-09 23:04

MrKBA

11-Jun-09 23:04

Hi,
Can you please help me and told me how can i set option of my RichEditCtrl to display the All line which exceeds the width of RichEditCtrl and not with scroll.
ie when i have a text string like that "blablablablablablablablablablablablablablablablablablabla"
and the width of the RichEditCtrl is less than the length of this string it should display the part of this string and display the rest in newline.

Re: RichEditCtrl display data

Michael Schubert12-Jun-09 2:42

Michael Schubert

12-Jun-09 2:42

Did you even bother to read my reply when you posted this yesterday?

The text will wrap automatically when you use the ES_MULTILINE style.

DDX and Arrays

stevepqr11-Jun-09 22:32

stevepqr

11-Jun-09 22:32

VS6.0, C++

I have a control I need to 'interact' with, I set it up the usual way with
ID = IDC_TINY1 and using ClassWizard to assign a variable CStatic m_Tiny1, as expected this gives me:-

DDX_Control(pDX, IDC_TINY1, m_Tiny1);

and in the header:-

CStatic m_Tiny1;

Now though I have 11 more identical controls and instead of having m_Tiny1, m_Tiny2, m_Tiny3 etc I think it would be better to have an array m_Tiny[12] but there seems to be no way to assign each element of the array using ClassWizard. So I decided to edit these entries manually to give me:-

DDX_Control(pDX, IDC_TINY1, m_Tiny[0]);
DDX_Control(pDX, IDC_TINY2, m_Tiny[1]);
DDX_Control(pDX, IDC_TINY3, m_Tiny[2]);
.
.
.
DDX_Control(pDX, IDC_TINY12, m_Tiny[11]);

and:-

CStatic m_Tiny[12];

This appeared to work just fine until I came to edit another control using ClassWizard I then got the error:-

Parsing Error: Expected ")" Input Line:"DDX_Control(pDX,IDC_TINY1,m_Tiny[0]"

I'm assuming this is VS telling me I have an entry in the DDX that it didn't put there even though it quite happily will compile and run it.

So to the problem: Is having array elements in DDX entries a valid thing to do? If yes then how do I do it without the error?

Thanks

Apathy Rules - I suppose...

Its not the things you fear that come to get you but all the things that you don't expect

Re: DDX and Arrays

Cedric Moonen11-Jun-09 22:54

Cedric Moonen

11-Jun-09 22:54

stevepqr wrote:
Parsing Error: Expected ")" Input Line:"DDX_Control(pDX,IDC_TINY1,m_Tiny[0]"

You forgot ");" at the end of the line. That's exactly what VS is telling you also Smile | :)

Cédric Moonen
Software developer

Charting control [v2.0]
OpenGL game tutorial in C++

Re: DDX and Arrays

Chandrasekharan P11-Jun-09 23:03

Chandrasekharan P

11-Jun-09 23:03

cedric, i dont think he has forgotten to add the closing bracket because in the query where he is adding the control variable i can see the bracket being put properly.

Re: DDX and Arrays

Caslen11-Jun-09 23:05

Caslen

11-Jun-09 23:05

Thanks for that but I forgot it from the post not the code! message actually reads:-

Parsing Error: Expected ")" Input Line:"DDX_Control(pDX,IDC_TINY1,m_Tiny[0]);"

Sorry!

Re: DDX and Arrays

Chandrasekharan P11-Jun-09 23:00

Chandrasekharan P

11-Jun-09 23:00

put the above code after like this //}}AFX_DATA_MAP

//}}AFX_DATA_MAP


<blockquote class="FQ"><div class="FQA">stevepqr wrote:</div>DDX_Control(pDX, IDC_TINY1, m_Tiny[0]);
DDX_Control(pDX, IDC_TINY2, m_Tiny[1]);
DDX_Control(pDX, IDC_TINY3, m_Tiny[2]);
.
.
.
DDX_Control(pDX, IDC_TINY12, m_Tiny[11]);</blockquote>

in DoDataExchange Function. It should work.

Re: DDX and Arrays

Caslen11-Jun-09 23:06

Caslen

11-Jun-09 23:06

Thanks but the code is already included inside the '//}}AFX_DATA_MAP' I didn't change this part just added lines inside the markers.

Re: DDX and Arrays

Chandrasekharan P11-Jun-09 23:08

Chandrasekharan P

11-Jun-09 23:08

i had the same problem and this was solved by adding the code outside the markers.

Re: DDX and Arrays

Ozer Karaagac11-Jun-09 23:14

Ozer Karaagac

11-Jun-09 23:14

ClassWizard only parses the lines inside its comments.

You should place your custom lines outside the class wizard's special comments. Just below the comment line //}}AFX_DATA_MAP, for example.

CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CYourDialogClassName)
  // lines added by ClassWizard
  // DDX_Control(...);
  // DDX_Text(...);
//}}AFX_DATA_MAP
// lines added manually
DDX_Control(pDX, IDC_TINY1, m_Tiny[0]);
DDX_Control(pDX, IDC_TINY2, m_Tiny[1]);

You should also take definitions into account in header file.

// Dialog Data
//{{AFX_DATA(CDlgFoo)
enum { IDD = IDD_DIALOG1 };
CStatic m_static1;
//}}AFX_DATA
CStatic m_Tiny[12];

The lines added manually in that way, won't be parsed by ClassWizard.

Re: DDX and Arrays

Caslen11-Jun-09 23:28

Caslen

11-Jun-09 23:28

I thought of this already - when I try it I get 'Cannot Add New Member' when I try to add a new member but otherwise it works ok. I'm getting round this by commenting out the above lines adding new members and then uncommenting them, PITA!! Smile | :)

Re: DDX and Arrays

Ozer Karaagac11-Jun-09 23:39

Ozer Karaagac

11-Jun-09 23:39

The problem may be with <your project="" name="">.clw file. Close project then rename that file. ClassWizard will re-create it. Or you may edit yourself if you know what you do. Smile | :)

Re: DDX and Arrays

stevepqr12-Jun-09 0:02

stevepqr

12-Jun-09 0:02

Thanks! Deleting the .clw and regenerating it did the trick - strangely, after recreating it I had to exit VS and restart but now all is good.

Thanks to everyone else too for their suggestions.

Smile | :)

Apathy Rules - I suppose...

Its not the things you fear that come to get you but all the things that you don't expect

Saving and Restoring Toolbars (Win32 SDK)

signalatub11-Jun-09 22:03

signalatub

11-Jun-09 22:03

I am trying to Saving and Restoring Toolbars status by sending TB_SAVERESTORE message. MSDN says if you don't have user data to store with the toolbar buttons, you don't need to handle TBN_SAVE or TBN_RESTORE notification. So, now, the saving and restoring are fine, the program restores toolbar buttons correctly. However, if I try to kill that toolbar control restored, Visual Studio gives a warning message "Unhandled exception at 0x7c901230 in win32tst.exe: User breakpoint." This warning only shows if the program is launched inside the Visual Studio. It just runs fine if launched outside of Visual Studio. So I tried to debug with WinDbg.exe, and it gives a more detailed description of that user breakpoint warning "Invalid Address specified to RtlFreeHeap". Anybody knows what's wrong with the restoring? Thanks.

case WM_NOTIFY:
{
switch (((LPNMHDR)lParam)->code)
{
case TBN_GETBUTTONINFO:
{
LPTBNOTIFY lpTbNotify = (LPTBNOTIFY)lParam;

// Pass the next button from our array. There is no need to
// filter out buttons that are already used; they will be
// ignored.
int buttonCount = sizeof(tbButtons) / sizeof(TBBUTTON);
if (lpTbNotify->iItem < buttonCount)
{
lpTbNotify->tbButton = tbButtons[lpTbNotify->iItem];
return TRUE;
}
else
{
// No more buttons.
return FALSE;
}
}
break;

case TBN_QUERYINSERT:
case TBN_QUERYDELETE:
return TRUE;
case TBN_ENDADJUST:
{
TBSAVEPARAMS tbSave;
tbSave.hkr = HKEY_CURRENT_USER;
tbSave.pszSubKey = "Software\\key";
tbSave.pszValueName = "tbsave";
SendMessage(GetDlgItem(hWnd,ID_TOOLBAR),TB_SAVERESTORE, TRUE, (LPARAM)&tbSave);
}
return TRUE;
}
}
break;

Add support for Memory leak detection

Nandu_77b11-Jun-09 20:14

Nandu_77b

11-Jun-09 20:14

We have a huge C++ code, developed on Microsoft Visual Studio 6.0. This contains but server and client code. Now the requirement is to add a support for memory leak detection.
So can any one help me to code, which should check the existing whole code base for memory leaks.

Thanks,
Nandu

Re: Add support for Memory leak detection

chirag_chauhan11-Jun-09 20:46

chirag_chauhan

11-Jun-09 20:46

You can use CRT functions like _CrtDumpMemoryLeaks, Refer http://msdn.microsoft.com/en-us/library/d41t22sb(VS.71).aspx[^] to start with.

Re: Add support for Memory leak detection

Nandu_77b11-Jun-09 21:02

Nandu_77b

11-Jun-09 21:02

Thanks, But the above mentioned will not support VS6.0, I need a similar solution for VS 6.0

-Nandu

Re: Add support for Memory leak detection

Hamid Taebi11-Jun-09 21:32

Hamid Taebi

11-Jun-09 21:32

See Visual Leak Detector [^].

Of one Essence is the human race
thus has Creation put the base
One Limb impacted is sufficient
For all Others to feel the Mace
(Saadi )

segmentation problem

sandeep_dhruwa11-Jun-09 19:31

sandeep_dhruwa

11-Jun-09 19:31

Help me with these program
/* program to illustrte read function with pointer */
//this program may not work properly because of memory problems in read
#include<stdlib.h>
#include<stdio.h>
#include<unistd.h>
#include<string.h>
int main()
{
char *buf,c;
int nread;
memset(buf,0,0);
buf=malloc(1024);
nread=read(0,&buf,100);
printf("characters read: %d\n",nread);

if(nread == -1)
{
write(2,"An error occured in read function\n",27);
}
else
{
if(nread==0)
write(2,"Data is not written to the filedescriptor\n",27);
else
write(1,&buf,nread);
}
free(buf);
}

output:
sandeep@sandeep Unsure | :~

$ ./a.out <x
characters read: 75
this is Kead program
which is throwing lots of errore
lets correct them
Segmentation fault

Re: segmentation problem

Cedric Moonen11-Jun-09 20:13

Cedric Moonen

11-Jun-09 20:13

sandeep_dhruwa wrote:
char *buf,c;
int nread;
memset(buf,0,0);
buf=malloc(1024);

You have to call malloc before calling memset. Otherwise, you will try to write into an invalid pointer.

Cédric Moonen
Software developer

Charting control [v2.0]
OpenGL game tutorial in C++

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