Error: no data exchange control with ID 0x03F4. what does it mean?

[InternationScape]

I add a button in my dialog,
Some error occurs:

debug report:

Error: no data exchange control with ID 0x03F4.
The thread 0x850 has exited with code 3 (0x3).
Detected memory leaks!
Dumping objects ->
strcore.cpp(118) : {601} normal block at 0x003D6D80, 45 bytes long.
Data: < Aria> 01 00 00 00 05 00 00 00 20 00 00 00 41 72 69 61
{600} normal block at 0x003D69A8, 16 bytes long.
Data: < > FF FF FF FF CD CD CD CD CD CD CD CD CD CD CD CD
plex.cpp(31) : {426} normal block at 0x003D6A98, 164 bytes long.
Data: < M_> 00 00 00 00 00 00 00 00 00 00 00 00 14 0B 4D 5F
map_sp.cpp(74) : {425} normal block at 0x003D6A10, 68 bytes long.
Data: < j= > 9C 6A 3D 00 00 00 00 00 00 00 00 00 00 00 00 00
plex.cpp(31) : {393} normal block at 0x003D68C0, 164 bytes long.
Data: < M_> 00 00 00 00 00 00 00 00 00 00 00 00 14 0B 4D 5F
map_sp.cpp(74) : {392} normal block at 0x003D6838, 68 bytes long.
Data: < h= > C4 68 3D 00 00 00 00 00 00 00 00 00 00 00 00 00
plex.cpp(31) : {300} normal block at 0x003D62A0, 164 bytes long.
Data: < M_> 00 00 00 00 00 00 00 00 00 00 00 00 14 0B 4D 5F
map_sp.cpp(74) : {299} normal block at 0x003D5F60, 68 bytes long.
Data: < b= > A4 62 3D 00 00 00 00 00 00 00 00 00 00 00 00 00
plex.cpp(31) : {267} normal block at 0x003D6150, 164 bytes long.
Data: < M_> 00 00 00 00 00 00 00 00 00 00 00 00 14 0B 4D 5F
map_sp.cpp(74) : {266} normal block at 0x003D60C8, 68 bytes long.
Data: <Ta= > 54 61 3D 00 00 00 00 00 00 00 00 00 00 00 00 00
plex.cpp(31) : {234} normal block at 0x003D5750, 164 bytes long.
Data: < M_> 00 00 00 00 00 00 00 00 00 00 00 00 14 0B 4D 5F
map_sp.cpp(74) : {233} normal block at 0x003D56C8, 68 bytes long.
Data: <TW= > 54 57 3D 00 00 00 00 00 00 00 00 00 00 00 00 00
plex.cpp(31) : {187} normal block at 0x003D5CD8, 164 bytes long.
Data: < M_> 00 00 00 00 00 00 00 00 00 00 00 00 14 0B 4D 5F
map_sp.cpp(74) : {186} normal block at 0x003D5C50, 68 bytes long.
Data: < \= > DC 5C 3D 00 00 00 00 00 00 00 00 00 00 00 00 00
plex.cpp(31) : {153} normal block at 0x003D5A48, 164 bytes long.
Data: < M_> 00 00 00 00 00 00 00 00 00 00 00 00 14 0B 4D 5F
map_sp.cpp(74) : {152} normal block at 0x003D59C0, 68 bytes long.
Data: <LZ= > 4C 5A 3D 00 00 00 00 00 00 00 00 00 00 00 00 00
plex.cpp(31) : {95} normal block at 0x003D4EA0, 124 bytes long.
Data: < N= > 00 00 00 00 B0 4E 3D 00 00 00 00 00 10 F7 12 00
strcore.cpp(118) : {71} normal block at 0x003D4D38, 57 bytes long.
Data: < , , D:\U> 01 00 00 00 2C 00 00 00 2C 00 00 00 44 3A 5C 55
strcore.cpp(118) : {70} normal block at 0x003D4E28, 46 bytes long.
Data: < ! ! D:\U> 01 00 00 00 21 00 00 00 21 00 00 00 44 3A 5C 55
strcore.cpp(118) : {63} normal block at 0x003D4B80, 29 bytes long.
Data: < Helv> 01 00 00 00 10 00 00 00 10 00 00 00 48 65 6C 76
Object dump complete.
The thread 0x994 has exited with code 3 (0x3).

[Tischnoetentoet]

Did you only add a member variable for the button, or did you also add the control to the DoDataExchange function?

[Krishnaa]

Have you added some control a member variable and then just deleted the control from dialog ??

If you want to delete the control, then you should first delete the member variable.

[InternationScape]

Now I delete the control and the member variable,
then add a new control again and member variable,
it has the same problem also,
why?

[Krishnaa]

Can you attach your project here ?

[InternationScape]

Sorry, I can't.
but can you tell me your idea?
what's the problem most possible?

[MrBeans]

And those leaks are terrific, please clear them.

[InternationScape]

How to clear?

[Krishnaa]

You need to find out where the memory is leaked, BTW is that report when your program abnormally stopped (crashed) ?? Or is it when you closed it properly ?

Also can you post the code of your dialog's cpp file esp. the code of message map ( look for BEGIN_MESSAGE_MAP, END_MESSAGE_MAP), and the DDX function (look for DoDataExchange).

[Andrew Hain]

How to clear?

Try using std::auto_ptr instead of pointers when you want the memory reclaimed when you go out of scope.

[InternationScape]

void CExit:oDataExchange(CDataExchange* pDX)
{
CDialog:oDataExchange(pDX);
//{{AFX_DATA_MAP(CExit)
DDX_Control(pDX, IDC_FINISH, m_Exit);
DDX_Control(pDX, IDC_BKGRD, m_background);
//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CExit, CNewWizPage)
//{{AFX_MSG_MAP(CExit)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

[Krishnaa]

void CExit:oDataExchange(CDataExchange*

pDX)
{
CDialog:oDataExchange(pDX);
//{{AFX_DATA_MAP(CExit)
DDX_Control(pDX, IDC_FINISH, m_Exit);
DDX_Control(pDX, IDC_BKGRD, m_background);
//}}AFX_DATA_MAP
}

Do the m_Exit & m_background controls present on dialog ?

[InternationScape]

No，
the dialog can't be created.

[Krishnaa]

No，
the dialog can't be created.

You mean no control attched to the m_background & m_Exit variables ??

If yes, then you should comment out the calls to DDX_Control as,

CDialog:DoDataExchange(pDX);
//{{AFX_DATA_MAP(CExit)
//DDX_Control(pDX, IDC_FINISH, m_Exit); // comment out
//DDX_Control(pDX, IDC_BKGRD, m_background);// comment out
//}}AFX_DATA_MAP
}

[InternationScape]

No, this dialog will be as a page of a wizard,
when create this dialog,
the program crashes, why?