C / C++ / MFC

26-Mar-02 1:24

hello every body
when i tried to add a member variable for a datetimepicker the following error happen:'DDX_FieldDateTimeCtrl' : undeclared identifier

how can i avoid this error.
any help

Best Regards Smile | :)

Tomasz Sowinski26-Mar-02 1:33

26-Mar-02 1:33

Do you have #include <afxdtctl.h> in stdafx.h?

Tomasz Sowinski -- http://www.shooltz.com
** If you're going to rape, pillage and burn, be sure to do things in that order. **

Drawil26-Mar-02 1:40

26-Mar-02 1:40

yes i have this include file

Best Regards Smile | :)

Tomasz Sowinski26-Mar-02 1:45

26-Mar-02 1:45

I've just noticed that 'Field' in DDX_FieldDateTimeCtrl. AFAIK, there's no such thing, at least in VC6. Are you adding this manually or with ClassWizard?

Tomasz Sowinski -- http://www.shooltz.com
** If you're going to rape, pillage and burn, be sure to do things in that order. **

Drawil26-Mar-02 1:51

26-Mar-02 1:51

It's added with ClassWizard and I work VC6.

Best Regards Smile | :)

Tomasz Sowinski26-Mar-02 1:55

26-Mar-02 1:55

KB article Q195073 has the solution for your problem - you'll have to manually change DDX_FieldDateTimeCtrl to DDX_DateTimeCtrl

Tomasz Sowinski -- http://www.shooltz.com
** If you're going to rape, pillage and burn, be sure to do things in that order. **

Drawil26-Mar-02 2:04

26-Mar-02 2:04

hi Tomasz
thanx , it's working now

best regards Smile | :)

Best Regards Smile | :)

TLBS & Smart pointers bullshit ??

26-Mar-02 1:56

BUG: Error C2065: 'DDX_FieldDateTimeCtrl': Undeclared Identifier

Q195073

--------------------------------------------------------------------------------
The information in this article applies to:

Microsoft Visual C++, 32-bit Enterprise Edition, version 6.0

--------------------------------------------------------------------------------

SYMPTOMS
When using the Date Time Picker Control in a Microsoft Visual C++ 6.0 AppWizard (exe) Database project, you may receive the following error:

Compiler Error "Error C2065: 'DDX_FieldDateTimeCtrl' : undeclared identifier"

CAUSE
The database dialog data exchange cover routine generated by the Microsoft Visual C++ 6.0 AppWizard for exchanging data between the Date Time Picker control and the recordset member variable is DDX_FieldDateTimeCtrl( ). This function is omitted from the Visual C++ 6.0 release code.

RESOLUTION
Replace the database dialog data exchange cover routine DDX_FieldDateTimeCtrl( ) with the AFXAPI DDX_DateTimeCtrl( ). Remove the fourth parameter in the DDX_DateTimeCtrl() call.

STATUS
Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article.

Braulio Dez26-Mar-02 1:03

26-Mar-02 1:03

Hi,

I have created one ActiveX Full control, and I'm using it through a TLB in my MFC client App, I need to get the interface to IDataObject, but it didn´t work out, I have tried two ways, the "smart one" ( pBaseMeta is an smart pointer to my control BSREPORTCTRLSLib::IBsMetafilePtr pBaseMeta):

IDataObjectPtr DataObj;
DataObj = pBaseMeta;

The good old one...:

IUnknown    *pUnk     = NULL;
IDataObject *pDataObj = NULL;

pBaseMeta.QueryInterface(IID_IUnknown, (void **)pUnk);
pUnk->QueryInterface(IID_IDataObject, (void **)pDataObj);

Here even a QI to IUnknown returns me NULL !

Should I forget TLBS and all that wrappers and directyle use CLSID's... and GUIDS and AddRef and..., is so sh*tty this ?

Thanks in advance
Braulio

Tomasz Sowinski26-Mar-02 1:14

26-Mar-02 1:14

Use debugger to step into pBaseMeta.QueryInterface - you'll be able to check what's exactly going on. Maybe smart pointer isn't initialized correctly.

Tomasz Sowinski -- http://www.shooltz.com
** If you're going to rape, pillage and burn, be sure to do things in that order. **

Braulio Dez26-Mar-02 1:18

26-Mar-02 1:18

Hi,

I tried to debug, but I can not go too deep ( I´m manipulating the activeX ( that is on one Word automated instance), from my MFC app.

The HResult that I get is: 0x80070057

Any idea why can this be ?, Thanks in advance, Greetings
Braulio

Tomasz Sowinski26-Mar-02 1:31

26-Mar-02 1:31

Braulio Díez wrote:
The HResult that I get is: 0x80070057

This means that 'The parameter is incorrect.' - you can use ErrorLookup program available from Tools menu in VC IDE.

Anyway, did your QueryInterface call go into COM? Or it quits early?

Tomasz Sowinski -- http://www.shooltz.com
** If you're going to rape, pillage and burn, be sure to do things in that order. **

Braulio Dez26-Mar-02 2:36

MS Access - how to print the design view

26-Mar-02 2:36

If I call

pBaseMeta->QueryInterface(IID_IDataObject, (void **)pDataObj);

it goes into this:

Interface* operator->() const throw(_com_error)
{
    if (m_pInterface == NULL) {
        _com_issue_error(E_POINTER);
    }

    return m_pInterface;
}

If I call:

pBaseMeta.QueryInterface(IID_IDataObject, (void **)pDataObj);

I cannot go deeper than:

template<typename _InterfaceType> HRESULT QueryInterface(const IID& iid, _InterfaceType*& p) throw ()
{
    if (m_pInterface != NULL) {
        return m_pInterface->QueryInterface(iid, reinterpret_cast<void**>(&p));
    }

    return E_POINTER;
}

Maybe it can fail because the ActiveX is holded on a Word Instance, and that only accept IDispatch or dual interfaces ?

Nish Nishant26-Mar-02 0:40

26-Mar-02 0:40

Hello guys

Is there any way to take a print out of the DB structure of an MS access database. When I open any table in design view, the print icons get disabled.

I tried exporting to mysql, but the problem is the data types get changed.

I dont want to sit and type in each table with all the fields and their characteristics.

I badly need some tool that will let me take a print out of the DB structure

Nish

p.s. thanks in advance

I am looking for a free racing game. Old style racing game without any complicated 3D stuff. Around 4 MB download. If anyone has such a game, please inform me.

Tomasz Sowinski26-Mar-02 0:46

26-Mar-02 0:46

First of all, this is very bad place to ask questions about MS Access. Smile | :)

Second, you can iterate over tables/queries/relationships using VBA. In fact, I was once working on a project in which we were doing DB design in Access and next exporting the schema as sql scripts to SQL Server.

Tomasz Sowinski -- http://www.shooltz.com
** If you're going to rape, pillage and burn, be sure to do things in that order. **

Nish Nishant26-Mar-02 2:02

26-Mar-02 2:02

I took the best option out.
Asked my colleague to manually type the table design into word Smile | :)

She finished in 30 mins.
Nice of her I say

Nish

I am looking for a free racing game. Old style racing game without any complicated 3D stuff. Around 4 MB download. If anyone has such a game, please inform me.

Tomasz Sowinski26-Mar-02 2:05

26-Mar-02 2:05

It works, but only if you have toy database with small number of tables.

Tomasz Sowinski -- http://www.shooltz.com
** If you're going to rape, pillage and burn, be sure to do things in that order. **

Nish Nishant26-Mar-02 2:12

26-Mar-02 2:12

Tomasz Sowinski wrote:
It works, but only if you have toy database with small number of tables

Yeah.
This one had only 6 tables each with 6-7 fields Smile | :)

Nish

I am looking for a free racing game. Old style racing game without any complicated 3D stuff. Around 4 MB download. If anyone has such a game, please inform me.

David Wengier26-Mar-02 0:48

David Wengier

26-Mar-02 0:48

If its that urgent, try just using Print Screen to capture the screen.

On the relationships screen (which kind of shows table design) there is a "Print Relationships..." item in the File menu. It didnt work for me, but it might work for you.

--
David Wengier

Sonork ID: 100.14177 - Ch00k

Nish Nishant26-Mar-02 0:58

26-Mar-02 0:58

David Wengier wrote:
try just using Print Screen to capture the screen.

Not very useful.
Cause I wont get all the field properties.
I'll only get field properties for the currently selected field

Nish

I am looking for a free racing game. Old style racing game without any complicated 3D stuff. Around 4 MB download. If anyone has such a game, please inform me.

IDataObject Override SetData

Michael P Butler26-Mar-02 3:29

Michael P Butler

26-Mar-02 3:29

Access used to let you print the table layout via the Tools->Analysze->Documentor menu option. It's been a few years since I last tried it, so it might have moved.

You could write a quick app using ADOX to get the table structure. I think there is a good example on MSDN.

Michael Smile | :)

Braulio Dez26-Mar-02 0:22

Re: IDataObject Override SetData

26-Mar-02 0:22

Hi,

I want to pass a metafile to my com server using IDataObject, in my MFC client App I do this:

   IDataObjectPtr DataObj;
   
   DataObj = pBaseMeta;

   if(DataObj) {
      FORMATETC Fe;

      Fe.cfFormat = CF_ENHMETAFILE;
      Fe.ptd      = NULL;
      Fe.dwAspect = DVASPECT_CONTENT;
      Fe.lindex   = -1;
      Fe.tymed    = TYMED_ENHMF ;     
 
      STGMEDIUM Medium;

      Medium.tymed        = TYMED_ENHMF;
      Medium.hEnhMetaFile = hMeta;
         
      HRESULT hr = DataObj->SetData(&Fe, &Medium, TRUE);
}

and in my COM Server ( full ActiveX ctrl that inherits from IDataObjectImpl), I override the SetData method:

STDMETHODIMP CSCurveMeta::SetData(FORMATETC *pFormatetc, STGMEDIUM *pmedium, BOOL fRelease)
{
   if(pFormatetc->cfFormat != CF_ENHMETAFILE) {
      ::MessageBox(NULL, ":-((", ":-(( No metafile...", MB_OK);
      return E_NOTIMPL;
   }

   if(pmedium->hEnhMetaFile != NULL) {
          // Metafile here...
   }
   return  S_OK;
}

But that method is never executed Frown | :-(

( the call of SetData made in the MFC client app makes nothing...).

What I´m doing wrong ?, Thanks in advance, Bye !
Braulio

Joao Vaz26-Mar-02 3:51

Joao Vaz

26-Mar-02 3:51

Braulio,a obvious question do you tried to step in setData in the client ?
HRESULT hr = DataObj->SetData(&Fe, &Medium, TRUE);
what hr displays ?
Tip , in the watch varibles format the hr variable as hr, hr . Add the virgul then the format specifier hr what hr displays ... E_NOTIMPL ?
Or Simply add this @EAX,hr -> the eax register holds the return value of functions and adding hr , format the variable to show the message instead of a hex or decimal number ... it's like calling error lookup Smile | :)

Joao Vaz

Re: IDataObject Override SetData

Braulio Dez26-Mar-02 4:02