C / C++ / MFC Discussion Boards

ramesh20067-May-06 22:16

ramesh2006

7-May-06 22:16

i getting this error while using List box can u help me with this.

error C2228: left of '.AddString' must have class/struct/union type
Error executing cl.exe.

Re: List Box Error

Cedric Moonen7-May-06 22:22

Cedric Moonen

7-May-06 22:22

The left part of AddString has probably a typo mistake. Post some code if you can't find the solution.

Re: List Box Error

ramesh20067-May-06 22:35

ramesh2006

7-May-06 22:35

CStatusDlg::m_OUTPUT.AddString(e->filename);

if i remove the CStatusDlg then i will get the error
error C2065: 'm_OUTPUT' : undeclared identifier

Re: List Box Error

Cedric Moonen7-May-06 22:36

Cedric Moonen

7-May-06 22:36

Where is this m_OUTPUT declared ? Post the code about that also. Is it a pointer ?

Re: List Box Error

Hamid_RT7-May-06 22:46

Hamid_RT

7-May-06 22:46

CStatusDlg::m_OUTPUT.AddString(e->filename);
c:\Answer\AnswerView.cpp(322): error C2228: left of '.AddString' must have class/struct/union type
type is ''unknown-type''

use this
CStatusDlg m_OUTPUT;
m_OUTPUT.AddString(e->filename);

Re: List Box Error

ramesh20067-May-06 23:36

ramesh2006

7-May-06 23:36

i did what u said but still i am getting the error

error C2039: 'AddString' : is not a member of 'CStatusDlg'

m_OUTPUT is declared as list box in CStatusDlg:: class
and e->filename is declared in Index :: class ,

both of them are presernt in 2 differnet class

-----------------------------------------------------
void CStatusDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CStatusDlg)
DDX_Control(pDX, IDC_OUTPUT, m_OUTPUT);
//}}AFX_DATA_MAP
}
------------------------------------------------------

Re: List Box Error

Hamid_RT8-May-06 0:14

Hamid_RT

8-May-06 0:14

if you get this error i think CStatusDlg isnt ClisBox
'AddString' : is not a member of 'CStatusDlg' so maybe CStatusDlg isnt from CListBox

Re: List Box Error

Maxwell Chen7-May-06 22:45

Maxwell Chen

7-May-06 22:45

It looks like they (ramesh2006[^] and parichaybp[^]) are the same guy ... Unsure | :~

Maxwell Chen

Re: List Box Error

Hamid_RT7-May-06 22:34

Hamid_RT

7-May-06 22:34

maybe you used one variable that isnt from ClistBox
its ture
CListBox m_List;
List.AddString("");//

Excel Automation in BCB4

kittymew7-May-06 21:39

kittymew

7-May-06 21:39

Hello!

Is there anybody who has experience in excel automation in BCB4? I am trying to automate ms excel 2000, but I always received errors in run time about invalid class string. I was just trying out these three lines like what a book said:

Variant V;
V = CreateOleObject("Excel App");
V.OlePropertySet("Visible", true);

I hope somebody could help me. Many thanks in advance, folks!

Graphics in vc++

pavan105nagarbhavi7-May-06 21:28

pavan105nagarbhavi

7-May-06 21:28

I have to do graphics in vc++
can you please give any web site or book which can help me in this regard.
I have to add features like zoom in zoom out
Pavan P

-- modified at 3:34 Monday 8th May, 2006

Re: Graphics in vc++

Hamid_RT7-May-06 21:31

Hamid_RT

7-May-06 21:31

yes i have three suggestion http://www.codeproject.com and http://www.wotsit.org and www.msdn.com

Re: Graphics in vc++

Nibu babu thomas7-May-06 21:31

Nibu babu thomas

7-May-06 21:31

pavan105nagarbhavi wrote:
any web site

The Numero Uno[^] Jig | [Dance]

Graphics[^]

Nibu thomas
Software Developer

Faqs by Michael dunn

Re: Graphics in vc++

Cedric Moonen7-May-06 21:35

Cedric Moonen

7-May-06 21:35

This is very vague. Which kind of graphics ? Could you elaborate ?

Re: Graphics in vc++

kk.tvm7-May-06 22:25

kk.tvm

7-May-06 22:25

HI
Samples are availble in MSDN CD under \SDK\Graphics

KK

How to change the default registry root

Sarvan AL7-May-06 21:14

Sarvan AL

7-May-06 21:14

Hi Geniuses,

I saving the toolbar status of my MDI application using SaveBarState (_T("TBStatus")). It works fine. It stores the status in the registry here:

HKEY_CURRENT_USER\Software\Local AppWizard-Generated Applications\MyApp\TBStatus

I want the status to be stored in some other place, specifically here:
HKEY_LOCAL_MACHINE\SOFTWARE\MyApplication\TBStatus

Where "HKEY_LOCAL_MACHINE\SOFTWARE\MyApplication" is the installation entry.

My aim is to remove the toolbar status entry from the registry while uninstalling the application.

If anybody could suggest me a solution, I would be grateful.

Thanks in advance,
Sarvan AL

Re: How to change the default registry root

Nibu babu thomas7-May-06 21:18

Nibu babu thomas

7-May-06 21:18

Take a look at SetRegistryKey(...).

Nibu thomas
Software Developer

Faqs by Michael dunn

Re: How to change the default registry root

Sarvan AL7-May-06 21:31

Sarvan AL

7-May-06 21:31

Hi Nibu,

The SetRegistryKey always stores under "HKEY_CURRENT_USER\Software". But I want to store in "HKEY_LOCAL_MACHINE\SOFTWARE\MyApp". I am using Win2000. But it needs to be done in Win98 and WinXP too.

Is there anyother alternative?

Thanks for your interest.

Sarvan AL

Re: How to change the default registry root

Michael Dunn7-May-06 21:35

Michael Dunn

7-May-06 21:35

Unless you have a specific need, the toolbar state shouldn't be stored in HKLM, since the UI state is a per-user thing.

--Mike--
Visual C++ MVP Cool | :cool:

LINKS~! Ericahist | PimpFish | CP SearchBar v3.0 | C++ Forum FAQ

Re: How to change the default registry root

Nibu babu thomas7-May-06 21:37

Nibu babu thomas

7-May-06 21:37

Sarvan AL wrote:
Is there anyother alternative?

From the Docs:

If you assign a value to m_pszRegistryKey, it must be dynamically allocated on the heap. The CWinApp destructor calls free( ) with this pointer. You many want to use the _tcsdup( ) run-time library function to do the allocating. Also, free the memory associated with the current pointer before assigning a new value. For example:

//First free the string allocated by MFC at CWinApp startup.
//The string is allocated before InitInstance is called.
free((void*)m_pszRegistryKey);
//Change the name of the registry key.
//The CWinApp destructor will free the memory.
m_pszRegistryKey=_tcsdup(_T("HKEY_CURRENT_USER\\Software\\mycompany\\myapp\\thissection\\thisvalue"));

Nibu thomas
Software Developer

Faqs by Michael dunn

Re: How to change the default registry root

Sarvan AL7-May-06 23:11

Sarvan AL

7-May-06 23:11

Hi Nibu,

Changing "m_pszRegistryKey" value, remains under the hierarchy "HKEY_CURRENT_USER\Software\". If I set this member variable with "HKEY_CURRENT_USER\\Software\\mycompany", the toolbar status is here:

HKEY_CURRENT_USER\\Software\\HKEY_CURRENT_USER\\Software\\mycompany

It not at all changing the root. It has same functionality of SetRegistryKey(..).

Kindly suggest me a path to go ahead.
Sarvan AL

Re: How to change the default registry root

Nibu babu thomas7-May-06 23:19

Nibu babu thomas

7-May-06 23:19

The root is hard coded. So it will be fixed. One option is to override the GetAppRegistryKey function of CWinApp. The root key is hard coded here. So overriding it and returning a valid key (i.e. your key) will help.

Note: From here on this will be the default key for the application.

The function signature is as follows:

HKEY GetAppRegistryKey();

This is the function that returns the valid key to the application. Only problem being that it's not a virtual function. Frown | :(

So if you start using it from a derived class casted to a base class it won't work.

So calls like AfxGetApp()->WriteProfileString(...) won't work as it will call CWinApp implementation. Cast it to appropriate class and use it.

Nibu thomas
Software Developer

Faqs by Michael dunn

Re: How to change the default registry root

Sarvan AL8-May-06 0:08

Sarvan AL

8-May-06 0:08

Hi Nibu,

Since I am a newbie to Windows Registry Handling, I am not able to grasp the things exactly. If you could explain me in detail, I'd be grateful. I'd like to know, what is happening behind HKCU and HKLM. Is it very hard to make the UI settings common to all the users?

Thanks for spending your precious time for me.

Sarvan AL

Re: How to change the default registry root

Nibu babu thomas8-May-06 0:15

Nibu babu thomas

8-May-06 0:15

Sarvan AL wrote:
Since I am a newbie to Windows Registry Handling

Then it's trouble. You'll have to learn first. Coz registry is very sensitive to changes. Any wrong action is catastrophic. It could take the entire OS down.

Sarvan AL wrote:
I am not able to grasp the things exactly

Only in the beginning.

Sarvan AL wrote:
I'd like to know, what is happening behind HKCU and HKLM.

Nothing special is going on.

Sarvan AL wrote:
Is it very hard to make the UI settings common to all the users?

Not at all. But first learn how to work with the registry.

Microsoft has provided this set of functions(WriteProfileString is one of them) so that users don't have to break their head writing and reading values from the registry. There are some easy functions for manipulation of registry. Look at what Ganesh said.

All the best.

Nibu thomas
Software Developer

Faqs by Michael dunn

Re: How to change the default registry root

Sarvan AL8-May-06 0:58

Sarvan AL

8-May-06 0:58

Hi Nibu,

I really agree with you. As you said, Windows Registry is very sensitive. That's why I didn't want to do anything trial and error. Let me learn the basics first.

Thanks for your suggestion.

Sarvan AL

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