Re: How to change the default registry root - C / C++ / MFC Discussion Boards

Sarvan AL7-May-06 21:14

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

Re: How to change the default registry root

Nibu babu thomas8-May-06 1:03

Nibu babu thomas

8-May-06 1:03

Sarvan AL wrote:
Let me learn the basics first.

Great! It's very easy. I would recommend open up the registry and see what is inside and understand why it is there.

Sarvan AL wrote:
As you said, Windows Registry is very sensitive.

Yes it is! But it's a safe approach to use WriteProfileString,... and others in that group.

Sarvan AL wrote:
That's why I didn't want to do anything trial and error.

Never! First Back Up Smile | :)

Nibu thomas
Software Developer

Faqs by Michael dunn

Re: How to change the default registry root

Ganesh_T7-May-06 22:13

Ganesh_T

7-May-06 22:13

Use RegCreateKey to creaet the key under any root. Just you have to specify
HKLM_LOCAL_MACHINE and other parameters

You can set values by RegSetValue or RegSetValueEx
Cab get value by : RegQueryValue or RegQueryValueEx.

you can ermove entry by RegDeleteKey and RegDeleteValue.

Cheers
"Peace of mind through Technology"

Set msflexgrid cells WordWrap

zeus_master7-May-06 20:55

zeus_master

7-May-06 20:55

would you please tell me how to set the meflexgrid cell wordwrap?

CMSFlexGrid m_flexgrid;

though I add "m_flexgrid.SetWordWrap(true);" in the code add set the msflexgrid wordwrap true in property tabel, It still can't work.

why? Cry | :((

Re: Set msflexgrid cells WordWrap

zeus_master7-May-06 22:01

zeus_master

7-May-06 22:01

i found it can work with only where there is a space" ";
such as CString str="afasdfwe adf adsf efs dfe asfe af";
wordwrap occurs at the space character" "; Sniff | :^)

if the CString str ="adfasdfewfwegfregergruwergrgqa";
why can't the wordwrap function work?

Re: Set msflexgrid cells WordWrap

Nibu babu thomas7-May-06 22:12

Nibu babu thomas

7-May-06 22:12

zeus_master wrote:
if the CString str ="adfasdfewfwegfregergruwergrgqa";

Where should it break? Smile | :)

Nibu thomas
Software Developer

Faqs by Michael dunn

Re: Set msflexgrid cells WordWrap

zeus_master7-May-06 23:35

zeus_master

7-May-06 23:35

anywhere, depends on the width of the cells?

Adding Items ti List control

parichaybp7-May-06 20:26

parichaybp

7-May-06 20:26

Hi ,

From the below code it displays the file name on the output screen,can anyone please tell how to add them to List box ??

I have list box IDC_OUTPUT CListCtrl m_output.
-----------------------------------

if (e != NULL) {
readFiles (e->left);
fp = fopen (e->filename, "r");
fnum++;
if ((s = (char*)strrchr(e->filename, '/')) == NULL)
cout << e->filename; //Prints file name
else
cout << e->filename; //Prints File name
insert (fnum, e->filename);
if (fp) {
wds = getWord (fp,fnum);
}
cout << " (" << wds << " words)" << endl; //Prints number of words
fclose (fp);
------------------------------------

Regards,
Parichay.

Re: Adding Items ti List control

voorugonda prashanth7-May-06 20:44

voorugonda prashanth

7-May-06 20:44

hi parichaya,

u want to add to ListBox or ListControl?

r u from AP?

Re: Adding Items ti List control

parichaybp7-May-06 20:50

parichaybp

7-May-06 20:50

Hi,

its List Control.

I am from Bangalore.

Re: Adding Items ti List control

voorugonda prashanth7-May-06 23:37

voorugonda prashanth

7-May-06 23:37

hii,
where r u working in b'lore?

Re: Adding Items ti List control

parichaybp7-May-06 23:39

parichaybp

7-May-06 23:39

Hey i am nt working,i am doing my MCA project work.

Re: Adding Items ti List control

voorugonda prashanth7-May-06 23:43

voorugonda prashanth

7-May-06 23:43

good.
may i know on which project u r doing?
ur name?

Re: Adding Items ti List control

Hamid_RT7-May-06 20:46

Hamid_RT

7-May-06 20:46

CListBox or CListCtrl?

Re: Adding Items ti List control

parichaybp7-May-06 20:48

parichaybp

7-May-06 20:48

Hi,
Thanks for the reply,

its CListCtrl,

Re: Adding Items ti List control

Nibu babu thomas7-May-06 20:49

Nibu babu thomas

7-May-06 20:49

Use InsertItem of CListCtrl.

There is an example in MSDN related to this. Please look up InsertItem. I guess here you will have to use the report style(LVS_REPORT).

Nibu thomas
Software Developer

Faqs by Michael dunn

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