C / C++ / MFC Discussion Boards

Raza568014-Sep-05 0:19

14-Sep-05 0:19

my plotting application draws data in a window 400 pixels high 600 pxl wide.....x axis represents seconds(1 sec=2 pixel) how to scale the y-axis to plot larger values larger than 400,

thanks

Re: scaling.....help

Bob Stanneveld14-Sep-05 0:51

Bob Stanneveld

14-Sep-05 0:51

Hello,

The following formula will help you to determine the amount of y - value amounts per pixel you need to plot your largest value:

ValuesPerPixel = Height / (MaxValue /* + spacing */)

You must wonder why to add a spacing. This is because you don't want too look that your graph goes out of the screen. You want to top to be clearly visible.

Hope this helps.

Behind every great black man...
... is the police. - Conspiracy brother

Blog[^]

Backing up the windows Registry

rajeevktripathi14-Sep-05 0:17

rajeevktripathi

14-Sep-05 0:17

Hi All

I am willing to take the back up of registry (Key, Subkeys & Data) to other place(it may be hard disk, CD\DVD, LAN or any other media). also restore it to any specified location.

How will I do this?

What is the path where registry entries are stored?

Please Reply.

Thanks & Regards.

Re: Backing up the windows Registry

22491714-Sep-05 1:31

224917

14-Sep-05 1:31

rajeevktripathi wrote:
What is the path where registry entries are stored?

%windir%\system.dat
%windir%\user.dat

Your explorer may not show it by default unless you set to view hidden and system files through folder options-View

suhredayan
There is no spoon.

Re: Backing up the windows Registry

ThatsAlok14-Sep-05 1:44

ThatsAlok

14-Sep-05 1:44

suhredayan® wrote:
%windir%\system.dat
%windir%\user.dat

I can't find these files in my Computer.. my OS: Windows 2000 professional

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

Re: Backing up the windows Registry

22491714-Sep-05 2:18

224917

14-Sep-05 2:18

ThatsAlok wrote:
I can't find these files in my Computer.. my OS: Windows 2000 professional

For win2000 it seems to be in a different way.

Hope this[^] link helps.

suhredayan
There is no spoon.

-- modified at 8:25 Wednesday 14th September, 2005

Re: Backing up the windows Registry

rajeevktripathi14-Sep-05 2:35

rajeevktripathi

14-Sep-05 2:35

Thanks for these replies......

Infact now I am able to read & enumerate all the sub keys and also data value.

Now the problem is that how could I save it to a file (as regedit editor shows) and again restore it to its original location?

Please reply.

Once agin thanks.

Re: Backing up the windows Registry

David Crow14-Sep-05 3:22

David Crow

14-Sep-05 3:22

rajeevktripathi wrote:
Now the problem is that how could I save it to a file (as regedit editor shows) and again restore it to its original location?

Use RegSaveKey() and RegRestoreKey() for this.

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Re: Backing up the windows Registry

David Crow14-Sep-05 3:16

David Crow

14-Sep-05 3:16

Look in your C:\Documents and Settings\ folder.

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Re: Backing up the windows Registry

ThatsAlok14-Sep-05 18:10

ThatsAlok

14-Sep-05 18:10

DavidCrow wrote:
Look in your C:\Documents and Settings\ folder.

Is it ntuser.dat file

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

Re: Backing up the windows Registry

rajeevktripathi14-Sep-05 18:49

rajeevktripathi

14-Sep-05 18:49

Thanks for these replies

Please tell me that how could I take bake up of registry and again restore it,

Please reply.

Thanks & Regards

Re: Backing up the windows Registry

David Crow15-Sep-05 3:10

David Crow

15-Sep-05 3:10

ThatsAlok wrote:
Is it ntuser.dat file

Of course. What did you expect with Windows 2000 Pro? Those other .dat files you referenced are for Windows 9x and Me.

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Re: Backing up the windows Registry

ThatsAlok15-Sep-05 3:36

ThatsAlok

15-Sep-05 3:36

DavidCrow wrote:
Of course. What did you expect with Windows 2000 Pro?

thanks, Sir, could you provide me any link demonstarting the structure of registry stored in dat file.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

Re: Backing up the windows Registry

David Crow19-Sep-05 3:19

David Crow

19-Sep-05 3:19

Funny you should ask. I just read such a magazine article just a few weeks ago that went into painful detail how the registry was laid out. Unfortunately, I can't find that magazine. I've looked through all of my magazines and my browser history but I can't find it. That's so aggravating. Frown | :(

If I stumble across it in the future, I'll let you know.

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Re: Backing up the windows Registry

ThatsAlok19-Sep-05 3:27

ThatsAlok

19-Sep-05 3:27

DavidCrow wrote:
f I stumble across it in the future, I'll let you know.

I will Wait Smile | :)

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

Windows Service with network access

Anonymous14-Sep-05 0:05

Anonymous

14-Sep-05 0:05

I am creating a service which tries to access some files on a remote computer.
But seems my service has not right to access the files.

Can anybody suggest a method to solve this problem or give me some sample to refer to?

thanks in advance~

Re: Windows Service with network access

22491714-Sep-05 1:22

224917

14-Sep-05 1:22

By default any service is registered to run as a special user called "SYSTEM", but this user does not have access to network resource. So you can register your service to run as a different user when you create it using CreateService(). the following two parameters of the function will do the trick I guess.
LPCTSTR lpServiceStartName,
LPCTSTR lpPassword

Otherwise you can manually change the user name after its created also using SCM->"Your Service"->Properties->Log on->This Account.

suhredayan
There is no spoon.

About Cursor Blinking : Plz Help

parims13-Sep-05 23:53

parims

13-Sep-05 23:53

I developed one Schduler application ,
In which I used OnTimer() function to popup the messages to
a particular given time.
Cursor is blinking when the application is running.
When I move the cursor on to appli it is blinking .
Plz Give Solution very Urgently.

Praveen Chowdam Kumar

Re: About Cursor Blinking : Plz Help

Nishad S14-Sep-05 0:12

Nishad S

14-Sep-05 0:12

Can you show code of OnTimer and OnPaint with details?

Re: About Cursor Blinking : Plz Help

parims14-Sep-05 0:38

parims

14-Sep-05 0:38

n CString sql,sDate;

/*CString sDriver = "MICROSOFT ACCESS DRIVER (*.mdb)";

CMyTabExampleApp *pApp = (CMyTabExampleApp *)AfxGetApp();
*/

CDatabase db;
db.OpenEx("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=c:\\mydabase.mdb;DSN=MyDsnName",CDatabase::noOdbcDialog);

CRecordset recset( &db);

CTime t;
CTime s=t.GetCurrentTime();
CString strDate,strTime;
strDate.Format("%d-%d-%d",s.GetDay(),s.GetMonth(),s.GetYear());
strTime.Format("%d:%d:%d",s.GetHour(),s.GetMinute(),s.GetSecond());

sql = "select TaskType, TaskDetails, StartDate,SnoozeTime from mytable where StartDate ='"+strDate+"' and SnoozeTime = '"+strTime+"'";

recset.Open(CRecordset::forwardOnly,sql,CRecordset::dynaset);

//MessageBox("READING DB");
CString tasktype,taskdetails;

while(!recset.IsEOF())
{
recset.GetFieldValue("TaskType",tasktype);
recset.GetFieldValue("TaskDetails",taskdetails);

recset.MoveNext();

MessageBox(tasktype + "\n\n"+ taskdetails);
if(tasktype=="APPLICATION")
{

CSnoozeAppli objappli;
objappli.sTaskDetails = taskdetails;
objappli.DoModal ();

}

else
{

CSnoozeMsg dlg;
dlg.sTaskDetails =taskdetails;

dlg.DoModal();

}

}
db.Close();

SetTimer(100,1000,NULL);

CDialog::OnTimer(nIDEvent);

Praveen

problem getting imported function name

gamitech13-Sep-05 23:38

gamitech

13-Sep-05 23:38

I have application that scans for files (exe's and dll's) and looks up thei import table.

I have managed to see what functions they import with IMAGE_NT_HEADERS IMAGE_IMPORT_HEADERS IMAGE_THUNK_DATA.
i compare the c***ion pointer from
pThunk->u1.FisrtFunction with my function loaded with GetProcaAdress()
it works fine but how do I get the function name from IMAGE_THUNK_DATA structure
i've tried
WORD hint=(WORD)&pThunk[l]->u1.AddressOfData->Hint;
PSTR FNAME=(PSTR)((BYTE *)hMod+pThunk[l]->u1.AddressOfData->Name[hint]);

doesn't work what is the correct combination ?

gabby

Refreshing Dialog Window(more explanation)

a_david12313-Sep-05 23:38

a_david123

13-Sep-05 23:38

Respected All

I already sent my query to this forum but still no +ve response.I cant sent Source Code because too lengthy.
------------------------------------------------------------------
Actually I have a number of bitmaps that are listed in a ListBox, when i executed my program then on first Dialog Box a listBox came in and i select any one bitmap from the list and the bitmap displayed along with respective data on Bitmap on different position usind dc.textout()function in 2nd dialog box which i have already created.

Now when I close the 2nd dialog window then the first still exist there and I can select another bitmap to display but when i select another bitmap from the listbox then the selected bitmap has been displayed but the respective data that should be displayed on different position can't dispalyed and show an error that debug it.

I did not load bitmap in OnPaint() function but actually i am loading in 2nd class.

Hope my expalnation will help u people.

david

Re: Refreshing Dialog Window(more explanation)

khan++14-Sep-05 0:09

khan++

14-Sep-05 0:09

Handle the WM_CLOSE message of the second dialog. Just Hide the dialog instead of destroying it, like: ShowWindow(SW_HIDE); Also handle the OnOK() and OnCancel() functions, so that the dialog cannot be destroyed.

Create the second dialog in the OnInitDialog() of the first dialog. Keep the handle of the second dialog as a member variable in the first class, like:
CSecondDialog m_SecondDialog;

In the OnInitDialog() of the first:
m_SecondDialog.Create(IDD_WHATEVER,this);

When you need to show the second dialog, just show it:
m_SecondDialog.ShowWindow(SW_SHOW);

this is this.

Drag and Drop

Hachaso13-Sep-05 23:32

Hachaso

13-Sep-05 23:32

Hi!

I'm trying to find an article of any good example of how to implement a drag and drop Button Control. I want this button to be dragged and across the Dialog and then dropped on another buttun which generates a MessageBox saying that Drag And Drop works. Should be simple but I can't find any good information or anyone that can help me out.

Maybe dragging and dropping an image would make it more simple.
Or any other type of Control.
Every example I get, is of dragging items in a TreeCtrl or just text in an Edit Control. I want the whole Control to be dragged.

Please Help!

Problem with FileIOCompletionRoutine ???

HumanOsc13-Sep-05 23:08

HumanOsc

13-Sep-05 23:08

Hello...

I like to implement WriteFileEx / ReadFileEx in one of my classes...

Is there any safe way to implement LPOVERLAPPED_COMPLETION_ROUTINE as a (non static) member function ? D'Oh! | :doh:

Thx...

-- modified at 5:09 Wednesday 14th September, 2005

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