C / C++ / MFC

David Crow18-Dec-06 2:44

18-Dec-06 2:44

Bravoone_2006 wrote:
for(int i=0; i<m_list.GetItemCount();i++)
...
i--;

Notice anything wrong with this?

Bravoone_2006 wrote:
CMainSpace *pMainSpace = new CMainSpace;

It is not necessary to make this a pointer. Remove the new and delete calls.

Bravoone_2006 wrote:
pMainSpace->m_sTextDatabase.Empty();
pMainSpace->m_sTextDatabase1.Empty();
pMainSpace->m_sTextDatabase2.Empty();
pMainSpace->m_sTextDatabase3.Empty();

The calls to Empty() are not necessary.

Bravoone_2006 wrote:
while (!pBun.IsEOF())

I do not see anything in the while loop that is advancing the pBun object to the next record. Have you ensured that the while loop terminates.

Aside from the logic errors, what exactly are you trying to accomplish here?

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Bravoone_200618-Dec-06 19:23

Bravoone_2006

18-Dec-06 19:23

All i want is to Edit some fields !
How? i have done what you say but no change !
... how can i terminate the while loop , and where i must do in while pBun.MoveNext();?

Bravoone

David Crow19-Dec-06 2:44

19-Dec-06 2:44

Bravoone_2006 wrote:
How? i have done what you say but no change !

None of my suggestions had anything to do with "editing fields." I would suggest posting your modified code snippet (please use the <pre> tags for this), and the results it is producing.

Bravoone_2006 wrote:
how can i terminate the while loop ,

What is the while loop supposed to be doing?

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Mark Salsbery15-Dec-06 5:42

Mark Salsbery

15-Dec-06 5:42

How long does a SQL statement have to be to be too long? 64K? 1MB?
Do you have 400,000 records or 400,000 columns?
I guess the real question is - How many times are you going to ask this question without providing
any information so someone can try to help you? Smile | :)

Data Packets sent via UDP don't arrive seperately. 5ms gap doesn´t work

Hamid_RT15-Dec-06 18:22

Hamid_RT

15-Dec-06 18:22

1MB?

and I think you guess is right Big Grin | :-D

WhiteSky

kletteroli14-Dec-06 23:17

kletteroli

14-Dec-06 23:17

Hello together!
I run a hexapod / stewart platform, which receives its position data from a computer that acts as a server. I have put up a direct LAN connection (100Mbit/s) between this host and the computer on which we will run all the simulation software for our project. I want to transmitt the new position data (36 bytes)every 5 or better every 2 ms. Therefor I planed to use UDP and I used some code I found here. By now the packets I sent only arrive seperately if I transmitt the packets with 100Hz. A higher pulse seems not possible. I already changed the MTU to 70....

If you please have any hint...
Thanks a lot and kind regards.
Oli

Re: Data Packets sent via UDP don't arrive seperately. 5ms gap doesn´t work

Mark Salsbery15-Dec-06 5:47

Mark Salsbery

15-Dec-06 5:47

kletteroli wrote:
By now the packets I sent only arrive seperately if I transmitt the packets with 100Hz.

Huh? And if you send them faster they arrive how? Why change the MTU? You should easily be able
to send this data using UDP (even TCP).

Something's up in your communication code.

range

radhika2814-Dec-06 23:08

radhika28

14-Dec-06 23:08

I want to add items between two dates.I used CTime class to find the two dates(current and past). i want to add the list of url's i opened that range of time.Everything is fine but how can we make the condition on times for ex: for or while or if etc

Rage15-Dec-06 1:35

Rage

15-Dec-06 1:35

CTime has normal add and compare operators, so you can loop on a CTime the same way you would do with an integer.

~RaGE();

I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus

Do not feed the troll ! - Common proverb

Bravoone_200615-Dec-06 2:05

Bravoone_2006

15-Dec-06 2:05

CTime CurTime = CTime::GetCurrentTime();
CString sTime1,sHour,sTime2;

sTime1.Format("%d/%d/%d",CurTime.GetYear(),CurTime.GetMonth(),CurTime.GetDay());
sTime2.Format"%d/%d/%d", .......);

m_time1.SetWindowText(sTime1);
m_time2.SetWindowText(sTime2);
if(sTime1 > sTime2)
{
//Do something
//lets say m_time3.SetWindowText("Real time");
}
UpdateData(FALSE);
Smile | :)

Bravoone

radhika2815-Dec-06 2:30

radhika28

15-Dec-06 2:30

I have converted file time to system time using the function,
FileTimeToSystemTime(&suURL.ftLastVisited,&st);
Now can i get the time in CTime from the above line.I am able to display the string value for that particular systemtime.otherwise how can we convert CString to CTime.

Thanks

David Crow15-Dec-06 4:03

Is there a VC++ equivalent to the Visual Basic "CStr" keyword?

15-Dec-06 4:03

radhika28 wrote:
otherwise how can we convert CString to CTime.

If the time is in a standard format, use COleDateTime::ParseDateTime(). The CTime class is too limiting.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

dharani_3d14-Dec-06 23:05

Re: Is there a VC++ equivalent to the Visual Basic "CStr" keyword?

14-Dec-06 23:05

Is there a VC++ equivalent to the Visual Basic "CStr" keyword?

dharani

prasad_som14-Dec-06 23:17

Re: Is there a VC++ equivalent to the Visual Basic "CStr" keyword?

14-Dec-06 23:17

You may use CString::Format for this purpose.

Prasad
Notifier using ATL | Operator new[],delete[][^]

dharani_3d14-Dec-06 23:27

Re: Is there a VC++ equivalent to the Visual Basic "CStr" keyword?

14-Dec-06 23:27

For s = 1 To 10
rec(s) = " #" & CStr(rs2(0)) & CStr(rs2(1))
msg4 = msg4 & rec(s)
rs2.MoveNext
Next s

how can i convert this in VC++?

dharani

dharani_3d14-Dec-06 23:29

Re: Is there a VC++ equivalent to the Visual Basic "CStr" keyword?

14-Dec-06 23:29

For s = 1 To 10
rec(s) = " #" & CStr(rs2(0)) & CStr(rs2(1))
msg4 = msg4 & rec(s)
rs2.MoveNext
Next s
where rs is a recordset which has only two columns..

dharani

prasad_som14-Dec-06 23:36

Re: Is there a VC++ equivalent to the Visual Basic "CStr" keyword?

14-Dec-06 23:36

dharani_3d wrote:
rec(s) = " #" & CStr(rs2(0)) & CStr(rs2(1))

What does, rs2(0),rs2(2) would return ?
Say its returning int.
In that case,
you use.

CString sTemp;
sTemp.Format(_T("%d%d"),rs2(0),rs2(1));

Prasad
Notifier using ATL | Operator new[],delete[][^]

David Crow15-Dec-06 4:07

Is there any possiblity to declare a variable as a Variant and a Variant array in VC++?

15-Dec-06 4:07

There's not a direct replacement for it because CStr() returns a different value depending on the type of value sent to it. For example, it might return True/False if the value is Boolean, or a short date if the value is a Date.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

dharani_3d14-Dec-06 23:01

Re: Is there any possiblity to declare a variable as a Variant and a Variant array in VC++?

14-Dec-06 23:01

Hello everybody,
Is there any possiblity to declare a variable as a Variant and a Variant array?
for example in VB, we can declare

Dim rec(80) As Variant //array
Dim msg As Variant

Is there any possibility to declare like this Visual C++?

Likewise in VB,

'msg' which holds some variant value and I can display it in text box.

Text1.Text = msg3
How can I display the variant value in edit box?

Please reply me.. thanks in advance.

Dharani

prasad_som14-Dec-06 23:26

14-Dec-06 23:26

dharani_3d wrote:
Is there any possiblity to declare a variable as a Variant and a Variant array?

SAFEARRAY and VARIANT are its replacement in VC++.

dharani_3d wrote:
Dim rec(80) As Variant //array
Dim msg As Variant

Is there any possibility to declare like this Visual C++?

Likewise in VB,

'msg' which holds some variant value and I can display it in text box.

Text1.Text = msg3
How can I display the variant value in edit box?

I'm not sure, but in VB variants are used for representing array.
So, its char array in terms of C++.
So you can use char array or CStringArray as its VC eqvivalent.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Printer Monitoring

pnkj14-Dec-06 22:54

pnkj

14-Dec-06 22:54

Dear All

I have to monitor a printer, and for that I have to use FindFirstPrinterChangeNotification and FindNextPrinterChangeNotification APIs. For this I have written the code, which is below. Some problems that i am facing with this code are also stated below (after the code). It will be great you can shed some light on the issues I am facing. It will be of great help.

void StartNotifications(void)
{
HANDLE hPrinter = NULL;
PRINTER_NOTIFY_OPTIONS * p_NotifyOptions = NULL;
PRINTER_NOTIFY_OPTIONS_TYPE arr_NotifyOptionsType[2];
PWORD pPrinterFields;
WORD arrJobFields[100];
HANDLE hwndNotify = NULL;
DWORD dwChanged = 0;
int i;
FILE * pFile;
TCHAR * pBuf;
DWORD * adwData;
TCHAR arrBuf[50];
pFile = _tfopen(_T("C:\\PrinterNotifications.txt"), _T("a+"));
if(pFile)
{
MessageBox(NULL, _T("Opened"), _T("File Status"), MB_OK);
}

PRINTER_NOTIFY_INFO * p_OutPut = NULL;

if(OpenPrinter(_T("\\\\NECHCLSTDC\\HP LaserJet 4345 mfp PCL 5e"),
&hPrinter, NULL))
{
i=0;
arrJobFields[i++] = JOB_NOTIFY_FIELD_PRINTER_NAME;
arrJobFields[i++] = JOB_NOTIFY_FIELD_MACHINE_NAME;
arrJobFields[i++] = JOB_NOTIFY_FIELD_PORT_NAME;
arrJobFields[i++] = JOB_NOTIFY_FIELD_USER_NAME;
arrJobFields[i++] = JOB_NOTIFY_FIELD_NOTIFY_NAME;
arrJobFields[i++] = JOB_NOTIFY_FIELD_DATATYPE;
arrJobFields[i++] = JOB_NOTIFY_FIELD_PRINT_PROCESSOR;
arrJobFields[i++] = JOB_NOTIFY_FIELD_PARAMETERS;
arrJobFields[i++] = JOB_NOTIFY_FIELD_DRIVER_NAME;
arrJobFields[i++] = JOB_NOTIFY_FIELD_STATUS_STRING;
arrJobFields[i++] = JOB_NOTIFY_FIELD_DOCUMENT;
arrJobFields[i++] = JOB_NOTIFY_FIELD_PRIORITY;
arrJobFields[i++] = JOB_NOTIFY_FIELD_POSITION;
arrJobFields[i++] = JOB_NOTIFY_FIELD_START_TIME;
arrJobFields[i++] = JOB_NOTIFY_FIELD_UNTIL_TIME;
arrJobFields[i++] = JOB_NOTIFY_FIELD_TIME;
arrJobFields[i++] = JOB_NOTIFY_FIELD_TOTAL_PAGES;
arrJobFields[i++] = JOB_NOTIFY_FIELD_PAGES_PRINTED;
arrJobFields[i++] = JOB_NOTIFY_FIELD_TOTAL_BYTES;
arrJobFields[i++] = JOB_NOTIFY_FIELD_BYTES_PRINTED;

arr_NotifyOptionsType[0].Type = JOB_NOTIFY_TYPE ;
arr_NotifyOptionsType[0].pFields = arrJobFields;
arr_NotifyOptionsType[0].Count = 20;

pPrinterFields = (PWORD)malloc(2 * sizeof(WORD));
pPrinterFields[0] = PRINTER_NOTIFY_FIELD_PRINTER_NAME;
pPrinterFields[1] = PRINTER_NOTIFY_FIELD_AVERAGE_PPM;

arr_NotifyOptionsType[1].Type = PRINTER_NOTIFY_TYPE ;
arr_NotifyOptionsType[1].pFields = pPrinterFields;
arr_NotifyOptionsType[1].Count = 2;

p_NotifyOptions = new PRINTER_NOTIFY_OPTIONS;

p_NotifyOptions->Count = 2;
p_NotifyOptions->Version = 2;
p_NotifyOptions->pTypes = arr_NotifyOptionsType;
p_NotifyOptions->Flags = PRINTER_NOTIFY_OPTIONS_REFRESH;

if((hwndNotify = FindFirstPrinterChangeNotification(hPrinter,
PRINTER_CHANGE_ALL, 0, p_NotifyOptions)) != INVALID_HANDLE_VALUE)
{
while(hwndNotify != INVALID_HANDLE_VALUE)
{
if(WaitForSingleObject(hwndNotify, INFINITE) == WAIT_OBJECT_0)
{

FindNextPrinterChangeNotification(hwndNotify, &dwChanged,
(LPVOID)p_NotifyOptions, (LPVOID*)&p_OutPut);
for (int i=0;(i<p_output->Count) && ;i++)
{
pBuf = (TCHAR*)(p_OutPut->aData[i].NotifyData.Data.pBuf);
adwData = p_OutPut->aData[i].NotifyData.adwData;
switch(p_OutPut->aData[i].Type)
{
case JOB_NOTIFY_TYPE:
{
//printf("\tジョブ通知(no.%d, id:%d)...", i,
p_OutPut->aData[i].Id);
switch(p_OutPut->aData[i].Field)
{
case JOB_NOTIFY_FIELD_PRINTER_NAME:
_fputts(_T("Printer Name "), pFile);
_fputts(pBuf, pFile);
_fputtc(_T('\n'), pFile);
break;
case JOB_NOTIFY_FIELD_MACHINE_NAME:
_fputts(_T("machine Name "), pFile);
_fputts(pBuf, pFile);
_fputtc(_T('\n'), pFile);
break;
case JOB_NOTIFY_FIELD_PORT_NAME:
_fputts(_T("Port Name "), pFile);
_fputts(pBuf, pFile);
_fputtc(_T('\n'), pFile);
break;
case JOB_NOTIFY_FIELD_USER_NAME:
_fputts(_T("User Name "), pFile);
_fputts(pBuf, pFile);
_fputtc(_T('\n'), pFile);
break;
case JOB_NOTIFY_FIELD_NOTIFY_NAME:
_fputts(_T("Notify Name "), pFile);
_fputts(pBuf, pFile);
_fputtc(_T('\n'), pFile);
break;
case JOB_NOTIFY_FIELD_DATATYPE:
_fputts(_T("Data Type "), pFile);
_fputts(pBuf, pFile);
_fputtc(_T('\n'), pFile);
break;
case JOB_NOTIFY_FIELD_PRINT_PROCESSOR:
_fputts(_T("Print Processor "), pFile);
_fputts(pBuf, pFile);
_fputtc(_T('\n'), pFile);
break;
case JOB_NOTIFY_FIELD_PARAMETERS:
_fputts(_T("Parameters"), pFile);
_fputts(pBuf, pFile);
_fputtc(_T('\n'), pFile);
break;
case JOB_NOTIFY_FIELD_DRIVER_NAME:
_fputts(_T("Driver Name "), pFile);
_fputts(pBuf, pFile);
_fputtc(_T('\n'), pFile);
break;
case JOB_NOTIFY_FIELD_DEVMODE:
// DEVMODE
break;
case JOB_NOTIFY_FIELD_STATUS:
if(adwData[0] & JOB_STATUS_PAUSED)
{
_fputts(_T("Status = "), pFile);
_fputts( _T("Paused"), pFile);
_fputtc(_T('\n'), pFile);
}
if(adwData[0] & JOB_STATUS_ERROR)
{
_fputts(_T("Status = "), pFile);
_fputts( _T("Error"), pFile);
_fputtc(_T('\n'), pFile);
}
if(adwData[0] & JOB_STATUS_DELETING)
{
_fputts(_T("Status = "), pFile);
_fputts( _T("Deleting"), pFile);
_fputtc(_T('\n'), pFile);
}
if(adwData[0] & JOB_STATUS_SPOOLING)
{
_fputts(_T("Status = "), pFile);
_fputts( _T("Spooling"), pFile);
_fputtc(_T('\n'), pFile);
}
if(adwData[0] & JOB_STATUS_PRINTING)
{
_fputts(_T("Status = "), pFile);
_fputts( _T("Printing"), pFile);
_fputtc(_T('\n'), pFile);
}
if(adwData[0] & JOB_STATUS_OFFLINE)
{
_fputts(_T("Status = "), pFile);
_fputts( _T("Offline"), pFile);
_fputtc(_T('\n'), pFile);
}
if(adwData[0] & JOB_STATUS_PAPEROUT)
{
_fputts(_T("Status = "), pFile);
_fputts( _T("PaperOut"), pFile);
_fputtc(_T('\n'), pFile);
}

if(adwData[0] & JOB_STATUS_PRINTED)
{
_fputts(_T("Status = "), pFile);
_fputts( _T("Printed"), pFile);
_fputtc(_T('\n'), pFile);
}
if(adwData[0] & JOB_STATUS_DELETED)
{
_fputts(_T("Status = "), pFile);
_fputts( _T("Deleted"), pFile);
_fputtc(_T('\n'), pFile);
}
if(adwData[0] & JOB_STATUS_BLOCKED_DEVQ)
{
_fputts(_T("Status = "), pFile);
_fputts( _T("Blocked DevQ"), pFile);
_fputtc(_T('\n'), pFile);
}
if(adwData[0] & JOB_STATUS_USER_INTERVENTION)
{
_fputts(_T("Status = "), pFile);
_fputts( _T("User Intervention"), pFile);
_fputtc(_T('\n'), pFile);
}
if(adwData[0] & JOB_STATUS_RESTART)
{
_fputts(_T("Status = "), pFile);
_fputts( _T("Restart"), pFile);
_fputtc(_T('\n'), pFile);
}
break;
case JOB_NOTIFY_FIELD_STATUS_STRING:
{
_fputts(_T("Status String= "), pFile);
_fputts( pBuf, pFile);
_fputtc(_T('\n'), pFile);
}
break;
case JOB_NOTIFY_FIELD_DOCUMENT:
{
_fputts(_T("Document = "), pFile);
_fputts( pBuf, pFile);
_fputtc(_T('\n'), pFile);
}
break;
case JOB_NOTIFY_FIELD_SUBMITTED:
//SYSTEMTIME
break;
case JOB_NOTIFY_FIELD_START_TIME:
memset(arrBuf, _T('\0'), 50);
_stprintf(arrBuf,_T("Start Time: %d:%d\n"), adwData[0]/60,
adwData[0]%60);
_fputts(arrBuf, pFile);
break;
case JOB_NOTIFY_FIELD_UNTIL_TIME:
memset(arrBuf, _T('\0'), 50);
_stprintf(arrBuf,_T("Until Time: %d:%d\n"), adwData[0]/60,
adwData[0]%60);
_fputts(arrBuf, pFile);
break;
case JOB_NOTIFY_FIELD_TIME:
memset(arrBuf, _T('\0'), 50);
_stprintf(arrBuf,_T("Field Time: %d: %d\n"), adwData[0]/60,
adwData[0]%60);
_fputts(arrBuf, pFile);
break;
case JOB_NOTIFY_FIELD_TOTAL_PAGES:
memset(arrBuf, _T('\0'), 50);
_stprintf(arrBuf,_T("Total Pages: %d\n"), adwData[0]);
_fputts(arrBuf, pFile);
break;
case JOB_NOTIFY_FIELD_PAGES_PRINTED:
memset(arrBuf, _T('\0'), 50);
_stprintf(arrBuf,_T("Pages Printed: %d\n"), adwData[0]);
_fputts(arrBuf, pFile);
break;
case JOB_NOTIFY_FIELD_TOTAL_BYTES:
memset(arrBuf, _T('\0'), 50);
_stprintf(arrBuf,_T("Total Bytes: %d\n"), adwData[0]);
_fputts(arrBuf, pFile);
break;
case JOB_NOTIFY_FIELD_BYTES_PRINTED:
memset(arrBuf, _T('\0'), 50);
_stprintf(arrBuf,_T("Bytes Printed: %d\n"), adwData[0]);
_fputts(arrBuf, pFile);
break;
}
break;
}
case PRINTER_NOTIFY_TYPE:
{
}
break;
}
}
}
}
}
else
{
DWORD dwError = GetLastError();
dwError += 0;
}
}
else
{
DWORD dwError = GetLastError();
dwError += 0;
}

}

I dumped the notification data in a file, and had the following
observations:

1. I never received any Status notification for any type of Print job,
i.e be it in EMF format or RAW format. In case of Status String, the
notification was there, but the pBuf was empty. So, how do we receive the status info?

2. In case of print job with EMF data type, the Total Pages and Printed
pages data was received correctly. Same case for Total Bytes and
Printed Bytes.

3. In case of print job with RAW format, Total pages was received with
correct values, but Printed Pages was always recieved with the value 0.
Total Bytes was OK, but at the end of the print job, the Total Bytes
and Printed Bytes were different, the latter being lesser then former.
So, it doesn't help in determining that whether a print job is finished
or not.

Thanks in advance.
Pankaj

Show the hourglass?

bosfan14-Dec-06 22:49

bosfan

14-Dec-06 22:49

Hello,
is here an sample how to show the caret as an hourglass?
In my project is an filter function, that filters items from a CGridCtrl,
and i like to show the caret as an hourglass during this filtering!

Thanks for any help!
break;

Re: Show the hourglass?

prasad_som14-Dec-06 22:52