C / C++ / MFC Discussion Boards

«_Superman_»4-May-05 22:51

4-May-05 22:51

Yes you can. But if you want to create an object of that class, you will need a public static member function in the class to create the object for you.

« Superman »

Re: constructor in private section

Priyank Bolia4-May-05 23:51

Priyank Bolia

4-May-05 23:51

If I want to create an object of that class whose constructor is private and dont want a static member function to create an object then?

http://www.priyank.in/

Re: constructor in private section

Zdeslav Vojkovic5-May-05 0:51

Zdeslav Vojkovic

5-May-05 0:51

you can create a factory class and declare it as a friend of your class. what exactly are you trying to achieve?

Re: constructor in private section

Priyank Bolia5-May-05 2:59

Priyank Bolia

5-May-05 2:59

Trying to achieve nothing. Just finding out the answers, these questions are asked generally everywhere in interviews. Can you do that without a friend class also?

http://www.priyank.in/

Re: constructor in private section

Zdeslav Vojkovic6-May-05 2:12

Zdeslav Vojkovic

6-May-05 2:12

the purpose of private constructors is to make it impossible for clients to call them as they wish. 2 ways to do it should be quite enough, it wouldn't make sense to make them private and provide ten other ways to call them.

Re: constructor in private section

toxcct5-May-05 0:53

toxcct

5-May-05 0:53

yes you can (why couldn't you ?), but the only reason you might want to do this is to let it do some common initializations ; then you could call it from another constructor of the same class...

TOXCCT >>> GEII power
[toxcct][VisualCalc]

How to stop Recording..?

mpallavi4-May-05 22:07

mpallavi

4-May-05 22:07

Hello..
I am using MCI for recording sound.. I am using the sample code given in MSDN for recording.. This allows me to record sound only for specified amount of time.. I want to generalise it so that, recording stops when i click on the stop button..
At present what i am doing is as follows:
void CCNPhoneAdapterDlg::OnRecord()
{
RecordWaveFile(10000);
}

DWORD CCNPhoneAdapterDlg::RecordWaveFile(DWORD dwMilliSeconds)
{

// Begin recording and record for the specified number of
// milliseconds. Wait for recording to complete before continuing.
// Assume the default time format for the waveform-audio device
// (milliseconds).
mciRecordParms.dwTo = dwMilliSeconds;
if (dwReturn = mciSendCommand(wDeviceID, MCI_RECORD,
MCI_TO | MCI_WAIT, (DWORD)(LPVOID) &mciRecordParms))
{
mciSendCommand(wDeviceID, MCI_CLOSE, 0, NULL);
return (dwReturn);
}
// Save the recording to a file named TEMPFILE.WAV. Wait for
// the operation to complete before continuing.
mciSaveParms.lpfilename = "tempfile.wav";
if (dwReturn = mciSendCommand(wDeviceID, MCI_SAVE,
MCI_SAVE_FILE | MCI_WAIT, (DWORD)(LPVOID) &mciSaveParms))
{
mciSendCommand(wDeviceID, MCI_CLOSE, 0, NULL);
return (dwReturn);
}
return (0L);
}
................
Also i want to allow the user to specify the location and file name to store the recorded sound.
Can anyone help me?
Regards
Pallavi

MS Word Automation

Imtiaz Murtaza4-May-05 21:32

Imtiaz Murtaza

4-May-05 21:32

Friends,

I've made an application which is automating MS-Word. I run MS-WORD from my application and my application receives events happening in that instance of MS-Word.

I want to detect keyboard events in that instance of MS word inside my application. Actually i want user to type some string in Word and press some key like Ctrl-A. As such i want MS-Word no notify my application. Is it possible with automation ?? If not then what is the solution.

Imtiaz

How to create this button?

exploreman4-May-05 21:30

exploreman

4-May-05 21:30

like
image link:
http://explorer.10169.net/myquestion.jpg
please help me!

How are you,every one

Re: How to create this button?

includeh105-May-05 0:17

includeh10

5-May-05 0:17

if the button is not on border (NC area), just move it to there by MoveWindow(). otherwise, u need to draw NC area urself to prevent the button from being painted (covered) by default NC drawing.

includeh10

How to execute a data manipulation query

mikobi4-May-05 20:57

mikobi

4-May-05 20:57

I am using Visual C++ 6.0 MFC.
My database in SQL SERVER 2000

How can i Execute a data manipulation query(Delete, insert,update) with OLE DB data access ?
We use OLE DB PROVIDER or CONSUMER ?
And How to do it

I am a beginer

Re: How to execute a data manipulation query

Ansari A. Halim6-May-05 1:36

Ansari A. Halim

6-May-05 1:36

See if this helps u, do some R&D
//include sql.h and sqlext.h

char * strDSN="ICC";
char * strUser="square";
char * strPass="xyz";
char * strSQL = "Select * from INTRA_PMNS";

char * szPMN;
float fVersionNo;
char * szDestinationPath;
szPMN = new char[6];
szDestinationPath = new char[255];

SQLHENV hEnv;
SQLHDBC hDBC;
SQLHSTMT hSTMT;

int iResult;

iResult=SQLAllocHandle(SQL_HANDLE_ENV, NULL, &hEnv);
if(iResult == SQL_SUCCESS || iResult == SQL_SUCCESS_WITH_INFO)
{
iResult = SQLSetEnvAttr(hEnv,SQL_ATTR_ODBC_VERSION,(SQLPOINTER)SQL_OV_ODBC3,SQL_IS_INTEGER);
if(iResult == SQL_SUCCESS || iResult == SQL_SUCCESS_WITH_INFO)
{
iResult=SQLAllocHandle(SQL_HANDLE_DBC, hEnv, &hDBC);
if(iResult == SQL_SUCCESS || iResult == SQL_SUCCESS_WITH_INFO)
{
iResult = SQLConnect(hDBC,(SQLCHAR*)strDSN,SQL_NTS,(SQLCHAR*)strUser,SQL_NTS,(SQLCHAR*)strPass,SQL_NTS);
if(iResult == SQL_SUCCESS || iResult == SQL_SUCCESS_WITH_INFO)
{
iResult=SQLAllocHandle(SQL_HANDLE_STMT, hDBC, &hSTMT);
if(iResult == SQL_SUCCESS || iResult == SQL_SUCCESS_WITH_INFO)
{
iResult = SQLExecDirect(hSTMT,(SQLCHAR *)strSQL,SQL_NTS);
if(iResult == SQL_SUCCESS || iResult == SQL_SUCCESS_WITH_INFO)
{
iResult = SQLFetch(hSTMT);
if(iResult == SQL_SUCCESS || iResult == SQL_SUCCESS_WITH_INFO)
{
SQLINTEGER ret=-1;
{
SQLGetData(hSTMT, 1, SQL_C_CHAR, szPMN, 6, &ret);
SQLGetData(hSTMT, 2, SQL_C_FLOAT, &fVersionNo, 5, &ret);
SQLGetData(hSTMT, 3, SQL_C_CHAR, szDestinationPath, 255, &ret);
}
}
}
}
}
}
}
}

Regards

How to exit from ModalLoop ?

Gopakumar4-May-05 20:28

Gopakumar

4-May-05 20:28

I created a modal dialog box which is a third level child.
I override the CDialog DoModal function and made the first level child as the owner of this modal dialog, so that this dialog will be modal only up to first level. Hence the main dialog can be activated. Before main dialog is getting destroyed, I'm destroying all the child dialogs.

While modal dialog is displaying, if I destroy the main dialog, I'm getting assertion. The problem is modal loop is still valid.
I called the function EndModalLoop() before destroying the dialog window, still the problem exist.
How to stop/exit modal loop ?

Re: How to exit from ModalLoop ?

toxcct5-May-05 0:55

toxcct

5-May-05 0:55

what about EndDialog() ?

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Re: How to exit from ModalLoop ?

Gopakumar5-May-05 20:18

Gopakumar

5-May-05 20:18

EndDilaog() also closes the dialog window but not stop the modal loop.

The combination of EndModalState() and EndModalLoop(ID_CANCEL)will solve this issue.

Is this right way of handling this problem ?
Is any other way we can solve this issue ?

Driver Programming Problem!

Arsalan Malik4-May-05 19:58

Arsalan Malik

4-May-05 19:58

I am writing a smartcard reader driver. Whenever I call any function of smclib, the driver does not loads, not even DriverEntry function is called! I am calling SmartcardInitialize, and all parameters are
correctly initialized. System returns error mesage 2 "The System cannot find the file specified!". I have tried the same driver on Windows XP and Windows 2000, but problem remains same. Can any one tell me what does this error message means, and how to fix it? Confused | :confused:

ARSALAN MALIK

xml file generation

swarnamanoo4-May-05 19:53

swarnamanoo

4-May-05 19:53

Hi all..I would like to store the information regarding the toolbars in an xml file..Can any one help me to proceed further.

Re: xml file generation

Priyank Bolia4-May-05 23:55

Priyank Bolia

4-May-05 23:55

can you elaborate the problem what you exactly want. i think you should check the msxml sdk http://msdn.microsoft.com/library/default.asp?url=/library/en-us/xmlsdk/html/xmmscXML.asp

http://www.priyank.in/

Re: xml file generation

swarnamanoo5-May-05 17:17

swarnamanoo

5-May-05 17:17

Hi,
Thanks for the reply.
I have the toolbar data in my application which is generally stored in the Registry.I want to store the Docking and floating information of the tool bars to be stored in the xml file rather than the registry and when i try to start my application it should be able to load that info from the xml file.Usually CDockState is a an MFC class which is used to store the info reg the docking and floating of the toolbar to the registry.
Swarna

How to disable input focus of a Listbox control

tysh4-May-05 19:45

tysh

4-May-05 19:45

Hello guys!

Need your help again on these:

1. How to disable the input focus of a listbox control in a dialog box.
2. What message is sent to the main dialog box when its listbox control is about to receive an input focus?

Thanks! Smile | :)

Re: How to disable input focus of a Listbox control

David Crow5-May-05 2:48

David Crow

5-May-05 2:48

Check out the WM_SETFOCUS message.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Can't receive IR data on serial port - help me!

hithesh4-May-05 19:42

hithesh

4-May-05 19:42

I am trying to receive the TV remote signal using the ipaq 3115.

The IR port on the pocket pc is Port 3. Its opened and configured. No errors there.

I constantly poll the port for any data. But I am getting none.

Here's my code -

BYTE rx;
int rcd[30];
int i=0;
DWORD dwbytesTransferred=0;
long one;

while(1)
{

one = ReadFile(m_irport, &rx, 1, &dwbytesTransferred, NULL);

if (dwbytesTransferred > 0)
{
rcd[i]=rx;
m_rcv="Data In";
UpdateData(FALSE);
i++;

}
else
{
m_rcv="No Data";
UpdateData(FALSE);
}

}

Any help would be greatly appreciated. Thanks.

-hithesh

Read HL7 Messages

.NetRams4-May-05 19:00

.NetRams

4-May-05 19:00

Hi,
Could anyone help me to parse HL7 Messages

Be simple and Be sample.

840215 - Appending new accelerators to the default table

ilostmyid24-May-05 18:05

ilostmyid2

4-May-05 18:05

hi all
i wrote the following function to append one project's accelerators to another because i thought there was no function doing that. but it has a problem, +10 (something more than 2) is required. why?

status appendAcceleratorsTable(HACCEL &hAccel,LPCTSTR lpszResourceName)<br />
{<br />
	// locate and load new accelerators<br />
	HINSTANCE hInst=AfxFindResourceHandle(lpszResourceName,RT_ACCELERATOR);<br />
	ASSERT(hInst);<br />
	HACCEL hNewAccel=LoadAccelerators(hInst,lpszResourceName);<br />
	ASSERT(hNewAccel);<br />
<br />
	// calculate number of accelerators in both tables<br />
	int numAccel=CopyAcceleratorTable(hAccel,NULL,NP);<br />
	int numNewAccel=CopyAcceleratorTable(hNewAccel,NULL,NP);<br />
<br />
	// allocate a global space to hold both accelerator tables<br />
	LPACCEL lpAccel=(LPACCEL)GlobalAlloc(GPTR,(numAccel+numNewAccel+10)*sizeof(ACCEL));<br />
	ASSERT(!lpAccel);<br />
<br />
	// copy both tables in it<br />
	VERIFY(CopyAcceleratorTable(hAccel,lpAccel,numAccel)==numAccel);<br />
	VERIFY(CopyAcceleratorTable(hNewAccel,lpAccel+numAccel,numNewAccel)==numNewAccel);<br />
<br />
	// remove the previous ones and finalize<br />
	DestroyAcceleratorTable(hNewAccel);<br />
	hNewAccel=CreateAcceleratorTable(lpAccel,numAccel+numNewAccel);<br />
	ASSERT(hNewAccel);<br />
	VERIFY(CopyAcceleratorTable(hNewAccel,NULL,NP)==numAccel+numNewAccel);<br />
	DestroyAcceleratorTable(hAccel);<br />
	hAccel=hNewAccel;<br />
}<br />

Assembly questions

Adam Durity4-May-05 17:58

Adam Durity

4-May-05 17:58

I'm interested in doing some work with Assembly. Does anyone know any good resources on the web for learning Win32 assembly from start to finish (coding to compiling)?

Additionally, I have a dll module that I want to decompile, modify, and recompile. Does anyone know how to do this, or know of resource through which to do it? (This is a module that I will NOT be redistributing, it's for my own tinkering pleasure)

Thanks for the help. Sorry if this is OT.

-- Adam

"If you can't beat your computer in chess, try kickboxing"

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