Re: object for wrapper class [modified] - C / C++ / MFC Discussion Boards

Milton Karimbekallil13-Aug-06 22:41

13-Aug-06 22:41

u can use Sql DMO for backing up sql server db. its a time consuming process which varies depends on the size of the db to be copied. so its better to make the backup once and ync the backup with changes in the actual db in realtime.

cheers ..Milton KB

USB IN Transaction

osfp731-Jul-06 20:40

osfp7

31-Jul-06 20:40

Hi to all
I want to transfer same A/D binary data from a microcontroller to PC, via USB. I have an API function call in C++, that initiates a USB IN transaction with the result the data (64bytes) from controller buffer to be transferred to a buffer in the PC. Because I want the flow of data to be constant I want to device a mechanism in C++, that would call automatically the API function witch initiates the IN transaction, every X milliseconds. I am thinking to use a timer that would produce an event with a constant period. Is this a good method? Anyone have any suggestions?
Thanks Nick

nick

regarding iTunes

Halid Niyaz31-Jul-06 20:12

Halid Niyaz

31-Jul-06 20:12

is there any sample in code project wherein vc++ or c++ is used to consume iTunes SDK? is it necessary that iTunes should be installed in my machine to initialize iTunes SDK? or is it enuf if i have the required dlls registered in place?

vignesh

Using fwrite() correctly?

Lord Kixdemp31-Jul-06 20:05

Lord Kixdemp

31-Jul-06 20:05

Hello everyone!

fwrite((const short*)VER_STR1, 2, 1, file);

VER_STR1 is a #defined constant, so I can't use & after the cast to const short*, and this is C, so I can't use reinterpret_cast<> either... How do I pass just a little 2-byte short to the function? Thanks!

Windows Calculator told me I will die at 28. Frown | :(

Re: Using fwrite() correctly?

User 58385231-Jul-06 21:13

User 583852

31-Jul-06 21:13

if its something like

#define VER_STR1 12

Then in effect you have

fwrite((const short*)12, 2, 1, file);

Which means write the short value stored at memory location 12 which will never work. I dont think you can get the address of a literal.

You'll need something like

const short temp = VER_STR1;

fwrite(&temp, 2, 1, file);

Objects in mirror are closer than they appear

Re: Using fwrite() correctly?

Lord Kixdemp12-Aug-06 12:22

Lord Kixdemp

12-Aug-06 12:22

Oh, sorry for not having answered to this before... I kinda abandoned this project for a while... But thanks though, that worked! Wink | ;)

Windows Calculator told me I will die at 28. Frown | :(

object for wrapper class [modified]

With_problem31-Jul-06 19:36

With_problem

31-Jul-06 19:36

how to declare object for wrapper class in consol based application.
Is it the same :

classname object;

or some other way

2) If i want to design menu in consol based application is that possible?????

-- modified at 2:01 Tuesday 1st August, 2006

Re: object for wrapper class [modified]

Lord Kixdemp31-Jul-06 20:11

Lord Kixdemp

31-Jul-06 20:11

I don't see why it would be different, assuming you're using the same compiler and language... Poke tongue | ;-P

priyanka s wrote:
2) If i want to design menu in consol based application is that possible?????

Nope, sorry... Unless you want to design your own menus out of characters, with pdcurses[^] or something... OMG | :OMG:

-- modified at 2:12 Tuesday 1st August, 2006

Windows Calculator told me I will die at 28. Frown | :(

need help on using VOIP

Kiran Pinjala31-Jul-06 19:13

Kiran Pinjala

31-Jul-06 19:13

Can anybody please show me a way using VOIP in vc++ to send voice files on TCP/IP. Or a guide me to sample which users VOIP.

Thank you

KIRAN PINJARLA

deleting a CStatic object [modified]

SteamEngine31-Jul-06 19:12

SteamEngine

31-Jul-06 19:12

how to delete a CStatic object present on the Client window? wt is the right function?

i have the following things with me:-
1) Pointer to the object
2) coordinates of the window/object
3) hWnd

-- modified at 1:12 Tuesday 1st August, 2006

Re: deleting a CStatic object

Cool Ju31-Jul-06 19:55

Cool Ju

31-Jul-06 19:55

Hi,

You can hide instead of deleting it using ShowWindow(SW_HIDE). Just a suggestion.

Adios,
Cool Ju Cool | :cool:

Dream Ur Destiny

Re: deleting a CStatic object

_AnsHUMAN_ 31-Jul-06 22:07

_AnsHUMAN_

31-Jul-06 22:07

SteamEngine wrote:
delete a CStatic object

How did you create that CStatic object? (using new)
You can call DestroyWindow(),delete your pointer after this call.
delete myObj;

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

Re: deleting a CStatic object

Hamid_RT1-Aug-06 0:45

Hamid_RT

1-Aug-06 0:45

You want to delete a cstatic object but what is it (2)
how to create Cstatic?Whats application type?
Is hWnd from CStatic

WhiteSky

Re: memory management in visual c++

Don Box31-Jul-06 19:55

Don Box

31-Jul-06 19:55

I think, u should learn the basics of C++

Jubin Almighty
braindrain1@rediffmail.com
-----------------------------
Come online at:-
fitiyal@yahoo.com

Reading data to an Object Readfile.

sajiks31-Jul-06 19:01

sajiks

31-Jul-06 19:01

Is it possible to read the data from a file to an object using ReadFile?
please guide me how to do the same.
I tried the following way in VC++ but not getting the values to the object members, getting junk values only. Please help.

class configdata
{
public:

char arr[10];
int value;

void printdata()
{
CString aa;
aa.Format("%d",value);
AfxMessageBox(aa);
return;
}
};

void CTestDlg::OnButton1()
{
DWORD dwBytesRead, dwBytesWritten, dwPos;
char buff[4096];

configdata ss;
HANDLE hAppend;
hAppend = CreateFile("c:\\TWO.TXT", GENERIC_READ,
0,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL);

if (hAppend == INVALID_HANDLE_VALUE)
{
AfxMessageBox("Could not open TWO."); }
if (ReadFile(hAppend , &ss, 11, &dwBytesRead, NULL))
{

}
CString here;
here.Format("%d",ss.value);
AfxMessageBox(here);
buff[dwBytesRead] =0;
ss.printdata();
CloseHandle(hAppend);

}

How to disable an accelerator key.

Cool Ju31-Jul-06 18:59

Cool Ju

31-Jul-06 18:59

Hi,

How to disable(at run-time) an accelerator key assigned to a menu item in the accelerator table. Is there any direct API?

Thanks,
Cool Ju Cool | :cool:

Dream Ur Destiny

Web page using VC++

ragavan31-Jul-06 18:56

ragavan

31-Jul-06 18:56

Hi Does anyone know how to read a web page from VC++.

Thanks in advance

Re: Web page using VC++

_AnsHUMAN_ 31-Jul-06 19:02

_AnsHUMAN_

31-Jul-06 19:02

ragavan wrote:
read a web page from VC++

Open a connnection to the internet using CInternetSession.
Then
CInternetSession session("Test");
CStdioFile myFile=session.OpenURL("//Some URL HERE");
// Now read the contents of the file .

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

voice file over tcp

Kiran Pinjala31-Jul-06 18:49

Kiran Pinjala

31-Jul-06 18:49

Where can I find a way to send samll voice files through tcp and after recieving on ther other end they should be able to play the file.
How to do this.
Thank you.

KIRAN PINJARLA

C++/VC++ Bluetoth Stack

Shohab Abdullah31-Jul-06 18:35

Shohab Abdullah

31-Jul-06 18:35

I have a requirement to find that which bluetooth stack is
present(currently active) on the system(Windows XP) ? can anyone help me??

hai TOXCCT I found the reason

Kiran Pinjala31-Jul-06 18:32

Kiran Pinjala

31-Jul-06 18:32

My code was

<br />
USER * pUser = new USER;<br />
ZeroMemory(pUser, sizeof(USER));//** <big>THIS WAS THE REASON </big><br />
//-----<br />
//-----<br />
pUser->strName = name;<br />

Can please explain me why ZeroMemory(pUser,sizeof(USER)); was causing the error.
Thank you.

KIRAN PINJARLA

Re: hai TOXCCT I found the reason

Naveen31-Jul-06 18:55

Naveen

31-Jul-06 18:55

when u use the ZeroMemory() funtion, the m_pchData member in the CString becomes NULL.

but CString was unaware of this change. when trying to copy the new data( in the statement pUser->strName = name;) it causes error.

So dont use ZeroMemory for class/structure that have another class as member.

nave

Re: hai TOXCCT I found the reason

Kiran Pinjala31-Jul-06 19:10

Kiran Pinjala

31-Jul-06 19:10