C / C++ / MFC

Richard MacCutchan16-Dec-09 0:39

Richard MacCutchan

16-Dec-09 0:39

Paulraj G wrote:
How can i call..

Create an instance of the CDbModReactor class and call the function as required. This is basic C++, and if you do not understand how to do it you may need to go back to your learning materials.

Paulraj G16-Dec-09 1:00

Paulraj G

16-Dec-09 1:00

Hi...

Thanks for your reply.

This is the basic thing that i know.

but i don't have variable to pass from here.

if i call the function like

CDbModReactor cdbmod;
cdbmod.objectModified();

that shows error. also i have tried like

CDbModReactor cdbmod;
cdbmod.objectModified(pDb, pDbObj);

i don't have variables. that is the problem.
with out variables how can i call the function?

G.Paulraj

WoutL16-Dec-09 1:18

WoutL

16-Dec-09 1:18

You cannot call the function without variables.

Wout Louwers

Paulraj G16-Dec-09 1:20

Paulraj G

16-Dec-09 1:20

ok...

G.Paulraj

Richard MacCutchan16-Dec-09 1:18

Richard MacCutchan

16-Dec-09 1:18

Like I said before, I think you need to go back to learning the basics of classes and objects. Your call to cdbmod.objectModified() needs to pass the parameters required by that method.

Choosing of STL container

Nelek16-Dec-09 5:35

Nelek

16-Dec-09 5:35

In your own code...

gpDlg->OnCopy2Excell("modified", pDbObj);

That seems to me as a external call from your class "CDBModReactor" to the class pointed by "gpDlg" containing the function "OnCopy2Excell", so... if this is like that... you have answered your question by yourself. (Supposing you have written the code)

Regards.
--------
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hrishiS15-Dec-09 23:35

hrishiS

15-Dec-09 23:35

Hi to All,

Could anyone please help me choosing the best STL container to Hold a table (DB table)...

Thanks in advance,

-----------------------------
I am a beginner

Adam Roderick J16-Dec-09 0:05

16-Dec-09 0:05

That depends on your need
well my suggestions are:-
I think stl map [^] will be very well suited, if you have a lot searching operations.
Since it is DB table, i think it may be need to have a lot of searching.

But if you have add a lot element and no need for searching then list will be better [^].

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hrishiS16-Dec-09 0:52

hrishiS

16-Dec-09 0:52

thanks,

Now, after reading from database I need to put the data of a small table in a file system...please provide some hints to do that...

-----------------------------
I am a beginner

Jonathan Davies16-Dec-09 0:06

Jonathan Davies

16-Dec-09 0:06

I'm sure it's not the answer you wanted, but It depends upon your data. It also depends upon how you want to use that data. Start by having a look at something that describes the STL Container types and see if it gives any clues. Is there a reason why you want to put the data in a container?

hrishiS16-Dec-09 0:52

hrishiS

16-Dec-09 0:52

I got my answer, depending on the need i guess i will go for map

thanks,

Now, after reading from database I need to put the data of a small table in a file system...please provide some hints to do that...

-----------------------------
I am a beginner

CPallini16-Dec-09 0:08

CPallini

16-Dec-09 0:08

It really depends on how you want to access table items.
Yuo may, for instance use a vector of struct, where each struct contains one row.
Smile | :)

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[My articles]

Re: Threads and Sockets [modified]

KingsGambit16-Dec-09 1:00

KingsGambit

16-Dec-09 1:00

Often you will have to combine multiple containers as per your requirements. For example to create a 2D array you can use a vector or vectors

vector< vector<int> > a;

Threads and Sockets

giancoitaly15-Dec-09 21:56

giancoitaly

15-Dec-09 21:56

Hi all,
I have a problem with sockets inside a thread: it seems the socket object is not working inside the thread.

I'm using a Socket library found on the net and the "socket.h" library from windows.

This code works:

<br />
SocketClient s(ServerAdress, ServerPort);<br />
s.SendLine("aaa");<br />
while (1) <br />
{<br />
  string l = s.ReceiveLine();<br />
  if (l.empty()) break;<br />
  cout << l;<br />
   cout.flush();<br />
}<br />

Now I'm trying to do the same thing in a thread... I have a function:

<br />
void Answer(void* param) <br />
{  <br />
  SocketClient* ps = (SocketClient*)param;<br />
  ps->SendLine("GET / HTTP/1.0");<br />
  ps->SendLine("Host: www.google.com");<br />
  ps->SendLine("");<br />
<br />
  while (1) <br />
  {<br />
    string l = ps->ReceiveLine();<br />
    if (l.empty()) break;<br />
    cout << l;<br />
    cout.flush();<br />
  }<br />
  delete ps;<br />
} <br />

And I call it in this way:

<br />
_beginthread(Answer, 0, &s);<br />

All is compiling fine, but then the Socket inside the thread seems to be useless, it doesn't do nothing.

Can anyone explain me how to pass object between threads?

Is there a possibility to pass them without pointers?

I'm quite new in C++ and I found nothing on the net so far.

Thanks!
gianca

Adam Roderick J15-Dec-09 23:31

Is it possible to change the dll versions

15-Dec-09 23:31

why you think that, thread is useless?

You can pass a object as static object instead of pointer, but remember that it can modified from any thread.
Just refer this article [^]

It is correct to send object as pointer to a thread, but always check carefully on delete. Ensure that it should be deleted only after exit of thread.

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modified on Wednesday, December 16, 2009 6:23 AM

pandit8415-Dec-09 21:30

pandit84

15-Dec-09 21:30

Is is possible to changed the dll version according to our need.
Currently we get dll version as
<releaseversion> . <majorversion> . <minorversion> . <buildversion>
e.g. 7.1.0.256

Can we change it for our convinience. ?? Let say I want to append some text after version is it possible..??

Re: Is it possible to change the dll versions

KingsGambit15-Dec-09 21:56

KingsGambit

15-Dec-09 21:56

You can modify the version by editing the Version section in your DLL project's resource file.

Re: Is it possible to change the dll versions

pandit8415-Dec-09 22:14

pandit84

15-Dec-09 22:14

Thanks

How to implement edit box and spin control

deadlyabbas15-Dec-09 19:46

deadlyabbas

15-Dec-09 19:46

Hi,
I am creating a dialog in which I have to use the Spin control.Firstly I am code for the very first time in MFC.
I have created the dialog and drag dropped the controls on it.
I have taken the Edit control and on its right side I have placed the Spin control.
Please tell me that how I will attach the two controls and what are the property setting to be done in both the control.
Thanks

Adam Roderick J15-Dec-09 19:56

15-Dec-09 19:56

Dear friend, i think it will better if you try a hand with the book "Programming Windows with MFC(Jeff prosise)" [^].

The properties you need depends on your requirement, by default some properties are set.

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deadlyabbas15-Dec-09 20:29

deadlyabbas

15-Dec-09 20:29

Thanks Adam for your reply
Regarding properties I want to is that "Can we do it by setting the property or we have to do it by programming."

Adam Roderick J16-Dec-09 0:01

16-Dec-09 0:01

It depends on your need, if you want to set at run time then surely depend on APIs.
else you can set some properties are default.

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