C / C++ / MFC

how to log text from a edit box into file?

11-Nov-08 3:07

MsmVc wrote:
How can i export List Control data into...

Where it goes is irrelevant. You get at it by using GetItem() and GetItemText().

"Love people and use things, not love things and use people." - Unknown

"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch

puppya11-Nov-08 1:20

puppya

11-Nov-08 1:20

i could open the file and i could get text from edit box but when i am trying to write to file, it is not getting written to file.
m_pStream is showing as NULL.

_AnsHUMAN_ 11-Nov-08 1:24

_AnsHUMAN_

11-Nov-08 1:24

Can you post your code or expect someone to figure it out without seeing it?
Did you try and debug the code?

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

_AnShUmAn_

wielklem11-Nov-08 1:27

11-Nov-08 1:27

//***************************************************

#include <iostream>
#include <fstream>
using namespace std; // !!!!!

//***************************************************

// write to a file:


int main () 
{
  ofstream myfile;
  myfile.open ("example.txt");
  myfile << "Writing this to a file.\n";
  myfile.close();
  return 0;
}


//***************************************************

//read from file:

int main()
{
        string input;
        ifstream myfile("Config\\test.txt"); // crefull with the: \\ !!!!
        getline(myfile,input);
        Edit1->Text = input.c_str(); ///.c_str convert string
        getline(myfile,input);
        Edit2->Text = input.c_str();
        getline(myfile,input);
        Edit3->Text = input.c_str();
}

//***************************************************</fstream></iostream>

wkr,
Willem

David Crow11-Nov-08 3:09

11-Nov-08 3:09

wielklem wrote:
myfile.close();

At this point, can you open the file via Notepad and see its contents?

"Love people and use things, not love things and use people." - Unknown

"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch

wielklem11-Nov-08 3:19

11-Nov-08 3:19

correct, you can now view or edit it

David Crow11-Nov-08 3:22

11-Nov-08 3:22

Ok, now that we've narrowed it down to just the code that reads, why not share with us what is not working? When you stepped through the code using the debugger, what do you see? Do the variables contain the expected results?

"Love people and use things, not love things and use people." - Unknown

"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch

wielklem11-Nov-08 23:53

11-Nov-08 23:53

by the way, this code expects the file to exist. if your file (ia test.txt or myfile.whatever-extention) doesn't exist, it can't be read.
keep that in mind.

How to connect remote system in internet

CPallini11-Nov-08 1:41

CPallini

11-Nov-08 1:41

I see an unexpected behaviour in your description. Roll eyes | :rolleyes:

Kiran Pinjala11-Nov-08 1:01

Kiran Pinjala

11-Nov-08 1:01

I want to know how the TeamViewer can connect to a remote system which doesn't has a public ip. Can you tell me how its done?

Thank you

Saadhinchaali

Mark Salsbery11-Nov-08 6:08

Mark Salsbery

11-Nov-08 6:08

I don't know anything about TeamViewer, but....

Probably by using intermediate "relay" servers.

Any machine that has web access at least has outgoing TCP/IP
connectivity using the HTTP protocol.

If both ends can get to the web, they can connect to the relay server,
which will forward (or "relay") data on to the other end.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Kiran Pinjala11-Nov-08 22:28

Kiran Pinjala

11-Nov-08 22:28

TeamViewer is tool using which one computer can connectct to any other computer over internet which has TeamViewer installed in it.
When we install TeamViewer it genrates a userid and password, which can be used to connect our computer from any other TeamViewer installed computer on the internet.

I wonder how it does this?

Saadhinchaali

modified on Wednesday, November 12, 2008 4:55 AM

Mark Salsbery12-Nov-08 6:30

Mark Salsbery

12-Nov-08 6:30

Saadhinchaali wrote:
I wonder how it does this?

How does it do what? I already explained how the two ends
are able to connect.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Kiran Pinjala12-Nov-08 18:22

Kiran Pinjala

12-Nov-08 18:22

Hi Mark,
Thank you for your answer.
My doubt is when we generate a remote desktop connection request is generated from on system how the relay server knows, to which this connection request has to be sent?

Saadhinchaali

Creating new buttons (and let them do something)

Mark Salsbery12-Nov-08 20:28

Mark Salsbery

12-Nov-08 20:28

Some kind of connection has to be made at both ends.

It can be done peer-to-peer as well, but that can require network
settings. The old PCAnywhere did that.

I can only guess as I haven't used it, but I know it's not magic - there's
some kind of discovery going on... Smile | :)

Do you have a specific question about it? Internet connections pretty much all
work the same way - a listening "server" and an endpoint requesting a connection.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

wielklem11-Nov-08 0:58

Re: Creating new buttons (and let them do something)

11-Nov-08 0:58

hello,

it's kind of a newbie question, but i couldn't find it anyware so;

from an edit box i create a number if buttons, by pushing the "create" button.
that works without a problem.
now i want the button i just created to change colour or disapear when i click on it.
or i want an other button to disapear (ia with a textbox to filin witch one to disapear)
and that part just won work.
the number of buttons i want to create is unlimmited (1000 in this code).
what can i do?

#include &lt;vcl.h&gt;
#pragma hdrstop
using namespace std;
#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
  TButton   *Button[1000];
  int count;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------

void __fastcall TForm1::Button1Click(TObject *Sender)
{          // this is the create button
          Button[count] = new TButton(this);
          Button[count]-&gt;Parent=Form1;
          Button[count]-&gt;Visible=true;
          Button[count]-&gt;Top=(count*20)+10;
          Button[count]-&gt;Left=10;
          Button[count]-&gt;Caption= "Button "+IntToStr(count);
}

void __fastcall TForm1::Edit1Change(TObject *Sender)
{
count = StrToInt(Edit1-&gt;Text);    // this is the editbox
}

by the way, i'm using borland c++builder

wkr,
Willem

the final code wil be somthing like this:

// reading source file
// the int NumberOfSource is allready read by an other file reader


        ifstream SOSfile("config\\sos.cfg"); // opening file

  int ButtonCounter = 1 ;
while(NumberOfSource !=0)
{
        getline(SOSfile,input);
        SOButtonID = input.c_str(); //  Button ID
        getline(SOSfile,input);
        SOLEFT = StrToInt(input.c_str()); //  button left space
        getline(SOSfile,input);
        SOTOP = StrToInt(input.c_str()); //  Button TOP
        getline(SOSfile,input);
        SOImage = input.c_str(); // image for button
        getline(SOSfile,input);
        SOPAGE = StrToInt(input.c_str()); //  pagina voor de button
        getline(SOSfile,input);
        SOCaption = input.c_str(); //  Caption in button
        getline(SOSfile,input);
        SOSource = input.c_str(); //   source to switch
        getline(SOSfile,input);
        SOSpare = input.c_str(); //  spare
        getline(SOSfile,input);
        SOSpare = input.c_str(); //  spare
        getline(SOSfile,input);
        SOSpare = input.c_str(); //  spare

        // button properties begin:

          BitBtn[SOIDButton]=new TBitBtn(this);
          BitBtn[SOIDButton]-&gt;Name= SOButtonID.c_str();
          BitBtn[SOIDButton]-&gt;Visible=true;
          BitBtn[SOIDButton]-&gt;Height = 57;
          BitBtn[SOIDButton]-&gt;Width = 57;
          BitBtn[SOIDButton]-&gt;Top=SOTOP;
          BitBtn[SOIDButton]-&gt;Left= SOLEFT;
          BitBtn[SOIDButton]-&gt;Bitmap-&gt;LoadFromFile(SOImage.c_str());
          BitBtn[SOIDButton]-&gt;Caption = BitBtn[SOIDButton]-&gt;Name;  //SOCaption.c_str();
          if(ButtonCounter &lt;= 18){BitBtn[SOIDButton]-&gt;Parent = PanelSO1;}
          if(ButtonCounter &gt; 18 &amp;&amp; ButtonCounter &lt;= 36){BitBtn[SOIDButton]-&gt;Parent = PanelSO2;}
          if(ButtonCounter &gt; 36 &amp;&amp; ButtonCounter &lt;= 54){BitBtn[SOIDButton]-&gt;Parent = PanelSO3;}
          if(ButtonCounter &gt; 54 &amp;&amp; ButtonCounter &lt;= 64){BitBtn[SOIDButton]-&gt;Parent = PanelSO2;}


          // end button properties

         ButtonCounter = ButtonCounter + 1;
        NumberOfSource = NumberOfSource - 1;

}

// end reading source file

i just want these new created buttons to do something unique (read from the file)

David Crow11-Nov-08 3:11

Re: Creating new buttons (and let them do something)

11-Nov-08 3:11

wielklem wrote:
or i want an other button to disapear (ia with a textbox to filin witch one to disapear)
and that part just won work.

Are you calling ShowWindow(hButton, SW_HIDE)?

wielklem wrote:
i just want these new created buttons to do something unique (read from the file)

Do you have code in place to respond to a button click?

"Love people and use things, not love things and use people." - Unknown

"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch

wielklem11-Nov-08 3:31

Re: Creating new buttons (and let them do something)

11-Nov-08 3:31

<quote>
Are you calling ShowWindow(hButton, SW_HIDE)?

no, in cBuilder it's Button[idbutton]->visible = false; or colour = red ia
but the problem is the [idbutton] outside the creation void this id doesn't exist.
ia:
void blabla()
{
Button[test] = new TButton(this); \\ now i've got a button called Buttontest
}
void blabla2()
{
Buttontest->colour = red; // now it should change to red
}
instead of changing the colour to red the compiler shouts out "error, this Buttontest doesn't exist"
if i put the change colour into the creation void, than it doesn't change but becomes the defauld property of the button.

<quote>
Do you have code in place to respond to a button click?

that's the problem, i don't know how to do that [newbie]

David Crow11-Nov-08 4:34

Re: Creating new buttons (and let them do something)

11-Nov-08 4:34

wielklem wrote:
no, in cBuilder...

Keep in mind that this is a Microsoft-centric forum, hence the VC++/MFC at the top.

wielklem wrote:
that's the problem, i don't know how to do that [newbie]

And likely neither do we, unless you happen to find someone else that knows cBuilder.

"Love people and use things, not love things and use people." - Unknown

"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch

wielklem11-Nov-08 23:46