API Text box prob

how do i use the function:

Code:

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int GetDlgItemText( int nID, LPTSTR lpStr, int nMaxCount ) const;

int GetDlgItemText( int nID, CString& rString ) const;

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I need it to read from a Text box and then change it to a variable so i can use it else where when i call it back. ( i play a game so when they enter the account name it takes it has a variable then i have it add the variable to the "Account Name" box on the game itself ) I use Borland's C++ Builder so...Any help is appreciated.

Looks like you pass the controls ID as the first argument, and the destination variable in the second.

The one that has 3 variables is overloaded so you can determine the number of characters to read.

(Im just guessing here. Google it and it will probably bring up many links)

To put it into a control use SetDlgItemText

[EDIT]
Just for future posts.
There is a Windows programming forum on this board.
Questions related to the WinAPI will have a much better chance of being answered there :)

Here's an example (assuming you already created an edit control):

Code:

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char* text;

//get length of text in edit
int len = GetWindowTextLength(GetDlgItem(hwnd, IDC_MAIN_TEXT));
text = new char[++len]; //allocate space for text
//(length doesn't include space for null character)

//store the text into the text variable
GetDlgItemText(hwnd, IDC_MAIN_TEXT, text, len);

//display it in a message box
MessageBox(hwnd, text, "The current text is:",MB_OK);

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Doesnt even work...Im using Borlands C++ and the controls name is Edit3

[C++ Error] Unit1.cpp(22): E2451 Undefined symbol 'hwnd'
[C++ Error] Unit1.cpp(22): E2451 Undefined symbol 'IDC_MAIN_TEXT'
are the errors

How about posting your code? It would be easier to show you how to fit the code into your program

Code:

---

//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button2Click(TObject *Sender)
{

}
//---------------------------------------------------------------------------

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I want it to check it once they click the Button (Button2) and check the Edit3 Box

>>Doesnt even work...Im using Borlands C++ and the controls name is Edit3
xD Dude, it wasn't supposed to work. He didn't know anything about your program, what anything was called, what was declared and what wasn't... he gave you a template to follow, and you were supposed to fill in the placeholders with the actual names of things (for example IDC_MAIN_TEXT)!

In fact, it doesn't look like the code will even work at all with the code you have... you're using some weird wrapper classes that Borland provides or something, which as far as I know is very different from 'pure' Windows API code.

Quote:

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[C++ Error] Unit1.cpp(22): E2451 Undefined symbol 'hwnd'
[C++ Error] Unit1.cpp(22): E2451 Undefined symbol 'IDC_MAIN_TEXT'
are the errors

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hwnd is the handle to your dialog's window. IDC_MAIN_TEXT is the name of your Edit box (check your resource editor to see what its name is).