Win32 - How to get input from specific windows class? - c++

Question

I am using this windows class as an input box for my choose player name window http://www.codeproject.com/Articles/13330/Using-Dialog-Templates-to-create-an-InputBox-in-C --I read the entire description provided with the codeproject submission but none of it describes how I can actually output the input from the box. Can anyone tell me how I can do this? For example, user inputs name 'bob'. Message box appears says "hey user your name is " ...
GetWindowText(GetDlgItem(..., ...), storage_var, 16);
How can I fill in these parameters assuming that is how you would get input using this windows class? What values would I put in there, how would this work? All help is appreciated, thanks!
EDIT
This is how I am calling it:
char buf[256] = " ";
WIN32INPUTBOX_PARAM param;
param.szTitle = "[RESOURCE] PING!";
param.szPrompt = "PONG!";
param.szResult = buf;
param.nResultSize = MAX_PATH;
param.DlgTemplateName = MAKEINTRESOURCE(101);
CWin32InputBox::InputBoxEx(&param);
CWin32InputBox::InputBox("Testing", "enter detail"
, buf, 256, true);
Following that how would i get input into a variable from that input box?

Answer 1

As #RetiredNinja mentioned in his comment, you need to use the parameter, like
char buf[100] = "";
CWin32InputBox::InputBox("hello", "what?", buf, 100, false);
MessageBox(hDlg, buf, "You entered this", MB_OK);
EDIT
The code above is for a "straight" Win-API without MFC.
If you are using MFC, (please edit the question and add the mfc tag), the code would look like:
char buf[100] = "";
CWin32InputBox::InputBox("hello", "what?", buf, 100, false);
MessageBox(buf, "You entered this", MB_OK);