API C Listbox

Hello

I want a person to be able to click something in a listbox and as soon as he does the text in an edit box changes accordingly.

All my controls are in the main window, I am using LB_SELCHANGE and
HWND hList = GetDlgItem(hwnd, IDC_LIST);
int count = SendMessage(hList, LB_GETCURSEL, 0, 0);

can anyone give me a small example program so I can see where I am going wrong.

From a search of this board for LBN_SELCHANGE:

http://www.cprogramming.com/cboard/s...t=LBNSELCHANGE

Or, you could try something like (untested):

Code:

case WM_COMMAND:
  {
  WORD  wNotify;      /* notification code */
  WORD  wID;          /* control id */
  HWND  hCntrl;       /* control handle */
  int   nSelected;    /* zero-based index of selected listbox item */
  int   nLen;         /* listbox item number of TCHARS (ie str length) */
  TCHAR *chBuffer;    /* for listbox item text */

  wID=LOWORD(wParam);
  wNotify=HIWORD(wParam);
  hCntrl=(HWND)lParam;

  if (hCntrl && wNotify==LBN_SELCHANGE && wID==IDC_LIST)
    {
    nSelected=SendMessage(hCntrl, LB_GETCURSEL, 0, 0);
    nLen=SendMessage(hCntrl, LB_GETTEXTLEN, nSelected, 0);
    chBuffer=(TCHAR*)malloc((nLen+1)*sizeof(TCHAR));
    if (chBuffer)
      {
      SendMessage(hCntrl, LB_GETTEXT, nSelected, (LPARAM)chBuffer);
      /* 'hEdit' is handle to edit control*/
      SetWindowText(hEdit,chBuffer);
      free(chBuffer);
      }
    }
  return 0;
  }

edit: editing