WinQueryDlgItemTextLength

This function queries the length of the text string in a dialog item, not including any null termination character.

Syntax

WinQueryDlgItemTextLength(hwndDlg, idItem)

Parameters

hwndDlg (HWND) - input

Parent-window handle.

idItem (ULONG) - input

Identity of the child window whose text is to be queried.

It must be greater or equal to 0 and less or equal to 0xFFFF.

Returns

lRetLen (LONG) - returns

Length of text.

Error occurred

Other

Length of text.

Remarks

This function is valid for any window with children. However, it is typically used for dialog items in a dialog window.

Example Code

This example is the beginning of a function which processes the text which is displayed in the message text line.

#define INCL_WINDIALOGS
#define INCL_DOSMEMMGR
#include <os2.h>
#define DID_MSGEDIT 900

void SelectMessageFromText(hwndDlg)
HWND    hwndDlg;
{
  char *szTemp;
  LONG  length;
 
 /* First get the edit text from the string */
 
  length = WinQueryDlgItemTextLength(hwndDlg, DID_MSGEDIT);

 /* now we know the buffer size needed. */
 
   DosAllocMem((PPVOID)szTemp,
               (ULONG)length,
               PAG_READ |
               PAG_WRITE |
               PAG_COMMIT);
 
   WinQueryDlgItemText(hwndDlg,
                       DID_MSGEDIT,
                       sizeof(szTemp),
                       (PSZ)szTemp);
      /* . */
      /* . */
}

Related Functions

• WinQueryDlgItemShort
• WinQueryDlgItemText
• WinQueryWindowText
• WinQueryWindowTextLength
• WinSetDlgItemShort
• WinSetDlgItemText
• WinSetWindowText