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);
/* . */
/* . */
}