DM_GETDEFID message

Retrieves the identifier of the default push button control for a dialog box.

#define WM_USER              0x0400
#define DM_GETDEFID         (WM_USER+0)

Parameters

wParam

This parameter is not used and must be zero.

lParam

This parameter is not used and must be zero.

Return value

If a default push button exists, the high-order word of the return value contains the value DC_HASDEFID and the low-order word contains the control identifier. Otherwise, the return value is zero.

Remarks

The DefDlgProc function processes this message.

Requirements

Minimum supported client
Windows 2000 Professional [desktop apps only]
Minimum supported server
Windows 2000 Server [desktop apps only]
Header
Winuser.h (include Windows.h)

See also

Reference

DefDlgProc

DM_SETDEFID

Conceptual

Dialog Boxes