WM_ENTERIDLE message

Sent to the owner window of a modal dialog box or menu that is entering an idle state. A modal dialog box or menu enters an idle state when no messages are waiting in its queue after it has processed one or more previous messages.

#define WM_ENTERIDLE                    0x0121

Parameters

wParam

This parameter can be one of the following values.

Value Meaning
MSGF_DIALOGBOX
0
The system is idle because a dialog box is displayed.
MSGF_MENU
2
The system is idle because a menu is displayed.

lParam

A handle to the dialog box (if wParam is MSGF_DIALOGBOX) or window containing the displayed menu (if wParam is MSGF_MENU).

Return value

An application should return zero if it processes this message.

Remarks

You can suppress the WM_ENTERIDLE message for a dialog box by creating the dialog box with the DS_NOIDLEMSG style.

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

DefWindowProc

Conceptual

Dialog Boxes