bn-clicked.md

title	description	ms.assetid	keywords	topic_type	api_name	api_location	api_type	ms.topic	ms.date
BN_CLICKED notification code (Winuser.h)	Sent when the user clicks a button. The parent window of the button receives this notification code through the WM\_COMMAND message.	74847549-b92f-4981-a979-d0b2a8a5539a	BN_CLICKED notification code Windows Controls	apiref	BN_CLICKED	Winuser.h	HeaderDef	reference	05/31/2018

BN_CLICKED notification code

Sent when the user clicks a button.

The parent window of the button receives this notification code through the WM_COMMAND message.

BN_CLICKED

    WPARAM wParam;
    LPARAM lParam;

Parameters

wParam

The LOWORD contains the button's control identifier. The HIWORD specifies the notification code.

lParam

A handle to the button.

Remarks

A disabled button does not send a BN_CLICKED notification code to its parent window.

Requirements

Requirement	Value
Minimum supported client	Windows Vista [desktop apps only]
Minimum supported server	Windows Server 2003 [desktop apps only]
Header	Winuser.h (include Windows.h)

See also

Other Resources

HIWORD

LOWORD

WM_COMMAND