hdm-setitem.md

title	description	ms.assetid	keywords	topic_type	api_name	api_location	api_type	ms.topic	ms.date
HDM_SETITEM message (Commctrl.h)	Sets the attributes of the specified item in a header control. You can send this message explicitly or use the Header\_SetItem macro.	c8f0d526-3ebe-48c5-8aea-ea3703e2d983	HDM_SETITEM message Windows Controls	apiref	HDM_SETITEM HDM_SETITEMA HDM_SETITEMW	Commctrl.h	HeaderDef	reference	05/31/2018

HDM_SETITEM message

Sets the attributes of the specified item in a header control. You can send this message explicitly or use the Header_SetItem macro.

Parameters

wParam

The current index of the item whose attributes are to be changed.

lParam

A pointer to an HDITEM structure that contains item information. When this message is sent, the mask member of the structure must be set to indicate which attributes are being set.

Return value

Returns nonzero upon success, or zero otherwise.

Remarks

The HDITEM structure that supports this message supports item order and image list information. By using these members, you can control the order in which items are displayed and specify images to appear with items.

Requirements

Requirement	Value
Minimum supported client	Windows Vista [desktop apps only]
Minimum supported server	Windows Server 2003 [desktop apps only]
Header	Commctrl.h
Unicode and ANSI names	HDM_SETITEMW (Unicode) and HDM_SETITEMA (ANSI)