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4/8/2010

This macro maps the index of an item to a unique identifier (ID). You can use this macro or send the LVM_MAPINDEXTOIDmessage explicitly.

Syntax 

UINT ListView_MapIndexToID(
   HWND 
hwnd,
   UINT 
index
);

Parameters

hwnd

Handle to the list-view control.

index

UINT that contains the index of an item.

Return Value

Returns a unique ID.

Remarks

List-view controls internally track items by index. This can present problems because indexes can change during the control's existence.

You can use this macro to tag an item with an ID when you create the item. You use this ID to guarantee uniqueness during the existence of the list-view control.

Note:
In a multithreaded environment, you can only be sure the correct index is returned on the thread that hosts the list-view control, not on background threads.

Requirements

Header commctrl.h
Windows Embedded CE Windows CE 5.0 and later
Windows Mobile Windows Mobile Version 5.0 and later

See Also