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4/8/2010

This message notifies a tree view control's parent window that the selection has changed from one item to another. It is sent in the form of a WM_NOTIFYmessage.

Syntax 

TVN_SELCHANGED 
pnmtv = (NM_TREEVIEW FAR *) 
lParam

Parameters

pnmtv

Pointer to an NM_TREEVIEWstructure. The itemOldand itemNewmembers of the NM_TREEVIEWstructure are TVITEMstructures that contain information about the previously selected item and the newly selected item. Only the mask, hItem, state , and lParammembers of these structures are valid. The stateMaskmembers of the TVITEMstructures specified by itemOldand itemNeware undefined on input.

The actionmember of the NM_TREEVIEWstructure indicates the type of action that caused the selection to change. It is one of the following values.

Value Description

TVC_BYKEYBOARD

By a keystroke.

TVC_BYMOUSE

By a mouse click.

TVC_UNKNOWN

Unknown.

Return Value

The return value is ignored.

Requirements

Header commctrl.h
Windows Embedded CE Windows CE 1.0 and later
Windows Mobile Windows Mobile Version 5.0 and later

See Also