KeyDownHandler - делегат

public delegate void KeyDownHandler(
	[NotNullAttribute] TreeGridViewItem item,
	[NotNullAttribute] Object data,
	[NotNullAttribute] KeyEventArgs e
)

Public Delegate Sub KeyDownHandler ( 
	<NotNullAttribute> item As TreeGridViewItem,
	<NotNullAttribute> data As Object,
	<NotNullAttribute> e As KeyEventArgs
)

public delegate void KeyDownHandler(
	[NotNullAttribute] TreeGridViewItem^ item, 
	[NotNullAttribute] Object^ data, 
	[NotNullAttribute] KeyEventArgs^ e
)

type KeyDownHandler = 
    delegate of 
        [<NotNullAttribute>] item : TreeGridViewItem * 
        [<NotNullAttribute>] data : Object * 
        [<NotNullAttribute>] e : KeyEventArgs -> unit