Use the AddItem event to notify your application that a new item has been inserted into the Items collection. The AddItem, InsertItem and InsertControlItem methods fire the AddItem event. The PutItems method invokes the AddItem event each time a new item is added. If the user binds the control to an ADO recordset using the  DataSource property, AddEvent is called each time the control inserts a new item. 

private void AddItem(object sender,int Item)
{
}

Private Sub AddItem(ByVal sender As System.Object,ByVal Item As Integer) Handles AddItem
End Sub

private void AddItem(object sender, AxEXGRIDLib._IGridEvents_AddItemEvent e)
{
}

void OnAddItem(long Item)
{
}

void __fastcall AddItem(TObject *Sender,Exgridlib_tlb::HITEM Item)
{
}

procedure AddItem(ASender: TObject; Item : HITEM);
begin
end;

procedure AddItem(sender: System.Object; e: AxEXGRIDLib._IGridEvents_AddItemEvent);
begin
end;

begin event AddItem(long Item)
end event AddItem

Private Sub AddItem(ByVal sender As System.Object, ByVal e As AxEXGRIDLib._IGridEvents_AddItemEvent) Handles AddItem
End Sub

Private Sub AddItem(ByVal Item As EXGRIDLibCtl.HITEM)
End Sub

Private Sub AddItem(ByVal Item As Long)
End Sub

LPARAMETERS Item

PROCEDURE OnAddItem(oGrid,Item)
RETURN

<SCRIPT EVENT="AddItem(Item)" LANGUAGE="JScript">
</SCRIPT>

<SCRIPT LANGUAGE="VBScript">
Function AddItem(Item)
End Function
</SCRIPT>

Procedure OnComAddItem HITEM llItem
	Forward Send OnComAddItem llItem
End_Procedure

METHOD OCX_AddItem(Item) CLASS MainDialog
RETURN NIL

void onEvent_AddItem(int _Item)
{
}

function AddItem as v (Item as OLE::Exontrol.Grid.1::HITEM)
end function

function nativeObject_AddItem(Item)
return

The following VB sample changes the item's background color:

Private Sub Grid1_AddItem(ByVal Item As EXGRIDLibCtl.HITEM)
    With Grid1.Items
        .ItemBackColor(Item) = IIf(.ItemToIndex(Item) Mod 2 = 0, vbBlue, vbRed)
    End With
End Sub

The following VB sample adds WS_HSCROLL and WS_VSCROLL window styles to the container window that hosts an ActiveX control

Private Const WS_VSCROLL = &H200000
Private Const WS_HSCROLL = &H100000

...

With Grid1.Items
    .InsertControlItem , "https://www.exontrol.com"
End With

...

Private Sub Grid1_AddItem(ByVal Item As EXGRIDLibCtl.HITEM)
With Grid1.Items
    If (.ItemControlID(Item) Like "http://www.*") Then
        ' Some of controls like the WEB control, require some additional window styles ( like WS_HSCROLL and WS_VSCROLL window styles )
        ' for the window that hosts that WEB control, to allow scrolling the web page
        .ItemWindowHostCreateStyle(Item) = .ItemWindowHostCreateStyle(Item) + WS_HSCROLL + WS_VSCROLL
    End If
    End With
End Sub

The following C++ sample changes the item's foreground color when a new items is inserted:

#include "Items.h"
void OnAddItemGrid1(long Item) 
{
	if ( ::IsWindow( m_grid.m_hWnd ) )
	{
		CItems items = m_grid.GetItems();
		items.SetItemForeColor( Item, RGB(0,0,255) );
	}
}

The following VB.NET sample changes the item's foreground color when a new items is inserted:

Shared Function ToUInt32(ByVal c As Color) As UInt32
    Dim i As Long
    i = c.R
    i = i + 256 * c.G
    i = i + 256 * 256 * c.B
    ToUInt32 = Convert.ToUInt32(i)
End Function

Private Sub AxGrid1_AddItem(ByVal sender As Object, ByVal e As AxEXGRIDLib._IGridEvents_AddItemEvent) Handles AxGrid1.AddItem
    AxGrid1.Items.ItemForeColor(e.item) = ToUInt32(Color.Blue)
End Sub

The following C# sample changes the item's foreground color when a new items is inserted:

private UInt32 ToUInt32(Color c)
{
	long i;
	i = c.R;
	i = i + 256 * c.G;
	i = i + 256 * 256 * c.B;
	return Convert.ToUInt32(i);
}

private void axGrid1_AddItem(object sender, AxEXGRIDLib._IGridEvents_AddItemEvent e)
{
	axGrid1.Items.set_ItemForeColor(e.item, ToUInt32(Color.Blue));
}

The following VFP sample changes the item's foreground color when a new items is inserted:

*** ActiveX Control Event ***
LPARAMETERS item

with thisform.Grid1.Items
	.DefaultItem = item
	.ItemForeColor( 0 ) = RGB(0,0,255 )
endwith