Use a MouseDown or MouseUp event procedure to specify actions that will occur when a mouse button is pressed or released. Unlike the Click and DblClick events, MouseDown and MouseUp events lets you distinguish between the left, right, and middle mouse buttons. You can also write code for mouse-keyboard combinations that use the SHIFT, CTRL, and ALT keyboard modifiers. Use the NodeFromPoint property to determine the node from the cursor. The control fires the Select event when the user clicks a node ( selects a node ). Use the AnchorFromPoint property to retrieve the identifier of the anchor element from the cursor. The AnchorClick event notifies your application that the user clicks an anchor element. 

private void MouseDownEvent(object sender,short Button,short Shift,int X,int Y)
{
}

Private Sub MouseDownEvent(ByVal sender As System.Object,ByVal Button As Short,ByVal Shift As Short,ByVal X As Integer,ByVal Y As Integer) Handles MouseDownEvent
End Sub

private void MouseDownEvent(object sender, AxEXORGCHARTLib._IChartViewEvents_MouseDownEvent e)
{
}

void OnMouseDown(short Button,short Shift,long X,long Y)
{
}

void __fastcall MouseDown(TObject *Sender,short Button,short Shift,int X,int Y)
{
}

procedure MouseDown(ASender: TObject; Button : Smallint;Shift : Smallint;X : Integer;Y : Integer);
begin
end;

procedure MouseDownEvent(sender: System.Object; e: AxEXORGCHARTLib._IChartViewEvents_MouseDownEvent);
begin
end;

begin event MouseDown(integer Button,integer Shift,long X,long Y)
end event MouseDown

Private Sub MouseDownEvent(ByVal sender As System.Object, ByVal e As AxEXORGCHARTLib._IChartViewEvents_MouseDownEvent) Handles MouseDownEvent
End Sub

Private Sub MouseDown(Button As Integer,Shift As Integer,X As Single,Y As Single)
End Sub

Private Sub MouseDown(ByVal Button As Integer,ByVal Shift As Integer,ByVal X As Long,ByVal Y As Long)
End Sub

LPARAMETERS Button,Shift,X,Y

PROCEDURE OnMouseDown(oChartView,Button,Shift,X,Y)
RETURN

<SCRIPT EVENT="MouseDown(Button,Shift,X,Y)" LANGUAGE="JScript">
</SCRIPT>

<SCRIPT LANGUAGE="VBScript">
Function MouseDown(Button,Shift,X,Y)
End Function
</SCRIPT>

Procedure OnComMouseDown Short llButton Short llShift OLE_XPOS_PIXELS llX OLE_YPOS_PIXELS llY
	Forward Send OnComMouseDown llButton llShift llX llY
End_Procedure

METHOD OCX_MouseDown(Button,Shift,X,Y) CLASS MainDialog
RETURN NIL

void onEvent_MouseDown(int _Button,int _Shift,int _X,int _Y)
{
}

function MouseDown as v (Button as N,Shift as N,X as OLE::Exontrol.ChartView.1::OLE_XPOS_PIXELS,Y as OLE::Exontrol.ChartView.1::OLE_YPOS_PIXELS)
end function

function nativeObject_MouseDown(Button,Shift,X,Y)
return

The following VB sample determines the node being clicked:

Private Sub ChartView1_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
    With ChartView1
        Dim n As EXORGCHARTLibCtl.Node
        Set n = .NodeFromPoint(X / Screen.TwipsPerPixelX, Y / Screen.TwipsPerPixelY)
        If Not (n Is Nothing) Then
            MsgBox n.Caption
        End If
    End With
End Sub

The following C++ sample determines the node being clicked:

void OnMouseDownChartview1(short Button, short Shift, long X, long Y) 
{
	CNode node = m_chartview.GetNodeFromPoint( X, Y );
	if ( node.m_lpDispatch != NULL )
		MessageBox( node.GetCaption() );
}

The following VB.NET sample determines the node being clicked:

Private Sub AxChartView1_MouseDownEvent(ByVal sender As Object, ByVal e As AxEXORGCHARTLib._IChartViewEvents_MouseDownEvent) Handles AxChartView1.MouseDownEvent
    With AxChartView1
        Dim n As EXORGCHARTLib.Node = .get_NodeFromPoint(e.x, e.y)
        If Not (n Is Nothing) Then
            MsgBox(n.Caption)
        End If
    End With
End Sub

The following C# sample determines the node being clicked:

private void axChartView1_MouseDownEvent(object sender, AxEXORGCHARTLib._IChartViewEvents_MouseDownEvent e)
{
	EXORGCHARTLib.Node node = axChartView1.get_NodeFromPoint(e.x, e.y);
	if (node != null)
		MessageBox.Show(node.Caption);
}

The following VFP sample determines the node being clicked:

*** ActiveX Control Event ***
LPARAMETERS button, shift, x, y

With thisform.ChartView1
    local n
    n = .NodeFromPoint(x , y )
    If !isnull(n) Then
        wait window nowait n.Caption
    EndIf
EndWith