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 ItemFromPoint property to get the item over cursor. Use the GroupFromPoint property to get the group over cursor. 

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

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

private void MouseUpEvent(object sender, AxEXPLORERBARLib._IExplorerBarEvents_MouseUpEvent e)
{
}

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

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

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

procedure MouseUpEvent(sender: System.Object; e: AxEXPLORERBARLib._IExplorerBarEvents_MouseUpEvent);
begin
end;

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

Private Sub MouseUpEvent(ByVal sender As System.Object, ByVal e As AxEXPLORERBARLib._IExplorerBarEvents_MouseUpEvent) Handles MouseUpEvent
End Sub

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

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

LPARAMETERS Button,Shift,X,Y

PROCEDURE OnMouseUp(oExplorerBar,Button,Shift,X,Y)
RETURN

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

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

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

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

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

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

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

The following VB sample displays the caption of the group being clicked:

Private Sub ExplorerBar1_MouseUp(Button As Integer, Shift As Integer, X As Single, Y As Single)
    With ExplorerBar1
        Dim g As Group
        Set g = .GroupFromPoint(X / Screen.TwipsPerPixelX, Y / Screen.TwipsPerPixelY)
        If Not g Is Nothing Then
            MsgBox g.Caption
        End If
    End With
End Sub

The following VB sample displays the caption of the item being clicked:

Private Sub ExplorerBar1_MouseUp(Button As Integer, Shift As Integer, X As Single, Y As Single)
    With ExplorerBar1
        Dim i As Item
        Set i = .ItemFromPoint(X / Screen.TwipsPerPixelX, Y / Screen.TwipsPerPixelY)
        If Not i Is Nothing Then
            MsgBox i.Caption
        End If
    End With
End Sub

The following C++ sample displays the caption of the group being clicked:

void OnMouseUpExplorerbar1(short Button, short Shift, long X, long Y) 
{
	CGroup group = m_explorerbar.GetGroupFromPoint( X, Y );
	if ( group.m_lpDispatch != NULL )
		MessageBox( group.GetCaption() );
}

The following C++ sample displays the caption of the item being clicked:

void OnMouseUpExplorerbar1(short Button, short Shift, long X, long Y) 
{
	CItem item = m_explorerbar.GetItemFromPoint( X, Y );
	if ( item.m_lpDispatch != NULL )
		MessageBox( item.GetCaption() );
}

The following VB.NET sample displays the caption of the group being clicked:

Private Sub AxExplorerBar1_MouseUpEvent(ByVal sender As Object, ByVal e As AxEXPLORERBARLib._IExplorerBarEvents_MouseUpEvent) Handles AxExplorerBar1.MouseDownEvent
    With AxExplorerBar1
        Dim g As EXPLORERBARLib.Group = .get_GroupFromPoint(e.x, e.y)
        If Not g Is Nothing Then
            MsgBox(g.Caption)
        End If
    End With
End Sub

The following VB.NET sample displays the caption of the item being clicked:

Private Sub AxExplorerBar1_MouseUpEvent(ByVal sender As Object, ByVal e As AxEXPLORERBARLib._IExplorerBarEvents_MouseUpEvent) Handles AxExplorerBar1.MouseDownEvent
    With AxExplorerBar1
        Dim i As EXPLORERBARLib.Item = .get_ItemFromPoint(e.x, e.y)
        If Not i Is Nothing Then
            MsgBox(i.Caption)
        End If
    End With
End Sub

The following C# sample displays the caption of the group being clicked:

private void axExplorerBar1_MouseUpEvent(object sender, AxEXPLORERBARLib._IExplorerBarEvents_MouseUpEvent e)
{
	EXPLORERBARLib.Group g = axExplorerBar1.get_GroupFromPoint(e.x, e.y);
	if (g != null)
		MessageBox.Show(g.Caption);
}

The following C# sample displays the caption of the item being clicked:

private void axExplorerBar1_MouseUpEvent(object sender, AxEXPLORERBARLib._IExplorerBarEvents_MouseUpEvent e)
{
	EXPLORERBARLib.Item i = axExplorerBar1.get_ItemFromPoint(e.x, e.y);
	if (i != null)
		MessageBox.Show(i.Caption);
}

The following VFP sample displays the caption of the group being clicked:

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

With thisform.ExplorerBar1
    local g
    g = .GroupFromPoint(x , y)
    If !isnull(g)
		with g
	        wait window nowait .Caption
       endwith
    EndIf
EndWith

The following VFP sample displays the caption of the item being clicked:

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

With thisform.ExplorerBar1
    local i
    i = .ItemFromPoint(x , y)
    If !isnull(i)
		with i
	        wait window nowait .Caption
       endwith
    EndIf
EndWith