C#

private void txtBoxLeave(object sender, System.EventArgs e) {
    // You say that it only works if thge text is altered, so lets alter the text :P
    // Again, i don't know if this works...
    textbox.Text = textbox.Text + " "
    textbox.Text = textbox.Text.SubString(0, textbox.Text.Length - 1)

    textbox.SelectionStart = 0;
}

if(e.Button == MouseButtons.Left) {<br />
    Point coordinate = PointToScreen(new Point(e.X,e.Y));<br />
<br />
    //... Other stuff to move the object around<br />
}

Form f = (Form)m_InitializedForms[Form2];
f.Show();

public class FormLoader
{
	private static HybridDictionary m_InitializedForms = new HybridDictionary();

	public static void LoadFormType(Type formType, Form parentForm)
	{
		lock( typeof( FormLoader ) )
		{
			if( eh == null )
			{
				eh = new EventHandler( FormClosed );
			}
		}

		if( IsAlreadyLoaded( formType ) )
		{
			Form f = GetForm( formType );
			f.Focus();
			f.BringToFront();
			return;
		}

		Form frm = (Form)Activator.CreateInstance(formType);
		FlagAsLoaded( formType, frm );
		frm.Closed += eh;
		frm.Show();
	}

	private static void FlagAsLoaded( Type formType, Form f )
	{
		m_InitializedForms[formType.Name] = f;
	}

	private static void FlagAsNotLoaded( Type formType )
	{
		m_InitializedForms.Remove( formType );
	}

	private static bool IsAlreadyLoaded( Type formType )
	{
		return ( ( m_InitializedForms[ formType.Name ] as Form ) != null );
	}

	private static Form GetForm( Type formType )
	{
		return ( m_InitializedForms[ formType.Name ] as Form );
	}

	private static void FormClosed( object sender, EventArgs e )
	{
		Form closingForm = sender as Form;
		if( closingForm != null )
		{
			closingForm.Closed -= eh;
			FlagAsNotLoaded( sender.GetType() );
		}
	}

	private static EventHandler eh;
}

m_InitializedForms.Remove( formType.Name );

private void AllTextBoxes_MouseEnter(object sender, MouseEventArgs e)
{
   TextBox tb = sender as textBox;
   if(tb != null)
   {
       // A textbox raised this event
   }
}