'bubble effect
'watt thierry

Private Declare Function CreateEllipticRgn Lib "gdi32" (ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long) As Long
Private Declare Function SetWindowRgn Lib "User32" (ByVal Hwnd As Long, ByVal hRgn As Long, ByVal bRedraw As Boolean) As Long

Sub Bubble(frm As Form)
   frm.Show
   Dim a As Integer
   Dim b As Integer
   Dim C As Integer
   Dim d As Integer
   Dim e As Integer
   Dim f As Integer
   Dim w As Integer
   Dim x As Integer
   Dim Y As Integer
   Dim z As Integer
   Dim current As Double
   Call frm.Move(0, 0)
   w = frm.Height: x = frm.Width: Y = frm.Top: z = frm.Left
   a = 0: b = 0: C = w: d = x: e = Y: f = z
   Do While a < frm.Height / 15 Or b < frm.Width / 15
      a = a + 25
      b = b + 25
      e = e + 70
      f = f + 70
      If a > frm.Height / 15 Then a = a - 24
      If b > frm.Width / 15 Then b = b - 24
      Call frm.Move(f, e, d, C)
      current = Timer
      Do While Timer - current < 0.01
         DoEvents
      Loop
      Call SetWindowRgn(frm.Hwnd, CreateEllipticRgn(0, 0, b, a), True)
   Loop
   current = Timer
   Do While Timer - current < 1
      DoEvents
   Loop
   Call SetWindowRgn(frm.Hwnd, CreateEllipticRgn(0, 0, 0, 0), True)
End Sub

Private Sub Form_Load()
Call Bubble(Form1)
End Sub