[RESOLVED] cutout a circlular region

[litlewiki]

I'm trying to cutout a circular region out of a command button .this is what i have done::

Option Explicit
 
Private Declare Function CreateRectRgn Lib "gdi32" (ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long) As Long
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 CombineRgn Lib "gdi32" (ByVal hDestRgn As Long, ByVal hSrcRgn1 As Long, ByVal hSrcRgn2 As Long, ByVal nCombineMode As Long) As Long
Private Declare Function SetWindowRgn Lib "user32" (ByVal hWnd As Long, ByVal hRgn As Long, ByVal bRedraw As Long) As Long
Private Declare Function DeleteObject Lib "gdi32" (ByVal hObject As Long) As Long
 
Private m_FormRegion As Long
 
Private Sub CutRect(ByRef outer_rgn As Long)
Const RGN_DIFF = 1
Dim inner_rgn As Long
Dim combined_rgn As Long
 
    inner_rgn = CreateEllipticRgn(100 - 30, 50 - 0, 20, 10)
    combined_rgn = CreateRectRgn(Command1.Width, Command1.Height, Command1.Left - 10, Command1.Top - 10)
    CombineRgn combined_rgn, outer_rgn, inner_rgn, RGN_DIFF
    DeleteObject outer_rgn
    DeleteObject inner_rgn
    outer_rgn = combined_rgn
 
End Sub
 
Private Sub Form_Load()
Dim border_width As Single
Dim title_height As Single
    m_FormRegion = CreateRectRgn(Command1.Width, Command1.Height, Command1.Left - 10, Command1.Top - 10)
    border_width = (Command1.Left + Command1.Width)
    title_height = Command1.Top + Command1.Height
    CutRect m_FormRegion
    SetWindowRgn Command1.hWnd, m_FormRegion, True
End Sub
 
Private Sub Form_Unload(Cancel As Integer)
    If m_FormRegion <> 0 Then
        DeleteObject m_FormRegion
        m_FormRegion = 0
    End If
End Sub

It works if i place my command1 button at the top left corner of the form .but when i place it anywhere else,it doesnt work....

any idea why??

ps:this is the first time i'm coding api's and stuff...