Weird Stuff - Backward form

[Andrew G]

I was playing around with APIs today, and i stumbed upon code to switch the form backward so the close buttons is on the left no the right. Also i managed to create a see through form that doesn't recieve any input, so you click on the form and it will select what is behind the form.

So i was wondering if there are any other wierd stuff like this out there.
1. backward form

Private Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long) As Long
Private Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
Const GWL_EXSTYLE = (-20)
Const WS_EX_LAYERED = &H80000
 
Private Sub Form_Load()
Dim ret As Long
ret = GetWindowLong(Me.hwnd, GWL_EXSTYLE)
ret = ret Or -WS_EX_LAYERED
SetWindowLong Me.hwnd, GWL_EXSTYLE, ret
End Sub

2. see through unselectable form

Const LWA_COLORKEY = &H1
Const LWA_ALPHA = &H2
Const GWL_EXSTYLE = (-20)
Const WS_EX_LAYERED = &H80000
Private Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" (ByVal hWnd As Long, ByVal nIndex As Long) As Long
Private Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hWnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
Private Declare Function SetLayeredWindowAttributes Lib "user32" (ByVal hWnd As Long, ByVal crKey As Long, ByVal bAlpha As Byte, ByVal dwFlags As Long) As Long
Private Sub changeWindow()
    Dim ret As Long
    ret = GetWindowLong(Me.hWnd, GWL_EXSTYLE)
    ret = ret Or WS_EX_LAYERED
    SetWindowLong Me.hWnd, GWL_EXSTYLE, ret
    SetLayeredWindowAttributes Me.hWnd, 0, 128, LWA_ALPHA
    
    ret = ret Or Not WS_EX_LAYERED
    SetWindowLong Me.hWnd, GWL_EXSTYLE, ret
End Sub
 
Private Sub Form_Load()
changeWindow
End Sub