by Karthikeyan (187 Submissions)
Category: Windows API Call/Explanation
Compatability: Visual Basic 5.0
Difficulty: Unknown Difficulty
Originally Published: Tue 23rd January 2001
Date Added: Mon 8th February 2021
Rating: 
(1 Votes)
'Create a Rectangular Form using CreateRectRgn and SetWindowRgn API
API Declarations
Private Declare Function SetWindowRgn Lib "user32" (ByVal hWnd As Long, ByVal hRgn As Long, ByVal bRedraw As Boolean) As Long
Private Declare Function DeleteObject Lib "gdi32.dll" (ByVal hObject As Long) As Long
VBcoders
'http://www.geocities.com/marskarthik
'http://marskarthik.virtualave.net
'Email: [email protected]
Private Sub Command1_Click()
End
End Sub
Private Sub Form_Load()
Dim fwidth As Long, fheight As Long
Dim rval As Long, nhwnd As Long
fwidth = Me.Width / Screen.TwipsPerPixelX
fheight = Me.Height / Screen.TwipsPerPixelY
'Create Rectangular Region
nhwnd = CreateRectRgn(0, 0, fwidth / 2, fheight / 2)
'Set Rectangular Region on form
rval = SetWindowRgn(Me.hWnd, nhwnd, True)
rval = DeleteObject(nhwnd)
End Sub
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