form1.frm

Visual Basic程序设计视频教程

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   3195
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4680
   LinkTopic       =   "Form1"
   Picture         =   "Form1.frx":0000
   ScaleHeight     =   3195
   ScaleWidth      =   4680
   StartUpPosition =   3  '窗口缺省
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
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

Private Sub Form_Load()
    Dim CER As Long
    CER = CreateEllipticRgn(10, 10, 200, 200)
    Call SetWindowRgn(Me.hWnd, CER, True)
End Sub