form7.frm

初学VB几个简单的练习程序 包括3位随机数翻转.字幕滚动等

VERSION 5.00
Begin VB.Form Form7 
   Caption         =   "B-2"
   ClientHeight    =   5415
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   6690
   LinkTopic       =   "Form7"
   ScaleHeight     =   5415
   ScaleWidth      =   6690
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command2 
      Caption         =   "计算圆周长"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   615
      Left            =   960
      TabIndex        =   5
      Top             =   3120
      Width           =   1815
   End
   Begin VB.CommandButton Command1 
      Caption         =   "计算圆面积"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   615
      Left            =   960
      TabIndex        =   4
      Top             =   1800
      Width           =   1935
   End
   Begin VB.TextBox Text1 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   735
      Left            =   3240
      TabIndex        =   1
      Top             =   600
      Width           =   2175
   End
   Begin VB.Label Label5 
      BorderStyle     =   1  'Fixed Single
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   735
      Left            =   3240
      TabIndex        =   3
      Top             =   3000
      Width           =   1935
   End
   Begin VB.Label Label4 
      BorderStyle     =   1  'Fixed Single
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   855
      Left            =   3240
      TabIndex        =   2
      Top             =   1680
      Width           =   1935
   End
   Begin VB.Label Label1 
      Alignment       =   2  'Center
      Caption         =   "请输入圆半径"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   14.25
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   495
      Left            =   960
      TabIndex        =   0
      Top             =   720
      Width           =   2055
   End
End
Attribute VB_Name = "Form7"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Const pi = 3.14
Dim r As Single
Dim s As Single
Dim c As Single

Private Sub Command1_Click()
r = Val(Text1.Text)
s = pi * r * r
Label4.Caption = Str(s)

End Sub

Private Sub Label2_Click()

End Sub

Private Sub Command2_Click()
r = Val(Text1.Text)
c = pi * r * 2
Label5.Caption = Str(c)
End Sub