022.frm

VB初级练习源码适合刚学习VB的人练习。。。。

VERSION 5.00
Begin VB.Form Form1 
   BackColor       =   &H00404080&
   Caption         =   "Form1"
   ClientHeight    =   3090
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   4680
   LinkTopic       =   "Form1"
   ScaleHeight     =   3090
   ScaleWidth      =   4680
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command1 
      Caption         =   "计算"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   36
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   2295
      Left            =   120
      TabIndex        =   7
      Top             =   720
      Width           =   975
   End
   Begin VB.TextBox Text3 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   26.25
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00FF0000&
      Height          =   735
      Left            =   2880
      TabIndex        =   6
      Top             =   2400
      Width           =   1695
   End
   Begin VB.TextBox Text2 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   26.25
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00FF0000&
      Height          =   735
      Left            =   2880
      TabIndex        =   5
      Top             =   1560
      Width           =   1695
   End
   Begin VB.TextBox Text1 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   26.25
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   735
      Left            =   2880
      TabIndex        =   4
      Top             =   720
      Width           =   1695
   End
   Begin VB.Label Label4 
      BackColor       =   &H0000FFFF&
      Caption         =   "S="
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   42
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   735
      Left            =   1200
      TabIndex        =   3
      Top             =   2400
      Width           =   1455
   End
   Begin VB.Label Label3 
      BackColor       =   &H0000FFFF&
      Caption         =   "P="
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   42
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   735
      Left            =   1200
      TabIndex        =   2
      Top             =   1560
      Width           =   1455
   End
   Begin VB.Label Label2 
      BackColor       =   &H0000FFFF&
      Caption         =   "R="
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   42
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   735
      Left            =   1200
      TabIndex        =   1
      Top             =   720
      Width           =   1455
   End
   Begin VB.Label Label1 
      BackColor       =   &H00404080&
      Caption         =   "求圆的周长和面积"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   26.25
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H0000FF00&
      Height          =   615
      Left            =   120
      TabIndex        =   0
      Top             =   120
      Width           =   4455
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Command1_Click()
Dim r As Integer, p As Long, s As Long, pi
pi = 3.14
r = Text1.Text
p = 2 * pi * r
s = pi * r ^ 2
Text2.Text = p
Text3.Text = s
End Sub