practice9_6.frm

来自「深圳大学的vb上机与教学的课件」· FRM 代码 · 共 70 行

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   3195
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4680
   LinkTopic       =   "Form1"
   ScaleHeight     =   3195
   ScaleWidth      =   4680
   StartUpPosition =   2  '屏幕中心
   Begin VB.Timer Timer1 
      Interval        =   1000
      Left            =   4200
      Top             =   0
   End
   Begin VB.CommandButton Command1 
      Caption         =   "停止"
      Height          =   495
      Left            =   3720
      TabIndex        =   0
      Top             =   2640
      Width           =   855
   End
   Begin VB.Shape Shape1 
      FillColor       =   &H000000FF&
      FillStyle       =   0  'Solid
      Height          =   735
      Left            =   1440
      Shape           =   3  'Circle
      Top             =   720
      Width           =   735
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Dim f As Integer

Private Sub Command1_Click()
  Timer1.Enabled = False
End Sub



Private Sub Form_Load()
  f = 0
End Sub

Private Sub Timer1_Timer()
  If f = 0 Then
    If Shape1.Top + Shape1.Height > Form1.ScaleHeight Then
      f = 1
      Shape1.Top = Shape1.Top - 100
    Else
      Shape1.Top = Shape1.Top + 100
    End If
  Else
    If Shape1.Top < 0 Then
      f = 0
      Shape1.Top = Shape1.Top + 100
    Else
      Shape1.Top = Shape1.Top - 100
    End If
  End If
End Sub