12.1.frm

vb编程+从基础到实践光盘代码

VERSION 5.00
Begin VB.Form Form1 
   BorderStyle     =   1  'Fixed Single
   Caption         =   "字幕闪烁"
   ClientHeight    =   3555
   ClientLeft      =   45
   ClientTop       =   435
   ClientWidth     =   4935
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   3555
   ScaleWidth      =   4935
   StartUpPosition =   3  '窗口缺省
   Begin VB.Timer Timer1 
      Enabled         =   0   'False
      Interval        =   500
      Left            =   600
      Top             =   2760
   End
   Begin VB.CommandButton Command1 
      Caption         =   "开始"
      Height          =   495
      Left            =   3000
      TabIndex        =   0
      Top             =   2400
      Width           =   1215
   End
   Begin VB.Label Label1 
      AutoSize        =   -1  'True
      Caption         =   "祝你考试成功"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   21.75
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H000000FF&
      Height          =   435
      Left            =   1080
      TabIndex        =   1
      Top             =   840
      Width           =   2700
   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()
    If Command1.Caption = "开始" Then
        Timer1.Enabled = True                  '单击开始后计时器可用
        Command1.Caption = "停止"
    Else
        Timer1.Enabled = False                 '单击停止后计时器不可用
        Command1.Caption = "开始"
    End If
End Sub

Private Sub Timer1_Timer()
    Dim R As Byte, G As Byte, B As Byte
    Randomize
    R = Int(Rnd * 255) + 1                     '随机产生RGB颜色值
    G = Int(Rnd * 255) + 1
    B = Int(Rnd * 255) + 1
    Label1.ForeColor = RGB(R, G, B)            '改变字体颜色实现文字闪烁
End Sub