form1.frm

vb精彩编程希望大家有用

VERSION 5.00
Object = "{F9043C88-F6F2-101A-A3C9-08002B2F49FB}#1.2#0"; "COMDLG32.OCX"
Begin VB.Form Form1 
   BorderStyle     =   1  'Fixed Single
   Caption         =   "主窗体"
   ClientHeight    =   2115
   ClientLeft      =   45
   ClientTop       =   330
   ClientWidth     =   4725
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   2115
   ScaleWidth      =   4725
   StartUpPosition =   3  '窗口缺省
   Begin VB.Timer Timer1 
      Enabled         =   0   'False
      Interval        =   100
      Left            =   3360
      Top             =   600
   End
   Begin VB.HScrollBar HScroll2 
      Height          =   255
      Left            =   960
      TabIndex        =   5
      Top             =   1560
      Width           =   3495
   End
   Begin VB.HScrollBar HScroll1 
      Height          =   255
      Left            =   960
      TabIndex        =   4
      Top             =   1200
      Width           =   3495
   End
   Begin MSComDlg.CommonDialog CommonDialog1 
      Left            =   3960
      Top             =   600
      _ExtentX        =   847
      _ExtentY        =   847
      _Version        =   393216
   End
   Begin VB.TextBox Text1 
      Enabled         =   0   'False
      Height          =   375
      Left            =   1080
      TabIndex        =   3
      Top             =   120
      Width           =   3375
   End
   Begin VB.CommandButton Command1 
      Caption         =   "打开..."
      Height          =   375
      Left            =   120
      TabIndex        =   2
      Top             =   120
      Width           =   975
   End
   Begin VB.CommandButton Command3 
      Caption         =   "停止"
      Height          =   375
      Left            =   1320
      TabIndex        =   1
      Top             =   600
      Width           =   975
   End
   Begin VB.CommandButton Command2 
      Caption         =   "播放"
      Height          =   375
      Left            =   120
      TabIndex        =   0
      Top             =   600
      Width           =   975
   End
   Begin VB.Label Label2 
      AutoSize        =   -1  'True
      Caption         =   "结束位置："
      Height          =   180
      Left            =   120
      TabIndex        =   7
      Top             =   1597
      Width           =   900
   End
   Begin VB.Label Label1 
      AutoSize        =   -1  'True
      Caption         =   "开始位置："
      Height          =   180
      Left            =   120
      TabIndex        =   6
      Top             =   1237
      Width           =   900
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Dim filename As String
Dim errStr As String * 200
Dim waveForm As Form2
Const MAX_SCROLL_VALUE = 1000
Private Declare Function ShellExecute Lib "shell32.dll" Alias "ShellExecuteA" _
    (ByVal hwnd As Long, ByVal lpOperation As String, ByVal lpFile As String, _
    ByVal lpParameters As String, ByVal lpDirectory As String, _
    ByVal nShowCmd As Long) As Long
Private Sub Form_Load()
   Module1.fFileLoaded = False
   CommonDialog1.filename = "*.wav"
   CommonDialog1.DefaultExt = "wav"
   Set waveForm = New Form2
   waveForm.Move Me.Left + Me.Width, Me.Top, Me.Width, Me.Height
   waveForm.Show 0, Me
   HScroll1.Max = MAX_SCROLL_VALUE
   HScroll2.Max = MAX_SCROLL_VALUE
   HScroll2.Value = MAX_SCROLL_VALUE
End Sub
Private Sub Command1_Click()
   CommonDialog1.ShowOpen
   filename = CommonDialog1.filename
   Text1.Text = filename
   LoadFile filename
   Module1.drawFrom = 0
   Module1.drawTo = Module1.numSamples
   HScroll1.Value = 0
   HScroll2.Value = MAX_SCROLL_VALUE
   waveForm.DrawWaves
End Sub
Private Sub Command2_Click()
   If (Module1.fPlaying = False) Then
      Play -1
   End If
End Sub
Private Sub Command3_Click()
   StopPlay
End Sub
Private Sub HScroll1_Change()
   If HScroll1.Value >= HScroll2.Value Then
      HScroll1.Value = HScroll2.Value - 1
      End If
   SetPlayRange
End Sub
Private Sub HScroll2_Change()
   If HScroll2.Value <= HScroll1.Value Then
      HScroll2.Value = HScroll1.Value + 1
      End If
   SetPlayRange
End Sub
Private Sub SetPlayRange()
   Module1.drawFrom = CLng(Module1.numSamples * (HScroll1.Value / MAX_SCROLL_VALUE))
   Module1.drawTo = CLng(Module1.numSamples * (HScroll2.Value / MAX_SCROLL_VALUE))
   waveForm.DrawWaves
End Sub
Private Sub Timer1_Timer()
   If Module1.fPlaying = False Then
      Module1.CloseWaveOut
      Timer1.Enabled = False
   End If
End Sub