aviplay.frm

VB源码,是初学者的福因.让你很快掌握VB编程

VERSION 5.00
Begin VB.Form frmMain 
   Caption         =   "利用Windows API 播放AVI文件"
   ClientHeight    =   4875
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   6225
   LinkTopic       =   "Form1"
   ScaleHeight     =   4875
   ScaleWidth      =   6225
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton cmdPause 
      Caption         =   "暂停"
      Height          =   495
      Left            =   3720
      TabIndex        =   7
      Top             =   480
      Width           =   855
   End
   Begin VB.PictureBox Picture1 
      Height          =   3495
      Left            =   2160
      ScaleHeight     =   3435
      ScaleWidth      =   3795
      TabIndex        =   6
      Top             =   1080
      Width           =   3855
   End
   Begin VB.CommandButton cmdPlay 
      Caption         =   "播放"
      Height          =   495
      Left            =   2520
      TabIndex        =   5
      Top             =   480
      Width           =   855
   End
   Begin VB.CommandButton cmdStop 
      Caption         =   "停止"
      Height          =   495
      Left            =   5040
      TabIndex        =   4
      Top             =   480
      Width           =   855
   End
   Begin VB.FileListBox File1 
      Height          =   1710
      Left            =   240
      Pattern         =   "*.avi"
      TabIndex        =   2
      Top             =   2640
      Width           =   1815
   End
   Begin VB.DirListBox Dir1 
      Height          =   1560
      Left            =   240
      TabIndex        =   1
      Top             =   960
      Width           =   1815
   End
   Begin VB.DriveListBox Drive1 
      Height          =   300
      Left            =   240
      TabIndex        =   0
      Top             =   480
      Width           =   1815
   End
   Begin VB.Label Label1 
      AutoSize        =   -1  'True
      Caption         =   "请选择.avi文件"
      Height          =   180
      Left            =   120
      TabIndex        =   3
      Top             =   120
      Width           =   1284
   End
End
Attribute VB_Name = "frmMain"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Dim i As Integer

Private Sub cmdPause_Click()
   If i Mod 2 = 0 Then
        mciSendString "pause MyAVI", vbNullString, 0, 0
   ElseIf i Mod 2 = 1 Then
        mciSendString "play MyAVI", vbNullString, 0, 0
   End If
End Sub

Private Sub cmdPlay_Click()
    Dim PathName As String, S As String, ShortPathName As String
    Dim mciCommand As String
    
    PathName = File1.Path
    If Right(PathName, 1) <> "\" Then PathName = PathName & "\"
    PathName = PathName & File1.FileName
    
    S = String(LenB(PathName), Chr(0))
    GetShortPathName PathName, S, Len(S)
    ShortPathName = Left(S, InStr(S, Chr(0)) - 1)
    
    mciSendString "close MyAVI", vbNullString, 0, 0
    
    mciCommand = "open " & ShortPathName & " alias MyAVI" & " parent " & Picture1.hWnd & " style child"
    mciSendString mciCommand, vbNullString, 0, 0
    
    With Picture1
        .ScaleMode = vbPixels
        mciCommand = "put MyAVI window at 0 0 " & _
                     .ScaleWidth & " " & .ScaleHeight
        mciSendString mciCommand, vbNullString, 0, 0
    End With
    
    mciSendString "play MyAVI", vbNullString, 0, 0
End Sub

Private Sub cmdStop_Click()
    mciSendString "close MyAVI", vbNullString, 0, 0
End Sub


Private Sub Dir1_Change()
    File1.Path = Dir1.Path
End Sub

Private Sub Drive1_Change()
    Dir1.Path = Drive1.Drive
End Sub

Private Sub Form_Unload(Cancel As Integer)
    mciSendString "close MyAVI", vbNullString, 0, 0
End Sub