📄 frmmain.frm
字号:
VERSION 5.00
Begin VB.Form frmMain
BorderStyle = 1 'Fixed Single
Caption = "文件下载测试"
ClientHeight = 6900
ClientLeft = 45
ClientTop = 330
ClientWidth = 6450
Icon = "frmMain.frx":0000
LinkTopic = "Form1"
MaxButton = 0 'False
ScaleHeight = 6900
ScaleWidth = 6450
StartUpPosition = 3 '窗口缺省
Begin VB.Frame Frame5
Height = 525
Left = 60
TabIndex = 25
Top = -30
Width = 6315
Begin VB.CommandButton cmdFetch
Caption = "开始"
Height = 315
Left = 4740
TabIndex = 27
Top = 150
Width = 1515
End
Begin VB.TextBox txtURL
Height = 285
Left = 810
TabIndex = 26
Text = "http://www.dotdotnet.com/"
Top = 150
Width = 3885
End
Begin VB.Label Label1
AutoSize = -1 'True
Caption = "地址："
Height = 180
Left = 120
TabIndex = 28
Top = 210
Width = 540
End
End
Begin VB.Frame Frame4
Caption = "结果："
Height = 3405
Left = 60
TabIndex = 23
Top = 3390
Width = 6315
Begin VB.TextBox txtOutput
BeginProperty Font
Name = "Courier New"
Size = 8.25
Charset = 0
Weight = 400
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 3015
Left = 120
Locked = -1 'True
MultiLine = -1 'True
ScrollBars = 3 'Both
TabIndex = 24
Top = 240
Width = 6075
End
End
Begin VB.Frame Frame1
Caption = "代理服务器"
Height = 2835
Left = 3480
TabIndex = 11
Top = 540
Width = 2895
Begin VB.ComboBox cmbProxyServer
Height = 300
ItemData = "frmMain.frx":1CFA
Left = 600
List = "frmMain.frx":1D0A
Style = 2 'Dropdown List
TabIndex = 17
Top = 240
Width = 2175
End
Begin VB.TextBox txtUsername
Height = 285
Left = 240
TabIndex = 16
Text = "Administrator"
Top = 1320
Width = 2535
End
Begin VB.TextBox txtPassword
Height = 285
IMEMode = 3 'DISABLE
Left = 240
PasswordChar = "*"
TabIndex = 15
Text = "MyPassword"
Top = 1920
Width = 2535
End
Begin VB.TextBox txtProxy
Alignment = 2 'Center
Height = 285
Left = 600
TabIndex = 14
Text = "10.0.0.1"
Top = 720
Width = 1215
End
Begin VB.TextBox txtProxyPort
Alignment = 2 'Center
Height = 285
Left = 2280
TabIndex = 13
Text = "80"
Top = 720
Width = 495
End
Begin VB.CheckBox chkRemoteDNS
Caption = "使用远程DNS"
Height = 255
Left = 120
TabIndex = 12
Top = 2370
Value = 1 'Checked
Width = 2535
End
Begin VB.Label Label3
AutoSize = -1 'True
BackStyle = 0 'Transparent
Caption = "类型："
Height = 180
Left = 120
TabIndex = 22
Top = 270
Width = 540
End
Begin VB.Label Label4
AutoSize = -1 'True
BackStyle = 0 'Transparent
Caption = "账号："
Height = 180
Left = 120
TabIndex = 21
Top = 1080
Width = 540
End
Begin VB.Label Label5
AutoSize = -1 'True
BackStyle = 0 'Transparent
Caption = "密码："
Height = 180
Left = 120
TabIndex = 20
Top = 1680
Width = 540
End
Begin VB.Label Label6
AutoSize = -1 'True
BackStyle = 0 'Transparent
Caption = "代理："
Height = 180
Left = 120
TabIndex = 19
Top = 750
Width = 540
End
Begin VB.Label Label7
AutoSize = -1 'True
BackStyle = 0 'Transparent
Caption = "端口："
Height = 180
Left = 1830
TabIndex = 18
Top = 750
Width = 540
End
End
Begin VB.Frame Frame2
Caption = "下载类型"
Height = 1815
Left = 60
TabIndex = 3
Top = 540
Width = 3255
Begin VB.OptionButton optDlType
Caption = "下载到文件"
Height = 255
Index = 0
Left = 240
TabIndex = 10
Top = 240
Width = 2895
End
Begin VB.PictureBox Picture1
BorderStyle = 0 'None
Height = 675
Left = 480
ScaleHeight = 45
ScaleMode = 3 'Pixel
ScaleWidth = 177
TabIndex = 6
Top = 480
Width = 2655
Begin VB.OptionButton optDlToFile
Enabled = 0 'False
Height = 255
Index = 0
Left = 0
TabIndex = 9
Top = 15
Value = -1 'True
Width = 255
End
Begin VB.TextBox txtFilename
Enabled = 0 'False
Height = 285
Left = 240
TabIndex = 8
Text = "C:\myfile.ext"
Top = 0
Width = 2415
End
Begin VB.OptionButton optDlToFile
Caption = "使用暂时的文件"
Enabled = 0 'False
Height = 315
Index = 1
Left = 0
TabIndex = 7
Top = 360
Width = 2655
End
End
Begin VB.OptionButton optDlType
Caption = "下载到缓冲器"
Height = 255
Index = 1
Left = 240
TabIndex = 5
Top = 1200
Width = 2895
End
Begin VB.OptionButton optDlType
Caption = "下载到下面文本框"
Height = 255
Index = 2
Left = 240
TabIndex = 4
Top = 1440
Value = -1 'True
Width = 2895
End
End
Begin VB.Frame Frame3
Caption = "状态"
Height = 975
Left = 60
TabIndex = 0
Top = 2400
Width = 3255
Begin VB.PictureBox picProgress
AutoRedraw = -1 'True
ForeColor = &H8000000D&
Height = 255
Left = 120
ScaleHeight = 1
ScaleMode = 0 'User
ScaleWidth = 100
TabIndex = 1
Top = 600
Width = 3015
End
Begin VB.Label lblDownloadStatus
BackStyle = 0 'Transparent
Caption = "Downloaded x bytes from y bytes"
Height = 255
Left = 120
TabIndex = 2
Top = 240
Width = 3015
End
End
End
Attribute VB_Name = "frmMain"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Dim WithEvents RemoteFile As DataConnection
Attribute RemoteFile.VB_VarHelpID = -1
Dim DlType As DOWNLOAD_TYPE
Private Sub Form_Load()
'Initialize WinSock... (this*must* be done)
StartWinsock vbNullString
'Create a new DataConnection class
Set RemoteFile = New DataConnection
'Set default proxy to 'No Proxy'
cmbProxyServer.ListIndex = 0
'Set default download type to Stream Buffer
optDlType_Click 2
End Sub
Private Sub Form_Unload(Cancel As Integer)
'Clean up...
Set RemoteFile = Nothing
EndWinsock
End Sub
Private Sub optDlType_Click(Index As Integer)
optDlToFile(0).Enabled = (Index = 0)
optDlToFile(1).Enabled = (Index = 0)
txtFilename.Enabled = (Index = 0)
DlType = Index
End Sub
Private Sub cmbProxyServer_Click()
chkRemoteDNS.Enabled = (cmbProxyServer.ListIndex = 2 Or cmbProxyServer.ListIndex = 3)
txtPassword.Enabled = (cmbProxyServer.ListIndex = 3)
txtUsername.Enabled = chkRemoteDNS.Enabled
txtProxy.Enabled = (cmbProxyServer.ListIndex <> 0)
txtProxyPort.Enabled = (cmbProxyServer.ListIndex <> 0)
End Sub
Private Sub cmdFetch_Click()
txtOutput.Text = ""
With RemoteFile
.DownloadType = DlType
.Filename = txtFilename.Text
.UseTempFile = optDlToFile(1).Value
.ProxyType = cmbProxyServer.ListIndex
.ProxyHostname = txtProxy.Text
.ProxyPort = Val(txtProxyPort.Text)
.ProxyUsername = txtUsername.Text
.ProxyPassword = txtPassword.Text
.ProxyUseRemoteDNS = (chkRemoteDNS.Value = vbChecked)
.AutoRedirect = True
.AllowCache = False
.UseResume = False
picProgress.Cls
.Disconnect
.MaxDownload = 1972224 '40712
.FetchURLString txtURL.Text
Debug.Print CStr(.SocketHandle)
End With
End Sub
Private Sub RemoteFile_BytesReceived(lByteCount As Long, ID As Long)
'If the script knows how many bytes that it has to receive then
If RemoteFile.DownloadLength > 0 Then
'... draw a progress bar
lblDownloadStatus.Caption = "Downloaded " + CStr(lByteCount) + " bytes from " + CStr(RemoteFile.DownloadLength) + "."
picProgress.ScaleWidth = RemoteFile.DownloadLength
picProgress.Line (0, 0)-(lByteCount, 1), , BF
'Or else, simply show how many bytes we have received
Else
lblDownloadStatus.Caption = "Downloaded " + CStr(lByteCount) + " bytes."
End If
End Sub
Private Sub RemoteFile_Connected(ID As Long)
'Successfully connected to the remote host
Debug.Print "Connected"
End Sub
Private Sub RemoteFile_Disconnected(ID As Long)
Debug.Print "Disconnected"
'If we have downloaded everything to a buffer...
If RemoteFile.DownloadType = dtToBuffer Then
'... then show it
txtOutput.Text = RemoteFile.GetBufferAsString
RemoteFile.ClearBuffer
End If
'Tell the user the download is complete
If RemoteFile.DownloadType = dtToFile And RemoteFile.UseTempFile Then
MsgBox "Download completed!" + vbCrLf + "Result saved to " + RemoteFile.Filename, vbInformation
Else
MsgBox "Download completed!", vbInformation
End If
End Sub
Private Sub RemoteFile_DownloadFailed(Why As DOWNLOAD_FAILURE, ID As Long)
'Uhoh... the download failed :(
Debug.Print "Download Failed"
MsgBox "The download failed... Error code " + CStr(Why), vbExclamation
End Sub
Private Sub RemoteFile_StreamBytes(lByteCount As Long, bBytes() As Byte, ID As Long)
'Show the received bytes
txtOutput.Text = txtOutput.Text + StrConv(bBytes, vbUnicode)
End Sub
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