001.frm

一个用vb和usb通信的一个实例,大家可以下载看看!

VERSION 5.00
Begin VB.Form frmAbout1 
   BackColor       =   &H00FF8080&
   BorderStyle     =   3  'Fixed Dialog
   Caption         =   "编者信息"
   ClientHeight    =   4410
   ClientLeft      =   3960
   ClientTop       =   4230
   ClientWidth     =   6075
   ClipControls    =   0   'False
   Icon            =   "001.frx":0000
   LinkTopic       =   "Form2"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   3043.861
   ScaleMode       =   0  'User
   ScaleWidth      =   5704.739
   ShowInTaskbar   =   0   'False
   Begin VB.PictureBox Picture2 
      Height          =   4455
      Left            =   0
      Picture         =   "001.frx":0442
      ScaleHeight     =   4395
      ScaleWidth      =   6075
      TabIndex        =   3
      Top             =   -720
      Width           =   6135
   End
   Begin VB.PictureBox Picture1 
      Height          =   4095
      Left            =   0
      Picture         =   "001.frx":77E2
      ScaleHeight     =   4035
      ScaleWidth      =   6075
      TabIndex        =   2
      Top             =   -360
      Width           =   6135
   End
   Begin VB.Timer Timer2 
      Interval        =   1
      Left            =   1080
      Top             =   3960
   End
   Begin VB.CommandButton cmdOK 
      BackColor       =   &H00FFC0C0&
      Cancel          =   -1  'True
      Caption         =   "确  定"
      Default         =   -1  'True
      Height          =   345
      Left            =   2040
      Style           =   1  'Graphical
      TabIndex        =   0
      Top             =   3960
      Width           =   1500
   End
   Begin VB.Label lblDescription 
      BackColor       =   &H00FF8080&
      Caption         =   $"001.frx":E4D0
      ForeColor       =   &H0000FFFF&
      Height          =   810
      Left            =   120
      TabIndex        =   1
      Top             =   2520
      Width           =   5085
   End
   Begin VB.Line Line1 
      BorderColor     =   &H00808080&
      BorderStyle     =   6  'Inside Solid
      Index           =   1
      X1              =   112.686
      X2              =   5337.57
      Y1              =   2567.611
      Y2              =   2567.611
   End
   Begin VB.Line Line1 
      BorderColor     =   &H00FFFFFF&
      BorderWidth     =   2
      Index           =   0
      X1              =   0
      X2              =   5210.798
      Y1              =   2567.611
      Y2              =   2567.611
   End
End
Attribute VB_Name = "frmAbout1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Const pSize = 10

' 注册表关键字安全选项...
Const READ_CONTROL = &H20000
Const KEY_QUERY_VALUE = &H1
Const KEY_SET_VALUE = &H2
Const KEY_CREATE_SUB_KEY = &H4
Const KEY_ENUMERATE_SUB_KEYS = &H8
Const KEY_NOTIFY = &H10
Const KEY_CREATE_LINK = &H20
Const KEY_ALL_ACCESS = KEY_QUERY_VALUE + KEY_SET_VALUE + _
                       KEY_CREATE_SUB_KEY + KEY_ENUMERATE_SUB_KEYS + _
                       KEY_NOTIFY + KEY_CREATE_LINK + READ_CONTROL
                     
' 注册表关键字 ROOT 类型...
Const HKEY_LOCAL_MACHINE = &H80000002
Const ERROR_SUCCESS = 0
Const REG_SZ = 1                         ' 独立的空的终结字符串
Const REG_DWORD = 4                      ' 32位数字

Const gREGKEYSYSINFOLOC = "SOFTWARE\Microsoft\Shared Tools Location"
Const gREGVALSYSINFOLOC = "MSINFO"
Const gREGKEYSYSINFO = "SOFTWARE\Microsoft\Shared Tools\MSINFO"
Const gREGVALSYSINFO = "PATH"

Private Declare Function RegOpenKeyEx Lib "advapi32" Alias "RegOpenKeyExA" (ByVal hKey As Long, ByVal lpSubKey As String, ByVal ulOptions As Long, ByVal samDesired As Long, ByRef phkResult As Long) As Long
Private Declare Function RegQueryValueEx Lib "advapi32" Alias "RegQueryValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal lpReserved As Long, ByRef lpType As Long, ByVal lpData As String, ByRef lpcbData As Long) As Long
Private Declare Function RegCloseKey Lib "advapi32" (ByVal hKey As Long) As Long


Private Sub cmdSysInfo_Click()
  Call StartSysInfo
End Sub

Private Sub cmdOK_Click()

  Unload Me
End Sub

Public Sub StartSysInfo()
    On Error GoTo SysInfoErr
  
    Dim rc As Long
    Dim SysInfoPath As String
    
    ' 试图从注册表中获得系统信息程序的路径及名称...
    If GetKeyValue(HKEY_LOCAL_MACHINE, gREGKEYSYSINFO, gREGVALSYSINFO, SysInfoPath) Then
    ' 试图仅从注册表中获得系统信息程序的路径...
    ElseIf GetKeyValue(HKEY_LOCAL_MACHINE, gREGKEYSYSINFOLOC, gREGVALSYSINFOLOC, SysInfoPath) Then
        ' 已知32位文件版本的有效位置
        If (Dir(SysInfoPath & "\MSINFO32.EXE") <> "") Then
            SysInfoPath = SysInfoPath & "\MSINFO32.EXE"
            
        ' 错误 - 文件不能被找到...
        Else
            GoTo SysInfoErr
        End If
    ' 错误 - 注册表相应条目不能被找到...
    Else
        GoTo SysInfoErr
    End If
    
    Call Shell(SysInfoPath, vbNormalFocus)
    
    Exit Sub
SysInfoErr:
    MsgBox "此时系统信息不可用", vbOKOnly
End Sub

Public Function GetKeyValue(KeyRoot As Long, KeyName As String, SubKeyRef As String, ByRef KeyVal As String) As Boolean
    Dim i As Long                                           ' 循环计数器
    Dim rc As Long                                          ' 返回代码
    Dim hKey As Long                                        ' 打开的注册表关键字句柄
    Dim hDepth As Long                                      '
    Dim KeyValType As Long                                  ' 注册表关键字数据类型
    Dim tmpVal As String                                    ' 注册表关键字值的临时存储器
    Dim KeyValSize As Long                                  ' 注册表关键自变量的尺寸
    '------------------------------------------------------------
    ' 打开 {HKEY_LOCAL_MACHINE...} 下的 RegKey
    '------------------------------------------------------------
    rc = RegOpenKeyEx(KeyRoot, KeyName, 0, KEY_ALL_ACCESS, hKey) ' 打开注册表关键字
    
    If (rc <> ERROR_SUCCESS) Then GoTo GetKeyError          ' 处理错误...
    
    tmpVal = String$(1024, 0)                             ' 分配变量空间
    KeyValSize = 1024                                       ' 标记变量尺寸
    
    '------------------------------------------------------------
    ' 检索注册表关键字的值...
    '------------------------------------------------------------
    rc = RegQueryValueEx(hKey, SubKeyRef, 0, _
                         KeyValType, tmpVal, KeyValSize)    ' 获得/创建关键字值
                        
    If (rc <> ERROR_SUCCESS) Then GoTo GetKeyError          ' 处理错误
    
    If (Asc(Mid(tmpVal, KeyValSize, 1)) = 0) Then           ' Win95 外接程序空终结字符串...
        tmpVal = Left(tmpVal, KeyValSize - 1)               ' Null 被找到,从字符串中分离出来
    Else                                                    ' WinNT 没有空终结字符串...
        tmpVal = Left(tmpVal, KeyValSize)                   ' Null 没有被找到, 分离字符串
    End If
    '------------------------------------------------------------
    ' 决定转换的关键字的值类型...
    '------------------------------------------------------------
    Select Case KeyValType                                  ' 搜索数据类型...
    Case REG_SZ                                             ' 字符串注册关键字数据类型
        KeyVal = tmpVal                                     ' 复制字符串的值
    Case REG_DWORD                                          ' 四字节的注册表关键字数据类型
        For i = Len(tmpVal) To 1 Step -1                    ' 将每位进行转换
            KeyVal = KeyVal + Hex(Asc(Mid(tmpVal, i, 1)))   ' 生成值字符。 By Char。
        Next
        KeyVal = Format$("&h" + KeyVal)                     ' 转换四字节的字符为字符串
    End Select
    
    GetKeyValue = True                                      ' 返回成功
    rc = RegCloseKey(hKey)                                  ' 关闭注册表关键字
    Exit Function                                           ' 退出
    
GetKeyError:      ' 错误发生后将其清除...
    KeyVal = ""                                             ' 设置返回值到空字符串
    GetKeyValue = False                                     ' 返回失败
    rc = RegCloseKey(hKey)                                  ' 关闭注册表关键字
End Function

Private Sub Form_Load()
 
  Dim speed As Integer
  speed = 1
 Const pSize = 10

Dim Orientation As Integer
Dim DelayTime As Long

End Sub

Private Sub Image2_Click()

End Sub


Private Sub ToJuan(ByVal TheSpeed As Integer)
    Dim CurHeight As Integer
    Dim CurWidth As Integer
    Dim DelayTime As Long
    CurWidth = 0
    While CurWidth < Picture1.ScaleWidth - pSize
        Picture2.PaintPicture Picture2.Picture, CurWidth + pSize, 0, _
            pSize, Picture2.ScaleHeight, CurWidth, 0, _
            pSize, Picture1.ScaleHeight, vbSrcCopy
        Picture2.PaintPicture Picture1.Picture, CurWidth, 0, _
            pSize, Picture2.ScaleHeight, CurWidth, 0, _
            pSize, Picture1.ScaleHeight, vbSrcCopy
        CurWidth = CurWidth + pSize
        DoEvents
       For DelayTime = 0 To 1000000
                Next
    Wend
    Picture2.PaintPicture Picture1.Picture, CurWidth, 0, _
            pSize, Picture2.ScaleHeight, CurWidth, 0, _
            pSize, Picture1.ScaleHeight, vbSrcCopy
End Sub

Private Sub Timer2_Timer()
Picture2.Cls
    Picture2.Refresh
    Dim speed As Integer
    speed = 2
     ToJuan speed
     
End Sub