form1.frm

vc中的DLL是个好东东

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "VB3"
   ClientHeight    =   2055
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   6255
   LinkTopic       =   "Form1"
   ScaleHeight     =   2055
   ScaleWidth      =   6255
   StartUpPosition =   3  'Windows Default
   Begin VB.TextBox Text1 
      Height          =   285
      Left            =   2355
      TabIndex        =   1
      Text            =   "Text1"
      Top             =   435
      Width           =   3660
   End
   Begin VB.CommandButton Command1 
      Caption         =   "GetCpuSpeed()"
      Height          =   360
      Left            =   255
      TabIndex        =   0
      Top             =   405
      Width           =   1950
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Declare Function CreateDll3 Lib "DLL3.dll" () As Long
Private Declare Sub DestroyDll3 Lib "DLL3.dll" (ByVal objptr As Long)
Private Declare Function GetCpuSpeedDll3 Lib "DLL3.dll" (ByVal objptr As Long) As Integer
Private Declare Sub InitCommonControls Lib "comctl32.dll" ()

Private Sub Form_Initialize()

    InitCommonControls
    ChDir App.Path

End Sub

Private Sub Command1_Click()

    Dim nSpeed As Integer
    Dim s As String
    Dim objptr As Long
    
    Screen.MousePointer = vbHourglass
    objptr = CreateDll3()
    nSpeed = GetCpuSpeedDll3(objptr)
    DestroyDll3 (objptr)
    Screen.MousePointer = 0
    
    s = nSpeed
    
    Form1.Text1.Text = "GetCpuSpeedDll3() returned " + s

End Sub

Private Sub Form_Load()

    Form1.Text1.Text = ""
    
End Sub